Opening and closing mechanism and unmanned aerial vehicle

Abstract

The application discloses an opening and closing mechanism and a UAV, and belongs to the technical field of the UAV, and comprises a hinge fixed part, a hinge movable part and a sliding block, wherein the hinge fixed part is provided with a sliding groove; the hinge movable part is connected with an adapter, and the adapter is provided with a profiling part on the radial outer side; the sliding block is arranged in the sliding groove in a radial sliding mode, and the adapter is rotationally connected with the sliding block; in the closed position, the profiling part blocks the sliding groove, and in the opened position, the outer side of the sliding block has a movable space for the rotation of the profiling part. Through the arrangement of the sliding block, the hinge movable part can be opened in the mode of first sliding and then rotating relative to the hinge fixed part, thereby avoiding the situation that the opening and closing mechanism cannot be opened after the profiling part is arranged, the sliding groove can be blocked by the profiling part, the integrity of the power nacelle is ensured, and the aerodynamic performance of the UAV is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of unmanned aerial vehicles, in particular to an opening and closing mechanism and unmanned aerial vehicle. BACKGROUND

[0002] In the technical field of unmanned aerial vehicles, the power nacelle is an important component for carrying the power system of the unmanned aerial vehicle, and its structural design and stability are directly related to the flight performance and safety of the unmanned aerial vehicle. In particular, in the design of the opening and closing mechanism of the power nacelle, many technical challenges are faced.

[0003] The traditional opening and closing mechanism of the power nacelle usually uses a hinge as a connecting piece to realize the opening and closing function of the power nacelle. However, the outer section of the power nacelle is usually equipped with brushless motors, which will generate high-speed vibration in the working state. The hinge that works in a vibrating environment for a long time will have a greatly accelerated wear rate, resulting in a gradually increasing gap between the hinges. The increase of the gap not only reduces the connection stability of the hinge, but also may cause problems such as loosening or abnormal noise of the power nacelle, further accelerating the wear and damage of the hinge.

[0004] In addition, the traditional hinge design needs to directly bear the weight of the power nacelle and various external forces in the opening and closing process, which results in a large stress concentration on the hinge, increasing the risk of damage. In particular, in the case of long-time flight of the unmanned aerial vehicle or frequent opening and closing of the power nacelle, the wear problem of the hinge is particularly prominent.

[0005] More seriously, due to the irregularity of the appearance of the power nacelle, the existing hinge design needs to expose part of the structural components during installation, which not only affects the overall aesthetics of the power nacelle, but also may adversely affect the aerodynamic performance of the unmanned aerial vehicle.

[0006] In summary, the existing design of the opening and closing mechanism of the power nacelle has many deficiencies, especially in the aspect of aerodynamic performance. SUMMARY

[0007] The purpose of the present application is to provide an opening and closing mechanism and unmanned aerial vehicle to solve the problems existing in the prior art. By providing a sliding block, the hinge movable piece can be opened in a sliding and rotating manner relative to the hinge fixed piece, thereby avoiding the situation that the opening and closing mechanism cannot be opened after the profiled piece is set. The profiled piece can be used to block the sliding slot, ensuring the integrity of the power nacelle and meeting the aerodynamic performance of the unmanned aerial vehicle.

[0008] To achieve the above purpose, the present application provides the following solutions:

[0009] The application provides an opening and closing mechanism, which comprises a hinge fixed part, a hinge movable part and a sliding block, the hinge fixed part is provided with a sliding groove, the hinge movable part is connected with an adapter, the adapter is provided with a profiling part on the radial outside, the sliding block is arranged in the sliding groove in the radial direction, and the adapter is rotationally connected with the sliding block; in the closed position, the profiling part blocks the sliding groove, and in the open position, the outside of the sliding block has a movable space for the rotation of the profiling part.

