Rotor head structure of unmanned helicopter

Abstract

The utility model discloses an unmanned helicopter rotor head structure which comprises a chassis, a rotating head fixedly connected to the top of the chassis and wing paddle assemblies arranged on the two sides of the rotating head, shielding mechanisms are fixedly connected to the front side and the rear side of the outer side of the top of the chassis, each shielding mechanism comprises a concave base, a rotating rod is arranged on the outer side of each concave base in a penetrating mode, and the wing paddle assemblies are arranged on the two sides of the rotating head. The inner side of the rotating rod penetrates to the inner side of the concave seat, a vertical plate is fixedly connected to the top of the rotating rod, a shielding cover is fixedly connected to the top of the vertical plate, the inner side of the shielding cover is located at the joint of the rotating head and the wing paddle assembly, and limiting mechanisms are fixedly connected to the front side and the rear side of the top of the chassis. According to the rotor head, the phenomenon that dust is easily accumulated at the joint of the traditional shaft body is changed, and the joint of the rotating head and the wing paddle assembly is covered by the shielding cover, so that the rotating flexibility of the shaft body is not influenced, and the use quality of the rotor head cannot be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of unmanned helicopter technology, specifically to a rotor head structure for an unmanned helicopter. Background Technology

[0002] The rotor head of an unmanned helicopter is one of the key components of the helicopter. It carries the main rotor and controls its movement, playing a vital role in the flight performance of the unmanned helicopter.

[0003] According to a patent published on the China Patent Network, the patent title is: "A Rotor Head Structure for an Unmanned Helicopter," patent application number: 201820048653.0. It includes: a main shaft component comprising an outer bushing and an inner main shaft. The outer bushing is a hollow cylindrical structure with openings at both ends. The inner main shaft is housed within the outer bushing, with its upper end extending beyond the upper end of the outer bushing and selectively movable along the length of the outer bushing; a central coupling located at the upper end of the inner main shaft; two rotor clamp components symmetrically arranged at both ends of the central coupling, each rotor clamp component including a vertical rod and two rectangular flat clamps for engaging the rotor; and a cross disc. It is sleeved on the outer bushing and near the upper end of the outer bushing; two rocker arm connecting rod components are set on the upper surface of the cross disk and symmetrically located on both sides of the inner main shaft, each rocker arm connecting rod component includes a first connecting rod and a second connecting rod; the unmanned helicopter rotor head structure provided by this utility model has a reasonable design, simple structure and low cost, and has extremely high promotion value; the connection of the rotor head shaft is always exposed, and if it is always exposed, it will inevitably accumulate dust and impurities in the air. When too much dust and impurities accumulate, it will affect the rotational flexibility of the shaft, causing the rotor head to fail to guarantee its quality of use.

[0004] Therefore, the rotor head needs to be redesigned to effectively prevent the shaft connection from being constantly exposed and prone to dust accumulation. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a rotor head structure for an unmanned helicopter, which has the advantage of shielding the shaft connection to prevent dust from entering, thus solving the problem that the shaft connection is always exposed and prone to dust accumulation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rotor head structure for an unmanned helicopter, including a chassis;

[0007] A rotating head fixedly connected to the top of the chassis;

[0008] The rotor assemblies are all located on both sides of the rotating head;

[0009] Both the front and rear sides of the top outer side of the chassis are fixedly connected to a shielding mechanism. The shielding mechanism includes a recessed seat, a rotating rod is provided through the outer side of the recessed seat, the inner side of the rotating rod extends through to the inner side of the recessed seat, a vertical plate is fixedly connected to the top of the rotating rod, and a shielding cover is fixedly connected to the top of the vertical plate. The inner side of the shielding cover is located at the connection between the rotating head and the rotor assembly. Both the front and rear sides of the top of the chassis are fixedly connected to a limiting mechanism, and the inner side of the limiting mechanism extends through to the interior of the rotating rod.

[0010] In a preferred embodiment of this utility model, the limiting mechanism includes a fixed plate, a pull rod extending through the outer side of the fixed plate, a movable plate fixedly connected to the inner side of the pull rod, the bottom of the movable plate being slidably connected to the chassis, spring pieces fixedly connected to both sides of the outer side of the movable plate, the outer sides of the spring pieces being fixedly connected to the fixed plate, L-shaped plates fixedly connected to both sides of the movable plate, a sliding plate fixedly connected to the inner side of the L-shaped plate, the bottom of the sliding plate being slidably connected to the chassis, and an insert rod fixedly connected to the top of the inner side of the sliding plate, the inner side of the insert rod extending into the interior of the rotating rod.

[0011] As a preferred embodiment of this utility model, protective mechanisms are fixedly connected to both sides of the top of the movable plate. The protective mechanism includes a connecting block, a folding plate is fixedly connected to the top of the connecting block, a protective plate is fixedly connected to the inner side of the folding plate, and the inner side of the protective plate is in contact with the rotating head.

