Motor vibration reduction connecting device of unmanned aerial vehicle

Abstract

The invention relates to the technical field of unmanned aerial vehicles, and discloses an unmanned aerial vehicle motor vibration reduction connecting device which comprises a brushless motor, a cylindrical motor mounting shell and a wing, the cylindrical motor mounting shell is mounted at the far end of the wing, and the brushless motor is mounted in the cylindrical motor mounting shell; a top end clamping piece and a lower end clamping vibration absorption assembly are arranged at the top end and the bottom end in the cylindrical motor installation shell respectively, a bottom screwing cover is installed at the bottom end of the cylindrical motor installation shell, and the upper end face and the lower end face of the brushless motor are clamped between the top end clamping piece and the lower end clamping vibration absorption assembly respectively. According to the motor vibration reduction connecting device of the unmanned aerial vehicle, through reasonable structural design, vibration generated when the motor operates is effectively reduced, a stable working environment is provided for the motor, the service life of the motor is prolonged, the working efficiency of the motor is improved, and then the overall performance and flight stability of the unmanned aerial vehicle are improved.

Description

Technical Field

[0001] The invention relates to the technical field of unmanned aerial vehicles, and in particular to a motor vibration reduction connection device for unmanned aerial vehicles. Background Art

[0002] With the continuous development of science and technology, drones have been widely used in many fields, such as aerial photography, agricultural plant protection, power inspection, logistics distribution, etc. The performance and reliability of drones are crucial to whether they can successfully complete various tasks. The power source of drones mainly depends on motors, and the normal operation of motors is directly related to the flight status of drones.

[0003] Disadvantages of existing drone motor connection devices Vibration transmission affects motor stability In existing drone motor connection devices, the connection structure between the motor and the wing or fuselage often lacks an effective vibration reduction design. During the flight of the drone, the wings will vibrate due to factors such as airflow, and this vibration can be easily transmitted to the motor. The motor itself will also vibrate during operation, and the existing connection device cannot isolate these vibrations well, causing the motor to be in an unstable vibration environment when working. This will not only affect the service life of the motor, but may also cause the motor output power to be unstable, which in turn affects the flight performance of the drone. For example, the flight attitude is difficult to control accurately, and the expected effect cannot be achieved when performing high-precision tasks (such as fixed-point shooting in aerial photography).

[0004] Insufficient stability of the mounting structure Existing motor connection devices have defects in the stability of the installation structure. Some connection devices lack precise positioning design when fixing the motor, and the motor is prone to displacement or rotation in a long-term vibration environment. At the same time, most of the integrated vibration reduction structures are not effective enough for high-frequency vibration motors. Summary of the invention

[0005] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a motor vibration reduction connection device for an unmanned aerial vehicle to solve the above-mentioned problems.

[0006] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a motor vibration reduction connection device for an unmanned aerial vehicle, comprising a brushless motor, a cylindrical motor mounting shell and a wing, wherein the cylindrical motor mounting shell is mounted at the distal end of the wing, the brushless motor is mounted inside the cylindrical motor mounting shell, a top clamping piece and a lower clamping vibration absorbing assembly are respectively arranged at the top and bottom ends of the cylindrical motor mounting shell, a bottom screwing cover is installed at the bottom end of the cylindrical motor mounting shell, and the upper and lower end surfaces of the brushless motor are respectively clamped between the top clamping piece and the lower clamping vibration absorbing assembly; The top clamping member includes a metal washer and a shock-absorbing washer stacked up and down; The lower end clamping vibration absorbing assembly specifically includes the following structure: An annular pressing member pressed against the bottom end of the brushless motor; Six independent vibration absorbing components distributed at the bottom of the annular tightening member; A bottom positioning platform connected to the bottom ends of a plurality of the independent vibration absorbing components; The annular tightening member is composed of six fan-shaped tightening blocks, and the six fan-shaped tightening blocks are connected to the six independent vibration absorbing components in a one-to-one correspondence; An elastic connecting ring is installed inside the inner ring and the outer ring of the annular tightening member and connects the six fan-shaped tightening blocks into one.

[0007] As a preferred technical solution of the present invention, positioning columns are provided at four positions of front, back, left and right on the top of the metal gasket, and the four positioning columns are correspondingly inserted into the inside of four positioning holes provided at the top of the cylindrical motor mounting housing.

[0008] As a preferred technical solution of the present invention, the independent vibration absorbing component specifically includes the following structure: A fixing seat mounted on the top of the bottom positioning platform; A guide column installed on the top of the fixing seat; A guide sleeve installed at the bottom of the fan-shaped tightening block above, and the top of the guide column is slidably inserted into the interior of the guide sleeve; A vibration absorbing spring is sleeved on the outer side of the guide column and has upper and lower ends pressed tightly against the fixing seat and the lower end surface of the guide sleeve.

