Coaxial arm of unmanned aerial vehicle
By setting up a connector that is offset to the same side on the shaft arm bracket of the coaxial arm of the drone, the torque of the motor generates an angle, and the vector synthesis principle generates a stable lift, which solves the problem that the drone is difficult to reach the expected height, and achieves a stable rise effect.
Patent Information
- Application Number
- CN202422133236.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-30
AI Technical Summary
The horizontal installation of the two motors of the coaxial system will generate relative torque, resulting in insufficient stability of the arm lift and making it difficult for the drone to reach the expected height.
By providing a connecting member offset to the same side on the shaft arm bracket, the motor is connected to the shaft arm bracket, so that the torque of the upper and lower motors generates an angle, and a stable vertical upward lift is generated using the vector synthesis principle.
Through this method, the lift stability of the drone is ensured and can be steadily raised to a preset height.
Smart Images
Figure CN222934115U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of unmanned aerial vehicle motors, in particular to a coaxial machine arm of an unmanned aerial vehicle. Background Art
[0002] Unmanned aerial vehicle, referred to as "drone", is an unmanned aircraft controlled by radio remote control equipment and self-contained program control device, or operated completely or intermittently autonomously by an on-board computer. Its application in aerial photography, agriculture, plant protection, micro selfie, express transportation, disaster relief, wildlife observation, infectious disease monitoring, surveying and mapping, news reporting, power inspection, disaster relief, film and television shooting, etc. has greatly expanded the use of drones themselves. Developed countries are also actively expanding industry applications and developing drone technology.
[0003] At present, when designing the coaxial arm in the drone, horizontal motors are coaxially arranged on the upper and lower end surfaces of the coaxial arm, and an ESC mounting hole is provided on the motor base to install the ESC, and a receiving cavity is provided in the motor base to accommodate the ESC.
[0004] However, the two motors of the coaxial system are installed horizontally, which will produce relative torque, resulting in insufficient stability of the arm lift, making it difficult for the drone to reach the desired height. Utility Model Content
[0005] Based on this, the purpose of the utility model is to provide a coaxial arm for a drone, aiming to solve the problem that the two motors of the current coaxial system installed horizontally will generate relative torque, resulting in insufficient stability of the arm lift, making it difficult for the drone to reach the expected height.
[0006] To achieve the above-mentioned purpose, the utility model is implemented through the following technical solutions: a coaxial arm of a drone, the coaxial arm of the drone comprising an axis arm mechanism, motors arranged on the upper and lower end surfaces of the axis arm mechanism, and electric regulators arranged on both sides of the axis arm mechanism;
[0007] The shaft arm mechanism comprises a mounting assembly, a cover assembly arranged on the front and rear end surfaces of the mounting assembly, and a connector arranged on the upper and lower end surfaces, wherein the mounting assembly comprises a shaft arm bracket and a mounting bracket arranged on the shaft arm bracket;
[0008] Among them, the two connecting parts are symmetrically arranged on the upper and lower end surfaces of the shaft arm bracket, and the two connecting parts are offset toward the same side for installing the motor. The mounting bracket arranged on the same side is used for installing the electric regulator, and a connecting arm is passed through the shaft arm bracket.
[0009] In summary, a coaxial arm for a drone proposed according to the present utility model connects motors to the arm bracket through connectors offset to the same side, causing the torques of the upper and lower motors to form an angle. Using the principle of vector synthesis, a stable vertically upward lift force is generated, enabling the drone to stably rise to a preset height. Specifically, the coaxial arm of the drone includes an arm mechanism, motors provided on the upper and lower end faces of the arm mechanism, and electronic speed controllers provided on both sides of the arm mechanism. The arm mechanism includes an installation assembly, cover assemblies provided on the front and rear end faces of the installation assembly, and connectors provided on the upper and lower end faces. The installation assembly includes an arm bracket and an installation bracket provided on the arm bracket. Two connectors are symmetrically offset to the same side and provided on the installation brackets on the upper and lower end faces of the arm bracket for installing motors. The motors are offset to the same side, causing an angle between the lift force components of the two motors. Using the principle of vector synthesis, the two component vectors are combined into the lift force of the drone, thereby ensuring the stable rise of the drone. The cover assemblies are provided on the front and rear end faces of the arm bracket to present the overall contour of the arm, and are further connected to the frame body through connecting arms passing through the arm bracket.