[0010] In an embodiment, the two sides of the sliding direction of the sliding groove are provided with U-shaped limiting grooves, the opening directions of the U-shaped limiting grooves are oppositely arranged, and the two sides of the sliding direction of the sliding block are provided with limiting parts, which are slidingly arranged in the U-shaped limiting grooves.

[0011] In an embodiment, the application further comprises a limiting part, which covers the U-shaped limiting groove, and the limiting part is used for limiting the axial movement of the limiting part.

[0012] In an embodiment, the application further comprises a rotating shaft, the sliding block comprises a body and two arms connected to the body, the adapter is located between the two arms, the rotating shaft is arranged on each of the two arms, one end of the rotating shaft is connected to the arm, and the other end of the rotating shaft is inserted into the mounting hole of the adapter.

[0013] In an embodiment, the body is provided with a first hollow hole, the hinge fixed part is provided with a second hollow hole, and the hinge movable part is provided with a third hollow hole.

[0014] In an embodiment, the hinge fixed part is provided with a clamping groove, the hinge movable part is connected with a hook, the opening length direction of the hook is the same as the sliding direction of the sliding block, the opening width of the hook is greater than or equal to the thickness of the clamping groove position, in the closed position, the hook is clamped in the clamping groove position, and in the open position, the hook can penetrate the sliding groove in the axial direction.

[0015] In an embodiment, the application further comprises a spring and an adjusting bolt, the hook is provided with a baffle, one end of the spring abuts against the baffle, the other end of the spring abuts against the hinge movable part, the tail end of the adjusting bolt penetrates the hinge movable part and is connected to the hook, and the head end of the adjusting bolt is located on the side of the hinge movable part away from the hinge fixed part.

[0016] In an embodiment, the application further comprises a wear-resistant pad, which is located on the side of the hinge movable part facing the hinge fixed part, and the wear-resistant pad is installed near the clamping groove.

[0017] In an embodiment, the card slots are arranged in a matrix on the hinge fixing member, the axial extension directions of the card slots are parallel to each other, and the radial extension directions of the card slots are parallel to each other.

[0018] The application also provides a UAV, comprising a fuselage, a fixed cabin, a movable cabin, and an opening and closing mechanism as described above, the fixed cabin is connected to the fuselage, the hinge fixing member is connected to the fixed cabin, and the hinge movable cabin is connected to the movable cabin.

[0019] The application has the following technical effects relative to the prior art:

[0020] The sliding block is connected to the hinge fixing member in sliding mode, and the sliding block is connected to the adapter of the hinge movable member in rotating mode, so that the hinge movable member can slide relative to the hinge fixing member and rotate relative to the hinge fixing member, and then the hinge movable member can be opened in the mode of sliding first and then rotating, and the activity space of the profiled member rotating is formed after sliding, thereby avoiding the situation that the opening and closing mechanism cannot be opened in rotating mode after the profiled member is arranged, and the sliding slot can be blocked by the profiled member in the closed position, the integrity of the power pod is ensured, and the aerodynamic performance of the UAV is met.

[0021] The other technical solutions of the application can also achieve the following technical effects:

[0022] The cooperation of the card slot and the hook can maintain the stability between the hinge fixing member and the hinge movable member in the closed position, so that the rotating connection between the sliding block and the adapter is no longer directly stressed, thereby reducing wear and tear and improving the stability and safety of the opening and closing mechanism.

[0023] The spring and the adjusting bolt are arranged, the position of the hook can be adjusted by the screwing position of the adjusting bolt, the hook and the hinge fixing member are better matched, the hook is kept in a stable position by the spring abutting against the hook, and the influence of vibration is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Figure 1 It is a schematic diagram of the power cabin in the closed state in the embodiment of the application.

[0026] Figure 2 It is a schematic diagram of the power cabin in the open state in the embodiment of the application.