[0009] As a preferred technical solution of the present invention, a tightening boss is provided at the inner center of the bottom tightening cover, and the top end of the tightening boss is tightened against the bottom of the lower end clamping vibration absorbing assembly when the bottom tightening cover is tightened on the bottom end of the cylindrical motor mounting housing.

[0010] As a preferred technical solution of the present invention, the propeller arranged on the top of the brushless motor passes through the top of the cylindrical motor mounting housing.

[0011] As a preferred technical solution of the present invention, a plurality of heat dissipation holes are opened on the side of the cylindrical motor mounting housing, and the heat dissipation holes are located at the positions of the brushless motor.

[0012] Compared with the prior art, the present invention provides a motor vibration reduction connection device for a drone, which has the following beneficial effects: Reduce the impact of wing vibration on the motor: Installing the cylindrical motor mounting housing at the far end of the wing reduces the interference of wing vibration on the motor and provides a more stable working environment for the motor.

[0013] Provide a stable installation environment: The brushless motor is installed inside the cylindrical motor mounting housing to ensure the installation stability of the motor.

[0014] Effective vibration reduction: Vibration reduction of the top clamp: The shock-absorbing washer in the top clamp can absorb part of the vibration generated when the motor is running, reducing the transmission of vibration to the cylindrical motor mounting housing; the metal washer plays a role in enhancing support and fixation, and the positioning column on the top ensures that the top clamp is fixed in position to avoid rotation due to vibration, further stabilizing the mounting structure at the top of the motor.

[0015] Vibration reduction of the lower end clamping vibration absorption assembly: The annular tightening member is composed of six fan-shaped tightening blocks surrounded by a combination. Each fan-shaped tightening block independently tightens the bottom of the motor, and the vibration is transmitted to the corresponding independent vibration absorption assembly below it through the fan-shaped tightening block. In the independent vibration absorption assembly, the fan-shaped tightening block can be displaced along the guide column to a certain extent. The vibration absorption spring sleeved on the outside of the guide column will be compressed or stretched during the displacement of the fan-shaped tightening block, thereby absorbing the vibration energy and reducing the impact of the vibration at the bottom of the motor on the entire device. In addition, the elastic connecting ring connects the six fan-shaped tightening blocks into one, so that they can maintain a certain degree of synergy when subjected to vibration, share and absorb vibration together, and improve the overall vibration absorption effect of the lower end clamping vibration absorption assembly.

[0016] In summary, the motor vibration reduction connection device of the UAV effectively reduces the vibration generated during the operation of the motor through reasonable structural design, provides a stable working environment for the motor, improves the service life and working efficiency of the motor, and thus helps to improve the overall performance and flight stability of the UAV. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the half-cut structure of the present invention; Figure 3 This is a schematic diagram of internal explosion separation of the present invention; Figure 4 It is a schematic structural diagram of the top clamping member of the present invention; Figure 5 It is a structural schematic diagram of the lower end clamping vibration absorbing assembly of the present invention; Figure 6 It is a schematic diagram of the structure of the independent vibration absorbing component of the present invention; Figure 7 It is a schematic structural diagram of the annular tightening member of the present invention.

[0018] Among them: 1. Brushless motor; 2. Cylindrical motor mounting housing; 3. Bottom screw cap; 4. Top clamping piece; 5. Lower clamping vibration absorbing assembly; 6. Wing; 11. Propeller; 21. Positioning hole; 22. Heat dissipation hole; 31. Tighten the boss; 41. shock-absorbing washer; 42. metal washer; 43. positioning column; 51. Bottom positioning platform; 52. Independent vibration absorbing assembly; 53. Annular tightening member; 521, fixed seat; 522, guide column; 523, guide sleeve; 524, vibration absorbing spring; 531. Fan-shaped tightening block; 532. Elastic connecting ring. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0020] It should be noted that if the embodiments of the invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0021] In addition, "multiple" means more than two. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection required by the invention.

[0022] See also Figure 1-7, a motor vibration reduction connection device for an unmanned aerial vehicle, comprising a brushless motor 1, a cylindrical motor mounting housing 2 and a wing 6. In the actual implementation process, the cylindrical motor mounting housing 2 is installed at the far end of the wing 6. The selection of this installation position helps to reduce the impact of wing vibration on the motor. The brushless motor 1 is installed inside the cylindrical motor mounting housing 2, which provides a stable installation environment for the motor. The top and bottom ends of the cylindrical motor mounting housing 2 are respectively provided with a top clamping piece 4 and a lower clamping vibration absorbing assembly 5, and a bottom tightening cover 3 is installed at the bottom end of the cylindrical motor mounting housing 2. Through this design, the upper and lower end faces of the brushless motor 1 can be clamped between the top clamping piece 4 and the lower clamping vibration absorbing assembly 5, respectively, thereby achieving a stable installation of the motor and effectively reducing the vibration generated when the motor is running.

