Paddle variable pitch structure of unmanned aerial vehicle
By introducing rotating columns and fixed-distance columns into the drone blade clip box, and adjusting the pitch using locking components and positioning blocks, the problems of low efficiency and high cost of power enhancement methods in the prior art are solved, and power improvement is achieved and cost reduction effects.
Patent Information
- Application Number
- CN202420229489.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-30
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-01-30
AI Technical Summary
When increasing power, existing drones need to replace different models of blades or increase their speed, resulting in reduced flight efficiency and increased costs, and inconvenient portability.
A drone blade variable distance structure is designed, and the power enhancement is achieved by introducing rotating columns and fixed distance columns into the paddle clamp box, locking components and positioning blocks are used to adjust the pitch, instead of replacing the blades or increasing the rotation speed. .
This structure not only improves the power performance of the drone, but also extends the battery life, reduces transportation and maintenance costs, and simplifies the carrying process.
Smart Images
Figure CN222247756U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of unmanned aerial vehicles, in particular to a variable pitch structure of a blade of an unmanned aerial vehicle. Background Art
[0002] A drone is an unmanned aircraft controlled by a radio remote control device and a self-contained program control device, or operated completely or intermittently autonomously by an onboard computer. The propeller blades on a drone, as the power actuator of the drone system, are large in size and easy to wear. During transportation, the propeller blades take up too much space and are prone to collision and wear, so the transportation cost is high. Therefore, the propeller blades need to be disassembled and placed separately. When the drone needs to be used, the propeller blades need to be assembled, so users need to disassemble and assemble the propeller blades frequently.
[0003] At present, multi-rotor drones usually use fixed-pitch propellers. The blades continuously push a large amount of air backwards, generating a forward force on the blades, i.e., propulsion. In order to keep each section of the blade within a favorable angle of attack range with respect to the airflow, the installation angle of each section also decreases as the distance from the rotating shaft increases. In order to adapt to different environments, the power is generally enhanced by replacing different blades or increasing the blade speed to meet the requirements for the drone to rise.
[0004] However, increasing the rotation speed to enhance power will increase the rate at which battery energy is consumed, resulting in reduced flight efficiency; carrying propellers of different models will increase flight costs and is extremely inconvenient. Utility Model Content
[0005] Based on this, the purpose of the utility model is to provide a UAV blade variable pitch structure, aiming to solve the current method of replacing different blades or increasing the blade speed to enhance the power of the UAV, which has the problems of reduced flight efficiency, increased cost and inconvenience in carrying.
[0006] To achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: a variable pitch structure of a drone blade, comprising a propeller clamp box connected to a rotor, propeller roots arranged at both ends of the propeller clamp box assembly, and a locking assembly passing through the propeller clamp box;
[0007] Both sides of the propeller clamp box are provided with a first adjustment groove and a second adjustment groove for accommodating the propeller root, a positioning block is provided in the second adjustment groove, and a positioning hole is provided on the positioning block. One end of the propeller root is provided with a clamping plate for connecting the propeller blade, and the other end is provided with a rotating column and a spacing column. The rotating column is passed through the first adjustment groove and drives the propeller blade to rotate by rotating. The spacing column is passed through positioning holes of different models to determine different propeller pitches, and the propeller root is fixed in the propeller clamp box by a locking assembly.
[0008] In summary, according to the variable pitch structure of the UAV blades proposed by the utility model, the rotating column rotates in the first adjustment slot to drive the blades to rotate, and the fixed-pitch column is inserted into the positioning hole to fix the pitch of the blades. By replacing the blades or increasing the rotation speed with the small positioning block, the UAV is provided with stronger power, which not only ensures the flight efficiency but also reduces the cost, and the small positioning block is also easier to carry. Specifically, the variable pitch structure of the UAV blades includes a propeller clamp box connected to the rotor, propeller roots arranged at both ends of the propeller clamp box assembly, and a locking assembly inserted through the propeller clamp box. Both sides of the propeller clamp box are provided with a first adjustment slot and a second adjustment slot for accommodating the propeller root. A positioning block is provided in the second adjustment slot, and a positioning hole is provided on the positioning block. One end of the propeller root is provided with a clamp for connecting the propeller blade, and the end away from the clamp is provided with a rotating column and a distance column. The rotating column is inserted into the first adjustment slot and rotates to drive the propeller blade to rotate. The distance column is inserted into different types of positioning holes to determine different propeller pitches, and the propeller root is fixed in the propeller clamp box through a locking assembly. While providing stronger power for the drone, it also ensures the endurance, reduces costs, and is more convenient to carry.