[0010] On the one hand according to the above technical solution, the connector includes a mounting plate, and connecting pins symmetrically provided on both sides of the mounting plate and arranged in the direction of the arm bracket, and the connecting pins are clamped between two mounting brackets on the same end face.
[0011] On the one hand according to the above technical solution, the mounting plate is provided with an avoidance portion for sleeving on the air outlet of the motor.
[0012] On the one hand according to the above technical solution, a chamfer is provided on the inner side of the connecting pin for buckling on the mounting bracket.
[0013] On the one hand according to the above technical solution, any of the mounting brackets includes a first guide rail and a second guide rail arranged parallel to the first guide rail, and the length of the second guide rail is greater than the length of the first guide rail.
[0014] On the one hand according to the above technical solution, a limiting column is provided between the first guide rail and the second guide rail.
[0015] On the one hand according to the above technical solution, a buckling step for cooperating with the chamfer is provided on the first guide rail.
[0016] On the one hand according to the above technical solution, the cover assembly includes a front cover connected to one end of the arm bracket close to the limiting column and a rear cover provided at the other end of the arm bracket, and lighting lamps are provided at both ends of the front cover close to the motor.
[0017] On the one hand according to the above technical solution, both the front cover and the rear cover are connected to the first guide rail through fasteners.
[0018] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Brief Description of the Drawings
[0019] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:
[0020] Figure 1 is a schematic structural diagram of a coaxial arm of a drone in an embodiment of the present utility model;
[0021] Figure 2 is a schematic structural diagram of an arm mechanism in an embodiment of the present utility model;
[0022] Figure 3 is an assembly schematic diagram of a connecting arm and a mounting assembly in an embodiment of the present utility model;
[0023] Figure 4 and Figure 5 are schematic structural diagrams of a connecting member from a certain perspective and another perspective respectively in an embodiment of the present utility model;
[0024] Figure 6 is a schematic structural diagram of an arm bracket and a mounting bracket in an embodiment of the present utility model;
[0025] Figure 7 is an assembly schematic diagram of a connecting member and a motor in an embodiment of the present utility model.
[0026] Explanation of the Symbols of the Components in the Drawings:
[0027] Arm mechanism 100, mounting assembly 110, arm bracket 111, mounting bracket 112, first guide rail 113, buckling step 114, second guide rail 115, limit post 116, cover assembly 120, front cover 121, lighting lamp 122, rear cover 123, connecting member 130, mounting plate 131, connecting pin 132, chamfer 133, connecting arm 140, motor 200, electronic speed controller 300. Detailed Description of the Embodiments
[0028] In order to make the objectives, features, and advantages of the present utility model more obvious and understandable, the following provides a detailed description of the specific embodiments of the present utility model in conjunction with the drawings. Several embodiments of the present utility model are shown in the drawings. However, the present 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 present utility model more thorough and comprehensive.
[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate 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 should not be construed as a limitation on the present utility model.
[0030] In the present utility model, unless otherwise clearly defined and limited, terms such as "installed", "connected", "connected to", "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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.
[0031] Please refer to Figures 1-7 , which shows a schematic structural diagram of a coaxial arm of a drone provided in an embodiment of the present utility model. The coaxial arm of the drone includes an arm mechanism 100, motors 200 provided on the upper and lower end faces of the arm mechanism 100, and electronic speed controllers 300 provided on both sides of the arm mechanism 100, wherein:
[0032] In order to solve the problem that the horizontal installation of the two motors 200 in the current coaxial system will generate relative torsion, resulting in insufficient stability of the arm lift and making it difficult for the drone to reach the expected height, the principle of vector synthesis can be used to make the lift provided by the two motors 200 installed vertically synthesize into a stable lift in the same direction. Therefore, in this embodiment, the arm mechanism 100 includes an installation component 110, cover components 120 provided on the front and rear end faces of the installation component 110, and connection components 130 provided on the upper and lower end faces. The two motors 200 on the upper and lower end faces are inclinedly connected to the installation component 110 through the connection components 130.