[0023] The top clamping member 4 includes a metal washer 42 and a shock-absorbing washer 41 stacked up and down. In actual operation, the metal washer 42 plays a role in strengthening support and fixing, while the shock-absorbing washer 41 can absorb part of the vibration generated when the motor is running, reducing the transmission of vibration to the cylindrical motor mounting housing 2. Positioning columns 43 are set at the four directions of the top of the metal washer 42, front, back, left, and right. These four positioning columns 43 are correspondingly inserted into the four positioning holes 21 set at the top of the cylindrical motor mounting housing 2. This design can ensure the accurate installation position of the top clamping member 4, improve the stability of the device, and prevent the clamping member from rotating.

[0024] The specific structure of the lower end clamping vibration absorption component 5 is as follows: first, there is an annular clamping member 53 that is clamped to the bottom end of the brushless motor 1, and the annular clamping member 53 is composed of six fan-shaped clamping blocks 531. Each fan-shaped clamping block 531 can independently clamp the bottom of the motor to ensure the stability of the motor in the vertical direction. Six independent vibration absorption components 52 are distributed at the bottom of the annular clamping member 53. The specific structure of these six independent vibration absorption components 52 is as follows: a fixed seat 521 is installed on the top of the bottom positioning platform 51, and the fixed seat 521 provides a solid foundation for the entire vibration absorption component. A guide column 522 is installed on the top of the fixed seat 521, and a guide sleeve 523 is installed at the bottom of the upper fan-shaped clamping block 531. The top of the guide column 522 is slidably inserted into the inside of the guide sleeve 523. This design enables the fan-shaped clamping block 531 to move along the guide column 522 to a certain extent when it is vibrated, thereby playing a role in buffering vibration. A vibration absorbing spring 524 is sleeved on the outside of the guide column 522, and the upper and lower ends of the vibration absorbing spring 524 are pressed tightly between the fixing seat 521 and the lower end surface of the guide sleeve 523. The vibration absorbing spring 524 can further absorb vibration energy and reduce the impact of motor vibration on the device. The six fan-shaped tightening blocks 531 and the six independent vibration absorbing components 52 are connected one by one. An elastic connecting ring 532 is installed inside the inner and outer rings of the annular tightening member 53 to connect the six fan-shaped tightening blocks 531 as a whole. The elastic connecting ring 532 can maintain a certain degree of coordination between the fan-shaped tightening blocks 531 to share and absorb vibration together.

[0025] A tightening boss 31 is provided at the inner center of the bottom tightening cover 3. When the bottom tightening cover 3 is tightened to the bottom end of the cylindrical motor mounting housing 2, the top end of the tightening boss 31 is pressed against the bottom of the lower clamping vibration absorbing assembly 5, thereby providing a stable supporting force for the lower clamping vibration absorbing assembly 5 and ensuring the tightness of the entire device.

[0026] The propeller 11 disposed on the top of the brushless motor 1 passes through the top of the cylindrical motor mounting housing 2, so that the propeller 11 rotates normally under the drive of the motor to provide power for the drone. A plurality of heat dissipation holes 22 are provided on the side of the cylindrical motor mounting housing 2, and these heat dissipation holes 22 are located at the position of the brushless motor 1, so that the heat generated by the generator during operation can be effectively dissipated, ensuring that the motor operates within the normal operating temperature range, and improving the service life and working efficiency of the motor.

[0027] Workflow: 1. Brushless motor generates vibration during operation The brushless motor 1 generates vibrations during operation, and the vibrations are transmitted to its mounting structure.

[0028] 2. Vibration absorption of the top clamp Initial vibration absorption of shock-absorbing washers The vibration of the top of the brushless motor 1 is first transmitted to the shock-absorbing washer 41 in the top clamp 4. The shock-absorbing washer 41 absorbs part of the vibration energy by its own material properties, reducing the transmission of vibration to the metal washer 42 and the cylindrical motor mounting housing 2.

[0029] Support and positioning of metal gaskets The metal gasket 42 plays a role in enhancing support and fixation under the shock-absorbing gasket 41. At the same time, the four positioning columns 43 on its top are inserted into the four positioning holes 21 at the top of the cylindrical motor mounting housing 2 to ensure that the top clamping part 4 is fixed in position to avoid rotation due to vibration, thereby further stabilizing the mounting structure at the top of the motor.

[0030] 3. Vibration absorption of the lower end clamping vibration absorption component Cooperative vibration absorption of annular top fastener and independent vibration absorption component The vibration at the bottom of the brushless motor 1 is transmitted to the annular top tightening member 53 in the lower end clamping vibration absorbing assembly 5. The annular top tightening member 53 is composed of six fan-shaped top tightening blocks 531 surrounded by a combination, each fan-shaped top tightening block 531 independently tightens the bottom of the motor, and when subjected to vibration, the vibration will be transmitted to the corresponding independent vibration absorbing assembly 52 below it through the fan-shaped top tightening block 531.