[0009] Furthermore, the paddle clamp box includes a first deformable portion and a second deformable portion, a locking gap is left between the first deformable portion and the second deformable portion, the locking gap passes through the first adjustment slot and the second adjustment slot, and the locking assembly passes through the locking gap.
[0010] Furthermore, a limiting hole and locking holes respectively arranged on both sides of the limiting hole are provided on the paddle clamp box along a direction perpendicular to the first adjusting slot, and the limiting hole partially overlaps with the first adjusting slot so that the locking assembly clamps the rotating column.
[0011] Furthermore, the locking hole passes through the locking gap and connects the first deformation part and the second deformation part through the locking assembly.
[0012] Furthermore, a buffer gap is provided on the positioning block, and the buffer gap is connected to the positioning hole to form a buffer notch.
[0013] Furthermore, the locking assembly includes a limiting member inserted into the limiting hole, a locking member inserted into the locking hole, and a connecting member connecting the limiting member and the locking member, and the limiting member and the locking member are both used to connect the first deformation part and the second deformation part.
[0014] Furthermore, one end of the connecting member passes through the end of the limiting member, and the other end is buckled with the end of the locking member.
[0015] Furthermore, the locking member is provided with a buckling portion used in conjunction with the connecting member, and the connecting member is buckled with the buckling portion to clamp the connecting member on the locking member.
[0016] Furthermore, an annular groove is provided on the outer periphery of the rotating column, and the annular groove is directly opposite to the limiting hole for clamping the limiting member.
[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0019] Figure 1 This is a schematic diagram of the variable pitch structure of the UAV blades in one embodiment of the utility model;
[0020] Figure 2 It is a schematic diagram of the assembly of the paddle clamp box and the locking assembly;
[0021] Figure 3 is a schematic diagram of the structure of the paddle clamp box;
[0022] Figure 4 It is a structural diagram of the positioning block;
[0023] Figure 5 is a schematic diagram of the structure of the locking assembly;
[0024] Figure 6 is a schematic diagram of the structure of the locking member;
[0025] Figure 7 This is a schematic diagram of the assembly of the blade and the root of the propeller;
[0026] Figure 8 This is a schematic diagram of the structure of the propeller root.
[0027] Component symbol description:
[0028] The paddle clamp box 100, the first deformation part 110, the second deformation part 120, the first adjustment groove 130, the second adjustment groove 140, the locking gap 150, the limiting hole 160, the locking hole 170, the positioning block 200, the positioning hole 210, the buffer gap 220, the locking assembly 300, the limiting member 310, the notch part 311, the locking member 320, the buckling part 321, the connecting member 330, the paddle root 400, the splint 410, the rotating column 420, the annular groove 421, the distance column 430, and the paddle blade 500. DETAILED DESCRIPTION
[0029] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. Several embodiments of the utility model are given in the accompanying drawings. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.
[0030] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may also be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right", "upper", "lower" and similar expressions used herein are for illustrative purposes only and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model.
[0031] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0032] Please combine Figure 1-Figure 8 , which shows a UAV blade pitch changing structure provided in one embodiment of the utility model, the UAV blade pitch changing structure comprises a propeller clamp box 100 connected to the rotor, propeller roots 400 arranged at both ends of the propeller clamp box 100 assembly, and a locking assembly 300 passing through the propeller clamp box 100, wherein:
[0033] Compared with the conventional connection method in which the blade 500 is directly mounted on the rotor, the present application avoids adjusting the pitch by replacing the blade 500 by connecting the blade clamp box 100 to the rotor and connecting the blade 500 through the blade root 400. The blade clamp box 100 includes a first deformable portion 110 and a second deformable portion 120. In order to facilitate the installation of the blade root 400, a locking gap 150 is reserved between the first deformable portion 110 and the second deformable portion 120, so that when the blade clamp box 100 is not locked, the end of the blade root 400 away from the blade 500 can be easily assembled into the blade clamp box 100.
[0034] In order to assemble the propeller root 400, a first adjustment groove 130 and a second adjustment groove 140 for accommodating the propeller root 400 are provided on both sides of the propeller clamp box 100. The first adjustment groove 130 and the second adjustment groove 140 are provided at the first deformation part 110 and the second deformation part 120 at the same time, so that the propeller root 400 is fixed between the first deformation part 110 and the second deformation part 120 through the locking assembly 300. In order to connect with the propeller clamp box 100, one end of the propeller root 400 is provided with a clamping plate 410 for connecting with the blade 500, and the end away from the clamping plate 410 is provided with a rotating column 420 and a distance column 430. In order to connect with the propeller clamp box 100, the first adjustment groove 130 is set to be circular to accommodate the rotating column 420, and the second adjustment groove 140 is provided with a positioning block 200, and the positioning block 200 is provided with a positioning hole 210 for accommodating the distance column 430. The rotating column 420 is inserted into the first adjustment slot 130 , and the spacing column 430 is inserted into the positioning hole 210 . When the pitch needs to be adjusted, the rotating column 420 only needs to be rotated to drive the blade 500 to rotate, thereby adjusting the pitch of the blade 500 .
