Unmanned aerial vehicle motor anti-vibration fixing structure

Abstract

The utility model discloses an unmanned plane motor anti -vibration fixed structure, including motor installation casing, its top is equipped with ring mounting groove, its bottom is equipped with heat dissipation through -hole and multistage buffer assembly, is constituted by at least three buffer units that evenly distributed along the circumference, and each buffer unit includes the soft rubber column of annular mounting groove, annular clamp spare and hard limiting ring, hard limiting ring is with the interference fit of ring mounting groove, and its height is less than the free height of soft rubber column. Multistage buffer assembly combines the high damping characteristic of thermoplastic polyurethane soft rubber column and the rigid constraint of glass fiber reinforced nylon limiting ring, and evenly distributed buffer unit realizes all -round vibration attenuation, and the flight stability is greatly promoted. The elastic gap of annular clamp spare adapts multi -specification motor, and the mounting ear locking structure guarantees the holding force, and the quick -release bolt cooperation rotor avoids the groove and significantly simplifies the dismounting process.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, specifically to a vibration-damping and fixing structure for a drone motor. Background Technology

[0002] As the core power source of drones, the motor's vibration control and heat dissipation efficiency directly determine flight stability and service life. Existing drone motor mounting structures have several shortcomings: vibration damping often uses a single soft rubber buffer, lacking rigid restraint and prone to excessive deformation; furthermore, the number of circumferentially distributed buffer units is insufficient to counteract multi-dimensional vibrations; clamps are mostly of fixed dimensions, requiring specialized parts to fit different motor specifications, and rigid contact during assembly can easily generate secondary vibrations; heat dissipation designs often use planar through-holes, resulting in turbulent airflow and low heat dissipation efficiency, and the direct impact of high-temperature airflow on the soft rubber buffer accelerates its aging. These problems lead to increased drone vibration and excessive motor temperature rise during flight, shortening the overall service life of the drone. Therefore, a mounting structure that balances vibration damping stability, assembly compatibility, and efficient heat dissipation is urgently needed. Summary of the Invention

[0003] In order to overcome the shortcomings of existing technical solutions, this utility model provides a vibration-damping fixing structure for drone motors, which can effectively solve the problems mentioned in the background technology.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A vibration damping and fixing structure for a drone motor, comprising: The motor mounting housing has an annular mounting groove on the top and heat dissipation holes on the bottom. A multi-level buffer assembly, comprising at least three buffer units evenly distributed circumferentially, each buffer unit including: A soft rubber column that passes through the annular mounting groove has a motor connection platform at its top. A rigid limiting ring is fitted around the outside of the soft rubber column. The rigid limiting ring is interference-fitted with the annular mounting groove, and its height is less than the free height of the soft rubber column. The ring clamp has an inner wall with an annular groove that matches the motor housing, and an outer wall with a locking protrusion that engages with the motor connecting platform. The heat dissipation and airflow guiding structure includes an inclined airflow guiding surface located at the bottom of the motor mounting housing, wherein the heat dissipation through holes are distributed circumferentially along the airflow guiding surface and avoid the projection area of ​​the soft rubber column.

[0005] As a further description of the above technical solution, the soft rubber column is made of thermoplastic polyurethane, and the rigid limiting ring is made of glass fiber reinforced nylon, with a gap of 0.1-0.3mm between its inner wall and the outer wall of the soft rubber column.

[0006] As a further description of the above technical solution, the annular clamp has two elastic slits along its circumference, and its two ends are provided with mounting ears with locking holes.

[0007] As a further description of the above technical solution, the motor mounting housing sidewall is provided with a longitudinally extending slide groove, and the outer wall of the rigid limiting ring is provided with a limiting key that cooperates with the slide groove.

[0008] As a further description of the above technical solution, the angle between the inclined guide surface and the horizontal plane is 15°-30°, and the axis of the heat dissipation through hole is perpendicular to the guide surface.

[0009] As a further description of the above technical solution, it also includes a quick-release bolt that passes through the locking hole, the head of which is provided with a rotor clearance groove.

[0010] As a further description of the above technical solution, the number of buffer units is 6.

[0011] Compared with the prior art, the beneficial effects of this utility model are: The anti-vibration fixing structure for a drone motor of this utility model has at least one of the following beneficial effects during use: The multi-stage buffer assembly combines the high damping characteristics of thermoplastic polyurethane soft rubber pillars with the rigid constraint of glass fiber reinforced nylon limiting rings. The evenly distributed buffer units achieve all-around vibration attenuation, significantly improving flight stability. The elastic gaps of the ring clamps accommodate various motor sizes, while the mounting ear locking structure ensures clamping force. Quick-release bolts combined with rotor clearance grooves significantly simplify the assembly and disassembly process. The cooperation of the sliding grooves and limiting keys prevents circumferential misalignment of the buffer units, extending the lifespan of the soft rubber pillars. The inclined airflow guide surface and directional heat dissipation through-hole design improve heat dissipation efficiency and avoid the projection area of ​​the soft rubber pillars, preventing high-temperature aging. The overall structure balances vibration resistance, heat dissipation, ease of assembly, and stability, effectively extending the service life of the entire UAV and adapting to complex flight scenarios. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of a vibration-damping fixing structure for a drone motor according to this utility model; Figure 2 This is a schematic diagram of the first side view of the anti-vibration fixing structure for a drone motor according to the present invention; Figure 3 This is a schematic diagram of the second side structure of a vibration-damping fixing structure for a drone motor according to the present invention; Figure 4 This is a partial perspective structural diagram of a vibration-damping and fixing structure for a drone motor according to the present invention.