[0033] Further, to ensure the installation of the motor 200, the installation assembly 110 includes a shaft arm bracket 111 and an installation bracket 112 disposed along the length of the shaft arm bracket 111. The installation bracket 112 is disposed at the four corners of the shaft arm bracket 111 for installing the connecting member 130, the electronic speed controller 300, and the cover assembly 120. A connecting arm 140 is passed through the shaft arm bracket 111. Any of the installation brackets 112 includes a first guide rail 113 and a second guide rail 115 disposed parallel to the first guide rail 113. The length of the second guide rail 115 is greater than the length of the first guide rail 113. Since a buckling step 114 is provided on the first guide rail 113, when installing the connecting member 130, it is only necessary to align one end of the connecting member 130 with the first step and slide it along the buckling step 114 provided on the first guide rail 113, and the assembly is completed.
[0034] And to prevent the connecting member 130 from slipping off the first guide rail 113, a limiting post 116 is further provided between the first guide rail 113 and the second guide rail 115. Both ends of the limiting post 116 are respectively connected to the edges of the first guide rail 113 and the second guide rail 115.
[0035] Electronic speed controllers 300 are further provided on both sides of the shaft arm bracket 111. The electronic speed controllers 300 are disposed between the second guide rails 115 of the adjacent installation brackets 112 on the same side. Both ends of the electronic speed controller 300 abut against the second guide rail 115 or are connected to the side surface by means of bolt connection to avoid conflicts in the installation of the electronic speed controller 300 and the motor 200, and the two are independently installed and disassembled.
[0036] Furthermore, to cooperate with the limiting post 116 to limit the slipping of the connecting member 130, a cover assembly 120 is provided at the front and rear ends of the shaft arm bracket 111. The cover assembly 120 includes a front cover 121 connected to one end of the shaft arm bracket 111 close to the limiting post 116 and a rear cover 123 disposed at the other end of the shaft arm bracket 111. The front cover 121 and the rear cover 123 respectively buckle the two ends of the second guide rail 115 and are connected to the first guide rail 113 through fasteners. And lighting lamps 122 are provided at both ends of the front cover 121 close to the motor 200 to facilitate observing the operation of the motor 200 in a weakly lit environment.
[0037] For the purpose of the stable flight of the drone, the connecting member 130 includes a mounting plate 131 and connecting pins 132 symmetrically arranged on both sides of the mounting plate 131 and facing the direction of the shaft arm bracket 111. The connecting member 130 is clamped on the buckling step 114 on the first guide rail 113 of the mounting bracket 112 on the upper or lower end surface of the shaft arm bracket 111 through the connecting pins 132 for connecting the motor 200. In this embodiment, a chamfer 133 is provided on the inner side of the connecting pin 132. When assembling the connecting member 130, only need to align the chamfer 133 with the buckling step 114 on the first guide rail 113 and move along the length direction of the first guide rail 113 to complete the assembly. Additionally, for the consideration of enhancing the connection stability, perforations can be provided on the connecting pins 132. When the connecting member 130 moves to the preset position, the connecting member 130 and the shaft arm bracket 111 can be connected as a whole by bolts, thereby ensuring that the motor 200 does not move on the shaft arm bracket 111.
[0038] It is worth noting that in order to synthesize the lift components of the upper and lower two motors 200 into a lift vector through the principle of vector synthesis, the symmetrically arranged mounting plates 131 on the upper and lower sides are offset to the same side, so that there is an angle between the two lifts provided by the two motors 200 arranged on the two mounting plates 131. Thus, after the two lift components are synthesized, the lift vector is vertically upward, ensuring the stable flight of the drone.