[0035] If the adjusted pitch is to be fixed, the distance column 430 is inserted into the positioning hole 210 to limit the further rotation of the rotating column 420, thereby fixing the pitch. Furthermore, if multiple pitches need to be adjusted, it is only necessary to replace different types of positioning blocks 200, that is, the positions of the positioning holes 210 on different positioning blocks 200 are different, and different positioning holes 210 are set to adjust different pitches.
[0036] Furthermore, due to the existence of the locking gap 150, the positioning block 200 can be better placed in the second adjustment groove 140. When the propeller root 400 is inserted into the positioning hole 210 and fixed by the locking assembly 300, the positioning block 200 abuts against the first deformation part 110 and the second deformation part 120 respectively, resulting in the first deformation part 110 and the second deformation part 120 being unable to lock the rotating column 420, thereby causing the rotating column 420 to shake in the first adjustment groove 130, causing the propeller blade 500 to shake, and the drone cannot take off normally. Therefore, a buffer gap 220 is provided on the positioning block 200, and the buffer gap 220 is connected to the positioning hole 210 to form a buffer gap. When the locking member 320 connects the first deformation part 110 and the second deformation part 120, due to the closure of the buffer gap 220, the first deformation part 110 approaches the second deformation part 120 until the rotating column 420 is locked in the first adjustment groove 130.
[0037] In order to fix the first deformable part 110 and the second deformable part 120, a limiting hole 160 and locking holes 170 respectively arranged on both sides of the limiting hole 160 are arranged on the paddle clamp box 100 in a direction perpendicular to the first adjustment slot 130. The limiting hole 160 partially overlaps with the first adjustment slot 130, so that the locking assembly 300 can clamp the rotating column 420. The locking assembly 300 includes a limiting member 310 inserted into the limiting hole 160, a locking member 320 inserted into the locking hole 170, and a connecting member 330 connecting the limiting member 310 and the locking member 320. The limiting member 310 and the locking member 320 are both used to connect the first deformable part 110 and the second deformable part 120. Since both the limiting member 310 and the locking member 320 have threaded portions at their bottoms, threaded portions are provided on the inner circumferences of the locking hole 170 and the limiting hole 160 of the second deformation portion 120, and the first deformation portion 110 and the second deformation portion 120 are connected by threaded connection, thereby fixing the rotating column 420 and the distance column 430 in the paddle clamp box 100.
[0038] In order to prevent the limiting member 310 and the locking member 320 from rotating on the paddle clamp box 100, one end of the connecting member 330 passes through the end of the limiting member 310, and the other end is buckled with the end of the locking member 320. The locking member 320 is provided with a buckling portion 321 used in conjunction with the connecting member 330 to clamp the connecting member 330 on the locking member 320. Through the locking function of the connecting member 330, the loosening of the limiting member 310 and the locking member 320 is prevented, and the stability of the paddle clamp box 100 is ensured. When the positioning block 200 needs to be replaced, it is only necessary to remove the connecting member 330 from the buckling portion 321, loosen the locking member 320 and the limiting member 310, lose the restrictions of the first deformation portion 110 and the second deformation portion 120, and remove the current positioning block 200.
[0039] It is worth noting that, in order to clamp the rotating column 420 and prevent it from falling off from the oar clamp box 100, an annular groove 421 is provided on its outer circumference, and the annular groove 421 is directly opposite to the limiting hole 160. Since the limiting hole 160 partially overlaps with the first adjustment groove 130, when the limiting member 310 is inserted into the limiting hole 160, the limiting member 310 is just clamped in the annular groove 421 to prevent the rotating column 420 from moving along the axial direction of the first adjustment groove 130, thereby preventing the oar root 400 from falling off.
[0040] In some optional embodiments, the annular groove 421 is clamped on the stopper 310 so that the rotating column 420 can rotate on the stopper 310. If the oar root 400 needs to be removed from the oar clamp box 100, the stopper 310 needs to be removed. In order to quickly remove the stopper 310, notches 311 are respectively provided on both sides of the stopper 310. When the stopper 310 is rotated so that the notch 311 faces the first adjustment groove 130, there is no overlapped portion of the stopper 310 with the first adjustment groove 130, and the annular groove 421 loses its restriction, so that the rotating column 420 can be pulled out of the first adjustment groove 130, and then the oar root 400 can be removed from the oar clamp box 100.