[0012] As a preferred embodiment of this utility model, the front and rear sides of the outer top of the chassis are provided with sliding grooves, and the bottom of the slide plate is slidably connected to the inside of the sliding grooves.

[0013] As a preferred embodiment of this invention, a knob is fixedly connected to the outer side of the rotating rod, and the diameter of the knob is larger than the diameter of the rotating rod.

[0014] As a preferred embodiment of this invention, a bar is fixedly connected to the outer side of the pull rod, and the bar is used in conjunction with the pull rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model of rotor head changes the phenomenon that dust easily accumulates at the connection of the traditional shaft. It adopts a shield to cover the connection between the rotor head and the rotor assembly, which will not affect the rotation flexibility of the shaft and will not cause the rotor head to fail to guarantee its quality of use.

[0017] 2. By setting a limiting mechanism, this utility model enables the rotating rod to operate more stably and avoids shaking when it stops rotating.

[0018] 3. This utility model, through the setting of a protective mechanism, can protect the rotating head and increase its service life.

[0019] 4. The design of the slide groove in this utility model allows the skateboard to slide more smoothly inside the chassis, reducing friction between the skateboard and the chassis, extending the service life of the skateboard, and also limiting the movement of the skateboard.

[0020] 5. The knob design of this utility model enables the rotary rod to rotate more stably, while also increasing the convenience for the user.

[0021] 6. The design of this utility model, through the setting of the bar, makes it convenient for users to pull the lever, ensuring the ease of operation for users. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a structural diagram of the shielding mechanism, limiting mechanism, and protective mechanism of this utility model;

[0024] Figure 3 The structure of this utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0025] Figure 4 This is a partial three-dimensional view of the present invention.

[0026] In the diagram: 1. Chassis; 2. Rotating head; 3. Wing rotor assembly; 4. Shielding mechanism; 5. Recess; 6. Rotary rod; 7. Vertical plate; 8. Shielding cover; 9. Limiting mechanism; 10. Fixed plate; 11. Pull rod; 12. Moving plate; 13. Spring; 14. L-shaped plate; 15. Slide plate; 16. Insert rod; 17. Protective mechanism; 18. Connecting block; 19. Folding plate; 20. Protective plate; 21. Slide groove; 22. Knob; 23. Bar rod. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1 to 4 As shown, the present invention provides a rotor head structure for an unmanned helicopter, including a chassis 1;

[0029] A rotating head 2 is fixedly connected to the top of the chassis 1;

[0030] The rotor assemblies 3 are all located on both sides of the rotating head 2;

[0031] A shielding mechanism 4 is fixedly connected to the front and rear sides of the top outer side of the chassis 1. The shielding mechanism 4 includes a recess 5. A rotating rod 6 is provided through the outer side of the recess 5. The inner side of the rotating rod 6 extends to the inner side of the recess 5. A vertical plate 7 is fixedly connected to the top of the rotating rod 6. A shielding cover 8 is fixedly connected to the top of the vertical plate 7. The inner side of the shielding cover 8 is located at the connection between the rotating head 2 and the rotor assembly 3. A limiting mechanism 9 is fixedly connected to the front and rear sides of the top of the chassis 1. The inner side of the limiting mechanism 9 extends to the interior of the rotating rod 6.

[0032] refer to Figure 1 , Figure 2 and Figure 3 The limiting mechanism 9 includes a fixed plate 10, a pull rod 11 extending through the outer side of the fixed plate 10, a movable plate 12 fixedly connected to the inner side of the pull rod 11, the bottom of the movable plate 12 being slidably connected to the chassis 1, spring pieces 13 being fixedly connected to both sides of the outer side of the movable plate 12, the outer side of the spring pieces 13 being fixedly connected to the fixed plate 10, L-shaped plates 14 being fixedly connected to both sides of the movable plate 12, a slide plate 15 being fixedly connected to the inner side of the L-shaped plate 14, the bottom of the slide plate 15 being slidably connected to the chassis 1, and an insertion rod 16 being fixedly connected to the top of the inner side of the slide plate 15, the inner side of the insertion rod 16 extending through the interior of the rotating rod 6.

[0033] As a technical optimization of this utility model, the setting of the limiting mechanism 9 enables the rotating rod 6 to operate more stably and avoids shaking when it stops rotating.

[0034] refer to Figure 1 , Figure 2 and Figure 3 The top two sides of the movable plate 12 are fixedly connected to protective mechanisms 17. The protective mechanism 17 includes a connecting block 18. The top of the connecting block 18 is fixedly connected to a folding plate 19. The inner side of the folding plate 19 is fixedly connected to a protective plate 20. The inner side of the protective plate 20 is in contact with the rotating head 2.

[0035] As a technical optimization of this utility model, the protective mechanism 17 can protect the rotating head 2 and increase its service life.

[0036] refer to Figure 4 The chassis 1 has grooves 21 on the front and rear sides of the top outer side, and the bottom of the slide plate 15 is slidably connected to the inside of the grooves 21.