[0013] Numbering on the map: 1. Motor mounting housing; 2. Multi-stage buffer assembly; 3. Annular clamp; 4. Heat dissipation and airflow guiding structure; 5. Annular mounting groove; 6. Soft rubber column; 7. Elastic gap; 8. Motor connecting platform; 9. Mounting ear; 10. Quick release bolt; 11. Inclined airflow guiding surface; 12. Limit key; 13. Slide groove. Detailed Implementation

[0014] 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.

[0015] like Figure 1-4 As shown, this utility model provides a vibration-damping and fixing structure for a drone motor, comprising: The motor mounting housing 1 has an annular mounting groove 5 on its top and a heat dissipation hole on its bottom. The motor is initially positioned via an annular clamp 3—its inner annular groove fits snugly against the motor housing, and its outer locking protrusion engages with the motor connecting platform 8 at the top of the soft rubber column 6, forming a pre-fixed connection. The elastic gap 7 of the annular clamp 3 can accommodate motor housings of different sizes, and the mounting ears 9 at both ends are locked with bolts (or quick-release bolts 10) to complete the rigid connection between the motor and the buffer assembly. The buffer unit is fixed by an interference fit between a rigid limiting ring and the annular mounting groove 5 of the motor mounting housing 1, and the limiting key 12 on the outer wall of the rigid limiting ring engages with the sliding groove 13 of the housing to achieve circumferential anti-rotation positioning.

[0016] The multi-level buffer assembly 2 consists of at least three buffer units evenly distributed circumferentially, each buffer unit comprising: The soft rubber column 6 passes through the annular mounting groove 5 and has a motor connecting platform 8 at its top. A rigid limiting ring is fitted around the outside of the soft rubber column 6. The rigid limiting ring is interference-fitted with the annular mounting groove 5, and its height is less than the free height of the soft rubber column 6. The annular clamp 3 has an annular groove on its inner wall that matches the motor housing, and a locking protrusion on its outer wall that engages with the motor connecting platform 8. The vibration generated by the motor operation is first transmitted to the annular clamp 3, where it is initially buffered by its elastic deformation. Then the vibration is transmitted to the soft rubber column 6, which is made of thermoplastic polyurethane and absorbs most of the vibration energy through its own elastic deformation. The rigid limiting ring restricts the excessive deformation of the soft rubber column 6 through a gap of 0.1-0.3mm. At the same time, the high strength of the glass fiber reinforced nylon prevents the overall displacement of the buffer assembly. The six circumferentially evenly distributed buffer units form a three-dimensional anti-vibration structure to counteract multi-directional vibration.

[0017] The heat dissipation and airflow guiding structure 4 includes an inclined airflow guiding surface 11 located at the bottom of the motor mounting housing 1. The heat dissipation through holes are distributed circumferentially along the airflow guiding surface and avoid the projection area of ​​the soft rubber column 6.

[0018] The heat generated by the motor is transferred to the motor mounting housing 1. The inclined guide surface 11 at the bottom guides the airflow along the inclined surface. The 15°-30° angle design optimizes the airflow rate. The heat dissipation holes are distributed circumferentially along the guide surface and avoid the projection of the soft rubber column 6. This ensures that the airflow can efficiently remove heat through the holes and avoids the soft rubber column 6 from aging due to high temperature. The axis of the holes is perpendicular to the guide surface to further improve the heat dissipation efficiency.

[0019] Furthermore, the soft rubber column 6 is made of thermoplastic polyurethane, and the rigid limiting ring is made of glass fiber reinforced nylon, with a gap of 0.1-0.3mm between its inner wall and the outer wall of the soft rubber column 6.

[0020] The soft rubber column 6 is made of thermoplastic polyurethane (TPU). Utilizing its high elasticity, fatigue resistance and good damping characteristics, it absorbs vibration energy through the elastic deformation of molecular chains during vibration transmission, converting the rigid vibration of the motor into elastic deformation energy and dissipating it.

[0021] The rigid limiting ring is made of glass fiber reinforced nylon. The glass fiber reinforced nylon material has the characteristics of high strength, high rigidity and dimensional stability, providing a rigid limiting frame for the soft rubber column 6.

[0022] The 0.1-0.3mm inner wall gap design not only provides space for the elastic deformation of the soft rubber column 6 (to avoid excessive compression leading to buffer failure), but also limits the lateral displacement of the soft rubber column 6 (to prevent vibration caused by the shift of the motor's center of gravity).

[0023] Furthermore, the annular clamp 3 has two or more elastic slits 7 along its circumference, and its two ends are provided with mounting ears 9 with locking holes.

