A motor mount assembly for a coaxial multi-rotor drone

The modularly designed motor mount assembly solves the problems of motor installation and vibration suppression in coaxial multi-rotor UAVs, improves flight stability and reliability, simplifies the motor installation process, and reduces manufacturing costs.

CN224546340UActive Publication Date: 2026-07-24NANJING AEROSPACE GUOQI INTELLIGENT EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING AEROSPACE GUOQI INTELLIGENT EQUIP CO LTD
Filing Date
2025-09-04
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

Traditional coaxial multi-rotor UAVs have problems in motor installation tilt adjustment, vibration suppression, ESC integration and maintenance convenience, resulting in complex structure, high cost, poor environmental adaptability, and affecting flight stability and reliability.

Method used

A modular motor mount assembly was designed, comprising a motor mount body, adapter, baffle, plug, and ESC mounting component. The motor mounting position is adjusted through a sliding groove structure, a rubber protective coil is used for shock absorption, the ESC mounting component is symmetrically arranged to improve stability, and the connection is secured by riveting.

Benefits of technology

It simplifies the motor installation and adjustment process, improves the adaptability and economy of UAVs in diverse applications, enhances flight stability and reliability, and avoids flight instability caused by insufficient power or slow response.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to multirotor unmanned plane technical field discloses a kind of motor seat subassembly of coaxial multirotor unmanned plane, including motor seat main body, motor seat adapter, motor seat adapter baffle, motor seat plug and electric governing installation piece;The motor seat main body is equipped with sliding slot structure, for with motor seat adapter sliding fit.This scheme aims at the functional defects such as insufficient power, channel response delay and poor stability that traditional multi-axis unmanned plane faces when executing roll, pitch and other attitude adjustment, and structural complexity, high manufacturing cost, weak environmental adaptability and other structural disadvantages, and innovative solution is proposed.The scheme simplifies the motor installation form adjustment process of multirotor coaxial unmanned plane, improves the adaptability and economy of unmanned plane in diversified application and flight environment, effectively avoids the flight instability phenomenon caused by insufficient power or response delay, significantly enhances the reliability and flight stability of system as a whole.
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Description

Technical Field

[0001] This utility model relates to the field of multi-rotor drone technology, specifically to a motor mount assembly for a coaxial multi-rotor drone. Background Technology

[0002] Multirotor drones, especially coaxial multirotor configurations, have been widely used in aerial photography, surveying, and agricultural plant protection due to their compact structure, high hovering efficiency, and flexible control. The coaxial dual-rotor design effectively counteracts reverse torque by having two sets of rotors rotate in opposite directions, improving power utilization without increasing the overall size of the drone. However, this configuration also presents new technical challenges, particularly in motor installation and power transmission.

[0003] Traditional coaxial multirotor UAVs typically use fixed-angle motors (such as outward tilt or dihedral tilt) to improve yaw control responsiveness and flight stability. While this design offers some performance improvements, it also has significant drawbacks: fixed tilt angles are difficult to adapt to diverse flight missions and environmental requirements; different models require customized motor mounts with specific angles, increasing R&D and manufacturing costs; and the rigid overall structure provides insufficient optimization for vibration suppression and power transmission efficiency. Furthermore, the installation layout of the electronic speed controller (ESC), cable routing, and ease of maintenance are often overlooked, affecting the overall reliability and practicality of the aircraft.

[0004] Therefore, there is an urgent need for a modular, adjustable, and highly integrated motor mount assembly to solve the problems existing in coaxial multi-rotor UAVs in terms of motor mounting tilt adjustment, vibration suppression, ESC integration, and maintenance convenience. Utility Model Content

[0005] The purpose of this invention is to provide a motor mount assembly for a coaxial multi-rotor unmanned aerial vehicle (UAV) to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A technical solution for a motor mount assembly of a coaxial multi-rotor UAV includes a motor mount body, a motor mount adapter, a motor mount adapter baffle, a motor mount plug, and an ESC mounting component;

[0008] The motor base body is provided with a sliding groove structure for sliding engagement with the motor base adapter;

[0009] The motor mount adapter is connected to the motor mount body through the sliding groove structure and is fixed by the motor mount adapter baffle and fasteners;

[0010] The motor mount adapter is provided with a motor mounting surface, which forms a preset angle with the horizontal plane for mounting the motor.