[0039] In addition, since there are ventilation openings on the motor 200, when the mounting plate 131 is bolted to the bottom of the motor 200, the provided avoidance portion will be aligned with the ventilation openings of the motor 200 to complete the ventilation of the electronic speed controller 300 and achieve the purpose of cooling the electronic speed controller 300.
[0040] In summary, according to a coaxial arm drone proposed by the present utility model, by using connecting members offset to the same side to connect the motors to the shaft arm brackets, an angle is generated between the torques of the upper and lower two motors. Using the principle of vector synthesis, a stable vertically upward lift is generated, so that the drone can stably rise to the preset height. Specifically, the coaxial arm drone includes a shaft arm mechanism, motors arranged on the upper and lower end surfaces of the shaft arm mechanism, and electronic speed controllers arranged on both sides of the shaft arm mechanism. The shaft arm mechanism includes a mounting assembly, cover assemblies arranged on the front and rear end surfaces of the mounting assembly, and connecting members arranged on the upper and lower end surfaces. The mounting assembly includes a shaft arm bracket and a mounting bracket arranged on the shaft arm bracket. Two connecting members are symmetrically arranged on the mounting brackets on the upper and lower end surfaces of the shaft arm bracket and offset to the same side for mounting the motors. The motors are offset to the same side so that there is an angle between the lift components generated by the two motors. Using the principle of vector synthesis, the two component vectors are synthesized into the lift of the drone, thereby ensuring the stable rise of the drone. The cover assemblies are arranged on the front and rear end surfaces of the shaft arm bracket to show the overall contour of the arm, and are further connected to the frame body through a connecting arm passing through the shaft arm bracket.
[0041] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0042] The above-described embodiments merely represent several implementation manners of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.
Claims
1. A coaxial arm of an unmanned aerial vehicle, characterized in that: The drone coaxial arm includes an axis arm mechanism, motors arranged on the upper and lower end surfaces of the axis arm mechanism, and electric regulators arranged on both sides of the axis arm mechanism; The shaft arm mechanism comprises a mounting assembly, a cover assembly arranged on the front and rear end surfaces of the mounting assembly, and a connector arranged on the upper and lower end surfaces, wherein the mounting assembly comprises a shaft arm bracket and a mounting bracket arranged on the shaft arm bracket; Among them, the two connecting parts are symmetrically arranged on the upper and lower end surfaces of the shaft arm bracket, and the two connecting parts are offset toward the same side for installing the motor. The mounting bracket arranged on the same side is used for installing the electric regulator, and a connecting arm is passed through the shaft arm bracket.
2. The drone coaxial arm according to claim 1, characterized in that: The connecting member comprises a mounting plate, and connecting pins symmetrically arranged on both sides of the mounting plate and arranged toward the direction of the shaft arm bracket, and the connecting pins are clamped on two mounting brackets on the same end surface.
3. The drone coaxial arm according to claim 2, characterized in that: The mounting plate is provided with a avoiding portion for being sleeved on the air outlet of the motor.
4. The drone coaxial arm according to claim 3, characterized in that: The inner side of the connecting pin is provided with a chamfer for buckling on the mounting bracket.
5. The drone coaxial arm according to claim 1, characterized in that: Any of the mounting brackets includes a first guide rail and a second guide rail arranged parallel to the first guide rail, wherein the length of the second guide rail is greater than the length of the first guide rail.
6. The drone coaxial arm according to claim 5, characterized in that: A limiting column is provided between the first guide rail and the second guide rail.
7. The drone coaxial arm according to claim 6, characterized in that: The first guide rail is provided with a buckling step used in conjunction with the chamfer.
8. The drone coaxial arm according to claim 1, characterized in that: The cover assembly comprises a front cover connected to one end of the shaft arm bracket close to the limiting column, and a rear cover arranged at the other end of the shaft arm bracket. Both ends of the front cover close to the motor are provided with lighting lamps.
9. The drone coaxial arm according to claim 8, characterized in that: The front cover and the rear cover are both connected to the first guide rail by fasteners.