[0027] Figure 3 This is a schematic diagram of the closed state of the opening and closing mechanism in an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the sliding open state of the opening and closing mechanism in an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the opening and closing mechanism in the rotating open state in an embodiment of the present invention;

[0030] Figure 6 This is a front view of the opening and closing mechanism (hinge moving part direction) in an embodiment of the present invention;

[0031] Figure 7 for Figure 6 Sectional view of AA;

[0032] Figure 8 for Figure 6 BB section view;

[0033] Figure 9 for Figure 6 CC section view;

[0034] Figure 10 This is a side view of the opening and closing mechanism in an embodiment of the present invention;

[0035] Figure 11 for Figure 10 DD section view;

[0036] Among them, 1. Fixed compartment; 2. Movable compartment; 3. Opening and closing mechanism;

[0037] 31. Hinge fixing component; 32. Hinge moving component; 33. Slider; 34. Hook; 35. Shaft; 36. Spring; 37. Adjusting bolt; 38. Limiting component; 39. Wear-resistant pad;

[0038] 311. Slide groove; 3111. U-shaped limiting groove; 312. Slot; 313. Second hollow hole;

[0039] 321. Adapter; 322. Profile part; 323. Third hollow hole;

[0040] 331. Limiting part; 332. First hollow hole. Detailed Implementation

[0041] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0042] The purpose of the present application is to provide an opening and closing mechanism and a UAV to solve the problems existing in the prior art. By providing a sliding block, the hinge movable part can be opened by sliding first and then rotating relative to the hinge fixed part, thereby avoiding the situation that the opening and closing mechanism cannot be opened after the profiling part is provided. The profiling part can block the sliding groove, ensuring the integrity of the power nacelle and meeting the aerodynamic performance of the UAV.

[0043] To make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0044] As shown in Figures 3-11 The present application provides an opening and closing mechanism, which comprises a hinge fixed part 31, a hinge movable part 32 and a sliding block 33. The specific structure of the hinge fixed part 31 and the hinge movable part 32 can be reasonably set according to the application scenario, such as being set into a circular, rectangular, elliptical or irregular shape, etc. The sliding block 33 is used as a connecting structure, so that the hinge fixed part 31 and the hinge movable part 32 can not only slide relative to each other, but also rotate relative to each other, thereby realizing the opening and closing action. It should be noted that the radial direction mentioned herein refers to Figure 6 the direction parallel to the paper surface, and the axial direction mentioned herein refers to Figure 6The hinge fixed part 31 is provided with a sliding groove 311, the hinge movable part 32 is connected with an adapter 321, the radial outer side of the adapter 321 is provided with a profiling piece 322, the adapter 321 and the profiling piece 322 are connected with each other or directly integrated, when the adapter 321 acts, the profiling piece 322 can act together with it. The sliding block 33 is radially slidably arranged in the sliding groove 311, the adapter 321 is rotationally connected with the sliding block 33, thereby, through the arrangement of the sliding block 33, the hinge movable part 32 and the hinge fixed part 31 can relatively rotate and slide. In the closed position of the hinge fixed part 31 and the hinge movable part 32, the profiling piece 322 can block the sliding groove 311, the surface type of the profiling piece 322 is designed according to the shape of the installed structure, so as to avoid the change of the shape caused by the arrangement of the connecting structure, especially when applied to the power nacelle of the unmanned aerial vehicle, the integrity of the power nacelle can be maintained through the profiling piece 322. In the opening position of the hinge fixed part 31 and the hinge movable part 32, the outer side of the sliding block 33 has a movable space for the rotation of the profiling piece 322, thereby, compared with the ordinary hinge structure, through the addition of the sliding block 33, the movement space of the profiling piece 322 can be provided, and then the profiling piece 322 can be arranged.