[0011] The motor mount plug is installed at the end of the motor mount body and has a protective coil inside for cable routing and protection. The protective coil inside the motor mount plug is made of rubber for cable sealing and shock absorption.

[0012] The electronic speed controller mounting component is located on the side of the motor base body and is used to install the electronic speed controller.

[0013] As a preferred technical solution, the angle between the motor mounting surface of the motor mount adapter and the horizontal plane is 3°, so that the motor is mounted at an outward tilt angle.

[0014] As a preferred technical solution, the motor mount adapter is modularly designed and has various tilt angle specifications, allowing for flexible adjustment of the motor mounting tilt angle by replacing the adapter.

[0015] As a preferred technical solution, the motor base body is provided with riveting holes for riveting and fixing to the drone arm.

[0016] As a preferred technical solution, the ESC mounting components are in two sets, symmetrically arranged on both sides of the motor base body. Each set of ESC mounting components includes two mounting brackets, which are connected and fixed to the electronic speed controller by bolts.

[0017] As a preferred technical solution, the motor mount adapter baffle is connected to the motor mount body by bolts to limit the displacement of the motor mount adapter and ensure connection stability.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This invention relates to a motor mount assembly for a coaxial multi-rotor unmanned aerial vehicle (UAV). This solution addresses the functional deficiencies of traditional multi-rotor UAVs when performing attitude adjustments such as roll and pitch, including insufficient power, slow channel response, and poor stability, as well as structural drawbacks such as high complexity, high manufacturing cost, and weak environmental adaptability. It proposes an innovative solution that simplifies the motor mounting and adjustment process for coaxial multi-rotor UAVs, improves the UAV's adaptability and economy in diverse applications and flight environments, effectively avoids flight instability caused by insufficient power or slow response, and significantly enhances the overall reliability and flight stability of the system. Attached Figure Description

[0020] Figure 1 This is a disassembled structural diagram of the motor mount assembly of a coaxial multi-rotor UAV.

[0021] Figure 2 This is a schematic diagram of the overall structure of the motor mount assembly of a coaxial multi-rotor UAV.

[0022] In the attached diagram, the following are the reference numerals: 1. Motor mount body; 2. Motor mount adapter baffle; 3. Motor mount adapter; 4. Motor; 5. Motor mount plug; 6. ESC mounting component. Detailed Implementation

[0023] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a further detailed description. For those skilled in the art, this utility model can be implemented without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of this utility model by illustrating examples.

[0024] like Figure 1 , Figure 2 As shown, this utility model provides a technical solution for a motor mount assembly of a coaxial multi-rotor UAV: ​​including a motor mount body 1, a motor mount adapter 3, a motor mount adapter baffle 2, a motor mount plug 5, and an ESC mounting component 6.

[0025] The motor mount body 1 serves as the basic structure of the entire assembly. It is designed with a sliding groove structure, which allows the motor mount adapter 3 to slide with the motor mount body 1, thereby providing the possibility of adjusting the motor installation position.

[0026] The motor mount adapter 3 is tightly connected to the motor mount body 1 via the aforementioned sliding groove structure. To ensure the stability of the connection, the motor mount adapter 3 is further secured by the motor mount adapter baffle 2 and fasteners. A key design feature of the motor mount adapter 3 is its motor mounting surface, which has a pre-set angle (typically 3°) with the horizontal plane. This design allows the motor 4 to be mounted at a certain outward tilt angle, optimizing flight performance.

[0027] The motor mount plug 5 is cleverly installed at the end of the motor mount body 1. A rubber protective coil is specially designed inside it. This design not only facilitates the cable threading, but also provides a dual function of cable sealing and shock absorption, greatly improving the stability and durability of the system.