[0024] The annular clamp 3 has two or more elastic gaps 7 along its circumference. The elastic deformation of the material allows the inner diameter of the clamp to be adjustable, adapting to motor housings with different outer diameters. At the same time, the elastic gaps 7 can absorb the stress when the clamp is assembled with the motor housing, reducing secondary vibrations caused by rigid contact.

[0025] When the mounting ears 9 with locking holes at both ends are tightened by bolts, the lever principle is used to cause the clamp to contract radially, so that the motor housing and the annular groove on the inner wall of the clamp are tightly fitted together, forming a uniform circumferential clamping force.

[0026] Furthermore, the motor mounting housing 1 has a longitudinally extending groove 13 on its side wall, and the rigid limiting ring has a limiting key 12 that cooperates with the groove 13 on its outer wall.

[0027] The longitudinal groove 13 on the side wall of the motor mounting housing 1 forms a sliding fit with the limiting key 12 on the outer wall of the rigid limiting ring. During assembly, the limiting key 12 is embedded along the groove 13 to achieve circumferential positioning of the rigid limiting ring. During flight, the side wall of the groove 13 forms a circumferential constraint on the limiting key 12, preventing the rigid limiting ring from rotating circumferentially due to motor vibration, thereby avoiding fatigue damage to the soft rubber column 6 caused by torsional stress.

[0028] Furthermore, the inclined guide surface 11 has an angle of 15°-30° with the horizontal plane, and the axis of the heat dissipation through hole is perpendicular to the guide surface.

[0029] The inclined guide surface 11 forms an angle of 15°-30° with the horizontal plane, using aerodynamic principles to guide the airflow along the inclined surface to form a spiral upward airflow path, increasing the contact area between the airflow and the bottom of the casing. The axis of the heat dissipation through hole is perpendicular to the guide surface, allowing the airflow to pass through the through hole vertically, reducing airflow resistance and increasing the ventilation volume per unit time; at the same time, the through hole avoids the projection area of ​​the soft rubber column 6, preventing high-temperature airflow from blowing directly onto the soft rubber column 6.

[0030] Furthermore, it also includes a quick-release bolt 10 that passes through the locking hole, with a rotor clearance groove on its head.

[0031] The quick-release bolt 10 passes through the locking hole of the mounting ear 9 and adopts a threaded self-locking structure to achieve quick locking and unlocking. The rotor clearance groove on the bolt head is adapted to the contour of the rotor, allowing the bolt to be operated directly without disassembling the rotor, avoiding rotor interference during the assembly and disassembly process.

[0032] It should be further noted that the number of buffer units is 6.

[0033] The six buffer units are evenly distributed circumferentially, distributing the weight and vibration load of the motor evenly to each buffer unit, so that each unit bears 1 / 6 of the total load. The buffer units form a hexagonal support structure, which elastically constrains the motor from six directions, counteracting the multi-dimensional vibration of the motor in the radial, axial and circumferential directions.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A vibration damping and fixing structure for a drone motor, characterized in that, include: The motor mounting housing has an annular mounting groove on the top and heat dissipation holes on the bottom. A multi-level buffer assembly, comprising at least three buffer units evenly distributed circumferentially, each buffer unit including: A soft rubber column that passes through the annular mounting groove has a motor connection platform at its top. A rigid limiting ring is fitted around the outside of the soft rubber column. The rigid limiting ring is interference-fitted with the annular mounting groove, and its height is less than the free height of the soft rubber column. The ring clamp has an inner wall with an annular groove that matches the motor housing, and an outer wall with a locking protrusion that engages with the motor connecting platform. The heat dissipation and airflow guiding structure includes an inclined airflow guiding surface located at the bottom of the motor mounting housing, wherein the heat dissipation through holes are distributed circumferentially along the airflow guiding surface and avoid the projection area of ​​the soft rubber column.

2. The anti-vibration fixing structure for a drone motor according to claim 1, characterized in that: The soft rubber column is made of thermoplastic polyurethane, and the rigid limiting ring is made of glass fiber reinforced nylon. The gap between its inner wall and the outer wall of the soft rubber column is 0.1-0.3mm.

3. The anti-vibration fixing structure for a drone motor according to claim 1, characterized in that: The annular clamp has two elastic slits along its circumference, and its two ends are provided with mounting ears with locking holes.

4. The anti-vibration fixing structure for a drone motor according to claim 1, characterized in that: The motor mounting housing has a longitudinally extending groove on its side wall, and the rigid limiting ring has a limiting key on its outer wall that cooperates with the groove.

5. The anti-vibration fixing structure for a drone motor according to claim 1, characterized in that: The angle between the inclined guide surface and the horizontal plane is 15°-30°, and the axis of the heat dissipation through hole is perpendicular to the guide surface.

6. The anti-vibration fixing structure for a drone motor according to claim 3, characterized in that: It also includes quick-release bolts that pass through the locking hole, with rotor clearance grooves on their heads.

7. The anti-vibration fixing structure for a drone motor according to claim 1, characterized in that: The number of buffer units is 6.

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