[0045] The sliding block 33 is slidably connected with the hinge fixed part 31, and the sliding block 33 is rotationally connected with the adapter 321 of the hinge movable part 32, so that the hinge movable part 32 can slide relative to the hinge fixed part 31 and rotate relative to the hinge fixed part 31, and then the hinge movable part 32 can be opened in the mode of sliding first and then rotating, and the movable space for the rotation of the profiling piece 322 is formed after sliding, thereby avoiding the situation that the opening and closing mechanism 3 cannot be rotated and opened after the profiling piece 322 is arranged, in the closed position, the sliding groove 311 can be blocked by the profiling piece 322, the integrity of the power nacelle is ensured, and the aerodynamic performance of the unmanned aerial vehicle is met.

[0046] As shown in Figure 5 , the profiling piece 322 and the sliding block 33 have a maximum angle limit, when the profiling piece 322 is turned to a certain extent, it will be constrained by the sliding block 33 and cannot continue to turn, for example, the maximum angle of upward rotation can be set to 95 degrees.

[0047] In an embodiment, as shown in Figure 11 , the sliding direction of the sliding groove 311 has two U-shaped limiting grooves 3111, and the opening directions of the two U-shaped limiting grooves 3111 are oppositely arranged. The sliding direction of the sliding block 33 is provided with a limiting part 331, and the limiting part 331 is slidably arranged in the U-shaped limiting groove 3111. Thus, the two arms of the U-shaped limiting groove 3111 limit the movement distance of the limiting part 331, and then the movement distance of the sliding block 33 is limited, so as to avoid the sliding block 33 from sliding out of the sliding groove 311.

[0048] In an embodiment, as shown in Figure 5 , further comprising a limiting member 38, when installed, the sliding block 33 enters the sliding groove 311 in the axial direction, the limiting member 38 covers at least the U-shaped limiting groove 3111, and the axial movement of the limiting portion 331 is limited by the limiting member 38. Finally, the sliding block 33 is axially limited by the limiting member 38 and radially limited by the U-shaped limiting groove 3111, so that the sliding block 33 has a certain activity interval relative to the hinge fixing member 31 in the radial direction, and is limited in the axial direction and cannot move.

[0049] In an embodiment, further comprising a rotating shaft 35, the sliding block 33 comprises a body and two arms connected to the body, the adapter 321 is located between the two arms, and the rotating shaft 35 penetrates the two arms and is connected to the adapter 321. At this time, one rotating shaft 35 is provided. Alternatively, the rotating shaft 35 is provided on each of the two arms, at this time, the rotating shaft 35 is coaxially provided with two sections, one end of each section of the rotating shaft 35 is connected to the arm, and the other end of each section of the rotating shaft 35 is inserted into the mounting hole of the adapter 321. The segmented rotating shaft 35 can be installed from both sides to the inside, which facilitates the installation and fixation of the adapter 321 and the sliding block 33.

[0050] In an embodiment, as shown in Figure 11 , the body of the sliding block 33 is provided with a first hollow hole 332, and the first hollow hole 332 can be provided with a plurality of first hollow holes 332, which are separated by ribs or plates. While reducing the overall weight of the sliding block 33, it ensures that the sliding block 33 has sufficient structural strength. As shown in Figure 5 , the hinge fixing member 31 is provided with a second hollow hole 313, and the second hollow hole 313 can be provided with a plurality of second hollow holes 313, which are separated by ribs or plates. While reducing the overall weight of the hinge fixing member 31, it ensures that the hinge fixing member 31 has sufficient structural strength. As shown in Figure 11 , the hinge movable member 32 is provided with a third hollow hole 323, and the third hollow hole 323 can be provided with a plurality of third hollow holes 323, which are separated by ribs or plates. While reducing the overall weight of the hinge movable member 32, it ensures that the hinge movable member 32 has sufficient structural strength.