[0037] As a technical optimization of this utility model, the sliding groove 21 enables the skateboard 15 to slide more smoothly inside the chassis 1, reduces the friction between the skateboard 15 and the chassis 1, extends the service life of the skateboard 15, and at the same time limits the movement of the skateboard 15.

[0038] refer to Figure 2 A knob 22 is fixedly connected to the outside of the rotating rod 6. The diameter of the knob 22 is larger than the diameter of the rotating rod 6.

[0039] As a technical optimization of this utility model, the knob 22 enables the rotary rod 6 to rotate more stably, while increasing the convenience for the user.

[0040] refer to Figure 2 A bar 23 is fixedly connected to the outside of the pull rod 11, and the bar 23 is used in conjunction with the pull rod 11.

[0041] As a technical optimization of this utility model, the bar 23 makes it convenient for users to pull the lever 11, ensuring the ease of operation for users.

[0042] The working principle and usage process of this utility model are as follows: First, the user rotates the knob 22, which drives the rotating rod 6 to rotate. The rotating rod 6 drives the vertical plate 7 and the shield 8 to rotate, so that the shield 8 covers the connection between the rotating head 2 and the rotor assembly 3. Then, the user releases the pull rod 11. The pull rod 11, through the rebound force of the spring plate 13, drives the moving plate 12 to move inward. The moving plate 12 drives the L-shaped plate 14 and the sliding plate 15 to move inward. The sliding plate 15 drives the insertion rod 16 to move inward, so that the insertion rod 16 penetrates into the interior of the rotating rod 6, thereby achieving the effect of shielding the shaft connection to prevent dust from entering.

[0043] In summary, this unmanned helicopter rotor head structure changes the phenomenon of dust accumulation at the traditional shaft connection by using a shield 8 to cover the connection between the rotor head 2 and the rotor assembly 3, thus not affecting the rotational flexibility of the shaft and ensuring the quality of the rotor head's operation.

[0044] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An unmanned helicopter rotor head structure, comprising a chassis (1); a rotating head (2) fixedly connected to the top of the chassis (1); a wing assembly (3) arranged on both sides of the rotating head (2); characterized in that The front side and the rear side of the outer side of the top of the chassis (1) are fixedly connected with the shielding mechanism (4), the shielding mechanism (4) comprises a recess (5), the outer side of the recess (5) is provided with a rotating rod (6), the inner side of the rotating rod (6) penetrates to the inner side of the recess (5), the top of the rotating rod (6) is fixedly connected with a vertical plate (7), the top of the vertical plate (7) is fixedly connected with a shielding cover (8), the inner side of the shielding cover (8) is located at the connection between the rotating head (2) and the wing assembly (3), the front side and the rear side of the top of the chassis (1) are fixedly connected with a limiting mechanism (9), the inner side of the limiting mechanism (9) penetrates to the inside of the rotating rod (6).

2. The unmanned helicopter rotor head structure of claim 1, wherein: The limiting mechanism (9) comprises a fixed plate (10), the outer side of the fixed plate (10) is provided with a pull rod (11), the inner side of the pull rod (11) is fixedly connected with a moving plate (12), the bottom of the moving plate (12) is slidingly connected with the chassis (1), the outer side of the moving plate (12) is fixedly connected with a spring piece (13) on both sides, the outer side of the spring piece (13) is fixedly connected with the fixed plate (10), both sides of the moving plate (12) are fixedly connected with an L-shaped plate (14), the inner side of the L-shaped plate (14) is fixedly connected with a sliding plate (15), the bottom of the sliding plate (15) is slidingly connected with the chassis (1), the top of the inner side of the sliding plate (15) is fixedly connected with an insertion rod (16), the inner side of the insertion rod (16) penetrates to the inside of the rotating rod (6).

3. A rotor head structure for an unmanned helicopter according to claim 2, wherein: The top of the moving plate (12) is fixedly connected with a protection mechanism (17) on both sides, the protection mechanism (17) comprises a connecting block (18), the top of the connecting block (18) is fixedly connected with a folding plate (19), the inner side of the folding plate (19) is fixedly connected with a protection plate (20), the inner side of the protection plate (20) is in contact with the rotating head (2).

4. The unmanned helicopter rotor head structure of claim 2, wherein: The front side and the rear side of the outer side of the top of the chassis (1) are provided with a sliding groove (21), the bottom of the sliding plate (15) is slidingly connected in the inside of the sliding groove (21).

5. The unmanned helicopter rotor head structure of claim 1, wherein: The outer side of the rotating rod (6) is fixedly connected with a knob (22), the diameter of the knob (22) is greater than the diameter of the rotating rod (6).

6. The unmanned helicopter rotor head structure of claim 2, wherein: The outer side of the pull rod (11) is fixedly connected with a strip rod (23), the strip rod (23) is used in cooperation with the pull rod (11).

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