[0028] The ESC mounting component 6, serving as the mounting platform for the electronic speed controller, is cleverly positioned on the side of the motor mount body 1. In practice, the ESC mounting component 6 is designed in two sets, symmetrically arranged on both sides of the motor mount body 1. Each set of ESC mounting components 6 includes two mounting brackets, which are connected by bolts to securely fix the electronic speed controller, ensuring its stability and reliability during flight.

[0029] The motor mount adapter 3 adopts a modular design, which means that it has a variety of different tilt angle specifications. Users can flexibly adjust the motor mounting tilt angle by simply replacing the adapter according to actual needs, which greatly improves the flexibility and adaptability of the system.

[0030] In addition, the motor mount body 1 is also provided with riveting holes. The design of these holes allows the motor mount assembly to be riveted and fixed to the drone arm, ensuring the stable installation of the entire assembly on the drone.

[0031] During the assembly process, the motor mount adapter baffle 2 is tightly connected to the motor mount body 1 by bolts. This design not only simplifies the assembly process, but also effectively limits the displacement of the motor mount adapter 3, ensuring the stability and reliability of the entire connection structure.

[0032] In summary, the coaxial multi-rotor UAV motor mount assembly provided by this utility model, through a series of ingenious designs and innovations, successfully solves the problems existing in traditional multi-rotor UAVs in terms of power transmission, structural complexity, manufacturing cost, and environmental adaptability, and provides strong support for the diversified applications and flight stability of UAVs.

[0033] The working principle and usage process of this utility model: After assembling the various components of this solution in sequence, work according to the above implementation methods according to actual needs to complete all working steps.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0035] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] The embodiments described above are not exhaustive, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the invention, enabling those skilled in the art to effectively utilize the invention and its modifications. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. A motor mount assembly for a coaxial multi-rotor unmanned aerial vehicle, characterized in that, It includes the motor base body (1), the motor base adapter (3), the motor base adapter baffle (2), the motor base plug (5), and the ESC mounting component (6); The motor base body (1) is provided with a sliding groove structure for sliding cooperation with the motor base adapter (3); The motor mount adapter (3) is connected to the motor mount body (1) through the sliding groove structure and is fixed by the motor mount adapter baffle (2) and fasteners; The motor mount adapter (3) is provided with a motor mounting surface, which forms a preset angle with the horizontal plane and is used to mount the motor (4); The motor mount plug (5) is installed at the end of the motor mount body (1) and has a protective coil inside for cable threading and protection. The protective coil inside the motor mount plug (5) is made of rubber for cable sealing and shock absorption. The electronic speed controller mounting component (6) is located on the side of the motor base body (1) and is used to install the electronic speed controller.

2. The motor mount assembly for a coaxial multi-rotor UAV according to claim 1, characterized in that: The motor mounting surface of the motor mount adapter (3) is at an angle of 3° to the horizontal plane, so that the motor (4) is mounted at an outward tilt angle.

3. The motor mount assembly for a coaxial multi-rotor UAV according to claim 1, characterized in that: The motor mount adapter (3) is a modular design with various tilt angle specifications. The motor mounting tilt angle can be flexibly adjusted by replacing the adapter.

4. The motor mount assembly for a coaxial multi-rotor UAV according to claim 1, characterized in that: The motor mount body (1) is provided with a riveting hole for riveting and fixing to the UAV arm.

5. The motor mount assembly for a coaxial multi-rotor UAV according to claim 1, characterized in that: The ESC mounting components (6) are in two sets, symmetrically arranged on both sides of the motor base body (1). Each set of ESC mounting components (6) includes two mounting brackets, which are connected and fixed to the electronic speed controller by bolts.

6. The motor mount assembly for a coaxial multi-rotor UAV according to claim 1, characterized in that: The motor mount adapter baffle (2) is connected to the motor mount body (1) by bolts to limit the displacement of the motor mount adapter (3) and ensure connection stability.