[0051] In an embodiment, as shown in Figure 5 , Figure 7 , and Figure 11As shown, the hinge fixed part 31 is provided with a clamping groove 312, the hinge movable part 32 is connected with a hook 34, the clamping groove 312 should be able to make the hook 34 pass through and have a space for the hook 34 to slide in the radial direction, and the opening length of the hook 34 extends in the same direction as the sliding direction of the sliding block 33. The opening width of the hook 34 is greater than or equal to the thickness of the position of the clamping groove 312. In the closed position of the hinge fixed part 31 and the hinge movable part 32, the hook 34 is clamped in the position of the clamping groove 312, so that the hinge movable part 32 is locked relative to the hinge fixed part 31. In the open position of the hinge fixed part 31 and the hinge movable part 32, the hook 34 first moves in the radial direction in the clamping groove 312, and then penetrates the clamping groove 312 in the axial direction and is separated from the clamping groove 312, so that the hinge movable part 32 is opened relative to the hinge fixed part 31. The cooperation of the clamping groove 312 and the hook 34 can maintain the stability between the hinge fixed part 31 and the hinge movable part 32 in the closed position, so that the rotational connection between the sliding block 33 and the adapter 321 is no longer directly stressed, thereby reducing wear and tear and improving the stability and safety of the opening and closing mechanism 3.

[0052] In an embodiment, as shown in Figure 7 It also includes a spring 36 and an adjusting bolt 37, the hook 34 is provided with a baffle, the first end of the spring 36 abuts against the baffle, and the second end of the spring 36 abuts against the hinge movable part 32, so that the spring 36 can provide a thrust in the axial direction to push the baffle (together with the hook 34) towards the hinge fixed part 31. The tail end of the adjusting bolt 37 penetrates the hinge movable part 32 and is connected to the hook 34, and the head end of the adjusting bolt 37 is located on the side of the hinge movable part 32 away from the hinge fixed part 31. When the adjusting bolt 37 is rotated, the spacing between the hook 34 and the hinge movable part 32 can be adjusted, that is, the adjusting bolt 37 can provide a pulling force in the axial direction to pull the hook 34 towards the hinge movable part 32. Thus, under the joint action of the spring 36 and the adjusting bolt 37, the axial position of the hook 34 can be adjusted, so that the hook 34 is better matched with the hinge fixed part 31, and at the same time the spring 36 can abut against the hook 34 to keep the hook 34 in a stable position, thereby reducing the influence of vibration.

[0053] In an embodiment, as shown in Figure 7 It also includes a wear-resistant pad 39, which can be made of polytetrafluoroethylene material and has a low friction coefficient, which can effectively reduce the friction damage when the hook 34 is locked with the hinge fixed part 31. The wear-resistant pad 39 is located on the side of the hinge movable part 32 facing the hinge fixed part 31, and the wear-resistant pad 39 is installed near the clamping groove 312, and the inner surface of the hook 34 can directly contact and slide with the wear-resistant pad 39.

[0054] In an embodiment, as shown in Figure 11As shown, the card slots 312 are distributed in a matrix on the hinge fixing member 31, for example, in a rectangular distribution. The axial extension direction of each card slot 312 is parallel to each other, and the radial extension direction of each card slot 312 is parallel to each other, and each hook 34 can be synchronously penetrated through the card slot 312 and locked after position cooperation with the card slot 312. The arrangement of multiple card slots 312 can make the locking of the hinge movable member 32 and the hinge fixing member 31 more stable. In addition, the second hollow hole 313 and the third hollow hole 323 can be arranged in the middle, and the card slot 312 and the hook 34 can be arranged around, at this time, the hinge fixing member 31 and the hinge movable member 32 are both annular with hollow, and the stability of the overall structure of the hinge fixing member 31 and the hinge movable member 32 is further ensured by the card slot 312 and the hook 34 distributed around.