[0041] The propeller clamp box 100 can also be directly fixed to the rotor through fasteners by providing connecting seats at both ends thereof. It is worth emphasizing that the connecting seat is connected to both the first deformation part 110 and the second deformation part 120. Through slight deformation, the first deformation part 110 and the second deformation part 120 are connected through the locking member 320 and the limit member 310.
[0042] In summary, according to the variable pitch structure of the UAV blades proposed by the utility model, the rotating column rotates in the first adjustment slot to drive the blades to rotate, and the fixed-pitch column is inserted into the positioning hole to fix the pitch of the blades. By replacing the blades or increasing the rotation speed with the small positioning block, the UAV is provided with stronger power, which not only ensures the flight efficiency but also reduces the cost, and the small positioning block is also easier to carry. Specifically, the variable pitch structure of the UAV blades includes a propeller clamp box connected to the rotor, propeller roots arranged at both ends of the propeller clamp box assembly, and a locking assembly inserted through the propeller clamp box. Both sides of the propeller clamp box are provided with a first adjustment slot and a second adjustment slot for accommodating the propeller root. A positioning block is provided in the second adjustment slot, and a positioning hole is provided on the positioning block. One end of the propeller root is provided with a clamp for connecting the propeller blade, and the end away from the clamp is provided with a rotating column and a distance column. The rotating column is inserted into the first adjustment slot and rotates to drive the propeller blade to rotate. The distance column is inserted into different types of positioning holes to determine different propeller pitches, and the propeller root is fixed in the propeller clamp box through a locking assembly. While providing stronger power for the drone, it also ensures the endurance, reduces costs, and is more convenient to carry.
[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0044] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.
Claims
1. A variable pitch structure of a drone blade, characterized in that: It includes a propeller clamp box connected to a rotor, propeller roots arranged at both ends of the propeller clamp box assembly, and a locking assembly passing through the propeller clamp box; Both sides of the propeller clamp box are provided with a first adjustment groove and a second adjustment groove for accommodating the propeller root, a positioning block is provided in the second adjustment groove, and a positioning hole is provided on the positioning block. One end of the propeller root is provided with a clamping plate for connecting the propeller blade, and the other end is provided with a rotating column and a spacing column. The rotating column is passed through the first adjustment groove and drives the propeller blade to rotate by rotating. The spacing column is passed through positioning holes of different models to determine different propeller pitches, and the propeller root is fixed in the propeller clamp box by a locking assembly.
2. The UAV blade pitch-changing structure according to claim 1, characterized in that: The paddle clamp box includes a first deformable portion and a second deformable portion, a locking gap is left between the first deformable portion and the second deformable portion, the locking gap passes through the first adjustment slot and the second adjustment slot, and the locking assembly passes through the locking gap.
3. The UAV blade pitch-changing structure according to claim 2, characterized in that: The paddle clamp box is provided with a limiting hole and locking holes respectively provided on both sides of the limiting hole in a direction perpendicular to the first adjusting slot, and the limiting hole partially overlaps with the first adjusting slot so that the locking assembly clamps the rotating column.
4. The UAV blade pitch-changing structure according to claim 3, characterized in that: The locking hole passes through the locking gap and is connected to the first deformation part and the second deformation part through the locking assembly.
5. The UAV blade pitch-changing structure according to claim 1, characterized in that: The positioning block is also provided with a buffer gap, and the buffer gap is connected to the positioning hole to form a buffer notch.
6. The UAV blade pitch-changing structure according to claim 3, characterized in that: The locking assembly includes a limiting member inserted into the limiting hole, a locking member inserted into the locking hole, and a connecting member connecting the limiting member and the locking member, wherein the limiting member and the locking member are both used to connect the first deformation part and the second deformation part.
7. The UAV blade pitch-changing structure according to claim 6, characterized in that: One end of the connecting piece passes through the end of the limiting piece, and the other end is buckled with the end of the locking piece.
8. The UAV blade pitch-changing structure according to claim 7, characterized in that: The locking member is provided with a buckling portion used in conjunction with the connecting member, and the connecting member is buckled with the buckling portion to clamp the connecting member on the locking member.
9. The UAV blade pitch-changing structure according to claim 6, characterized in that: An annular groove is arranged on the outer periphery of the rotating column, and the annular groove is directly opposite to the limiting hole so as to clamp the limiting member.