[0031] In the independent vibration absorbing assembly 52 , when the fan-shaped tightening block 531 is vibrated, the fan-shaped tightening block 531 can move along the guide column 522 to a certain extent because the top end of the guide column 522 is slidably inserted into the guide sleeve 523 at the bottom of the fan-shaped tightening block 531 .

[0032] At the same time, the upper and lower ends of the vibration absorbing spring 524 sleeved on the outside of the guide column 522 are respectively pressed between the fixing seat 521 and the lower end surface of the guide sleeve 523. The vibration absorbing spring 524 will be compressed or stretched during the displacement of the fan-shaped pressing block 531, thereby absorbing vibration energy and reducing the impact of the vibration at the bottom of the motor on the entire device.

[0033] Synergy of elastic connecting ring The elastic connecting ring 532 installed inside the inner and outer rings of the annular tightening member 53 connects the six fan-shaped tightening blocks 531 into one, so that the six fan-shaped tightening blocks 531 can maintain a certain degree of coordination when subjected to vibration, and jointly share and absorb vibration, thereby improving the overall vibration absorption effect of the lower end clamping vibration absorption assembly 5.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A motor vibration reduction connection device for an unmanned aerial vehicle, comprising a brushless motor (1), a cylindrical motor mounting housing (2) and a wing (6), characterized in that: The cylindrical motor mounting housing (2) is mounted at the far end of the wing (6), the brushless motor (1) is mounted inside the cylindrical motor mounting housing (2), a top clamping piece (4) and a bottom clamping vibration absorbing assembly (5) are respectively arranged at the top and bottom ends of the cylindrical motor mounting housing (2), a bottom screwing cover (3) is installed at the bottom end of the cylindrical motor mounting housing (2), and the upper and lower end surfaces of the brushless motor (1) are respectively clamped between the top clamping piece (4) and the bottom clamping vibration absorbing assembly (5); The top clamping member (4) comprises a metal washer (42) and a shock-absorbing washer (41) stacked up and down; The lower end clamping vibration absorbing assembly (5) specifically comprises the following structure: An annular pressing member (53) pressed against the bottom end of the brushless motor (1); Six independent vibration absorbing components (52) distributed at the bottom of the annular tightening member (53); A bottom positioning platform (51) connected to the bottom ends of a plurality of the independent vibration absorbing components (52); The annular tightening member (53) is composed of six fan-shaped tightening blocks (531) which are assembled in a surrounding manner, and the six fan-shaped tightening blocks (531) and the six independent vibration absorbing components (52) are connected in a one-to-one correspondence; An elastic connecting ring (532) is installed inside the inner ring and the outer ring of the annular tightening member (53) and connects the six fan-shaped tightening blocks (531) into one body.

2. The motor vibration reduction connection device for an unmanned aerial vehicle according to claim 1, characterized in that: Positioning posts (43) are provided at four positions, front, back, left, and right, on the top of the metal gasket (42); the four positioning posts (43) are correspondingly inserted into the insides of four positioning holes (21) provided at the top end of the cylindrical motor mounting housing (2).

3. The motor vibration reduction connection device for an unmanned aerial vehicle according to claim 1, characterized in that: The independent vibration absorbing component (52) specifically comprises the following structure: A fixing seat (521) mounted on the top of the bottom positioning platform (51); A guide column (522) mounted on the top of the fixing seat (521); A guide sleeve (523) is installed at the bottom of the upper fan-shaped tightening block (531), and the top end of the guide column (522) is slidably inserted into the interior of the guide sleeve (523); A vibration absorbing spring (524) is sleeved on the outside of the guide column (522) and has its upper and lower ends pressed tightly against the fixing seat (521) and the lower end surface of the guide sleeve (523).

4. The motor vibration reduction connection device for an unmanned aerial vehicle according to claim 1, characterized in that: A tightening boss (31) is provided at the inner center of the bottom tightening cover (3), and the top end of the tightening boss (31) is pressed against the bottom of the lower end clamping vibration absorbing assembly (5) when the bottom tightening cover (3) is tightened onto the bottom end of the cylindrical motor mounting housing (2).

5. The motor vibration reduction connection device for an unmanned aerial vehicle according to claim 1, characterized in that: The propeller (11) arranged on the top of the brushless motor (1) passes through the top of the cylindrical motor mounting housing (2).

6. The motor vibration reduction connection device for an unmanned aerial vehicle according to claim 1, characterized in that: A plurality of heat dissipation holes (22) are provided on the side of the cylindrical motor mounting housing (2), and the heat dissipation holes (22) are located at the positions where the brushless motor (1) is located.

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