[0055] As shown in Figure 1 and Figure 2 The present application also provides an unmanned aerial vehicle, comprising a fuselage and a power cabin, the power cabin comprising a fixed cabin 1 and a movable cabin 2, and further comprising an opening and closing mechanism 3 as described above, the fixed cabin 1 is connected to the fuselage, the movable cabin 2 is connected to the fixed cabin 1 through the opening and closing mechanism 3, and through the arrangement of the opening and closing mechanism 3, the movable cabin 2 can be opened relative to the fixed cabin 1, and in the closed state, the rotating shaft 35 and the like can be hidden inside (the appearance is a complex curved surface) to keep the aerodynamic appearance clean, thereby ensuring the appearance integrity of the connection position of the fixed cabin 1 and the movable cabin 2, and ensuring that the aerodynamic performance is not affected. When installing the opening and closing mechanism 3, the hinge fixing member 31 is connected to the fixed cabin 1, and the hinge movable member 32 is connected to the movable cabin 2. When opening, first slide the movable cabin 2 upward, and then turn it upward; when closing, first turn the movable cabin 2 downward, and then slide it downward.

[0056] The principles and implementation modes of the present application are described by applying specific examples in the present application, and the above examples are only used to help understand the method of the present application and its core idea; at the same time, for those skilled in the art, according to the idea of the present application, the specific implementation mode and application range will be changed. In view of the above, the content of the present application should not be understood as a limitation of the present application.

Claims

1. An opening and closing mechanism for connecting a fixed cabin and a movable cabin of a UAV, characterized in that, include: A hinge fastener, wherein the hinge fastener is provided with a sliding groove; A hinge moving part, wherein the hinge moving part is connected to an adapter, and a contoured part is provided on the radially outer side of the adapter; And a slider, which is slidably disposed radially in the groove, and the adapter is rotatably connected to the slider; In the closed position, the contouring component blocks the slide groove; in the open position, the outer side of the slider has a space for the contouring component to rotate. The hinge fixing component is provided with a slot, and the hinge moving component is connected with a hook. The opening length direction of the hook is the same as the sliding direction of the slider. The opening width of the hook is greater than or equal to the thickness of the slot. In the closed position, the hook is locked in the slot. In the open position, the hook can pass through the slide groove axially.

2. The opening and closing mechanism according to claim 1, characterized in that: The sliding groove has U-shaped limiting grooves on both sides of its sliding direction, and the opening directions of the U-shaped limiting grooves are opposite to each other. The slider has limiting parts on both sides of its sliding direction, and the limiting parts are slidably disposed in the U-shaped limiting grooves.

3. The opening and closing mechanism according to claim 2, characterized in that: It also includes a limiting member that covers the U-shaped limiting groove and is used to limit the axial movement of the limiting part.

4. The opening and closing mechanism according to claim 1, characterized in that: It also includes a rotating shaft. The slider includes a body and two arms connected to the body. The adapter is located between the two arms. The rotating shaft is provided on each of the two arms. One end of the rotating shaft is connected to the arm, and the other end of the rotating shaft is inserted into the mounting hole of the adapter.

5. The opening and closing mechanism according to claim 4, characterized in that: The main body has a first hollow hole, the hinge fixing component has a second hollow hole, and the hinge moving component has a third hollow hole.

6. The opening and closing mechanism according to claim 1, characterized in that: It also includes a spring and an adjusting bolt. The hook is provided with a baffle. The first end of the spring abuts against the baffle, and the second end of the spring abuts against the hinge moving part. The tail end of the adjusting bolt passes through the hinge moving part and is connected to the hook. The head end of the adjusting bolt is located on the side of the hinge moving part away from the hinge fixing part.

7. The opening and closing mechanism according to claim 1, characterized in that: It also includes a wear-resistant pad, which is located on the side of the hinge moving part facing the hinge fixing part, and the wear-resistant pad is installed near the slot.

8. The opening and closing mechanism according to claim 1, characterized in that: The slots are arranged in a matrix on the hinge fastener, with the axial extension directions of each slot being parallel to each other and the radial extension directions of each slot being parallel to each other.

9. A drone, characterized in that, include: body; A fixed cabin, which is connected to the fuselage; Activity cabin; And the opening and closing mechanism as described in any one of claims 1-8, wherein the hinge fixing member is connected to the fixed compartment, and the hinge movable member is connected to the movable compartment.

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