A front wheel turning steering engine of a drone

Abstract

The utility model relates to the field of aerospace technology discloses a unmanned aerial vehicle front wheel turning rudder machine, including the shell, the outside fixed connection of shell has two connecting blocks, two the inside sliding connection of connecting block all have two sliding columns, two the inside sliding connection of sliding column all have pull rod, the bottom fixed connection of pull rod has the connecting plate, the top fixed connection of connecting plate has the spring, the bottom fixed connection of connecting plate has two connecting rods, two the bottom fixed connection of connecting rod all have the sliding block, the outside rotation connection of sliding block has the rotary lever, the other end rotation connection of rotary lever has the ejection block. In the utility model, pull rod makes spring energy storage, drive the ejection block to shrink and go up, release pull rod after loading into the sliding column, spring reset makes the ejection block to be stuck into the recess, complete rudder machine installation, and the device simplifies assembly and is convenient for maintenance.

Description

Technical Field

[0001] This utility model relates to the field of aerospace technology, and in particular to a steering servo for the front wheel of an unmanned aerial vehicle. Background Technology

[0002] The steering servo of the drone's front wheel is a key actuator controlling the steering of the front wheel. It is primarily responsible for receiving commands from the flight control system and driving the front wheel to complete the steering action, ensuring directional control of the drone during ground taxiing. Adapting to different drone models' front wheel structures, it needs to possess suitable torque and rotation angle to ensure precise steering. Simultaneously, it must be able to withstand complex ground environments, exhibiting a certain degree of vibration resistance and temperature resistance. Working in conjunction with the flight control and power systems, it enhances ground taxiing stability and safety, serving as a crucial guarantee for the drone's ground maneuverability.

[0003] The drone's front wheel turning servo drives mechanical movements based on electrical signals. The flight control system sends turning commands according to ground taxiing requirements. After receiving the commands, the servo's internal circuitry converts the signals into corresponding currents, driving the motor to operate. The motor amplifies the torque through a reduction gear set, driving the output shaft to rotate, which in turn links the linkage or transmission mechanism to control the front wheel to deflect to a specified angle. At the same time, the servo's built-in position sensor provides real-time feedback on the turning angle, compares it with the commands, and makes corrections to ensure precise response of the front wheel to control and achieve stable adjustment of the ground direction.

[0004] In existing technologies, the installation of some UAV front wheel turning servos is quite complex, which leads to prolonged installation time and affects the overall assembly efficiency. If the operation is not done properly during the installation process, problems such as component docking deviation and insecure fixing may occur, which in turn cause poor coordination between the servo and the front wheel transmission mechanism, resulting in malfunctions such as steering lag and inaccurate angle, affecting the stability of ground gliding. Therefore, a UAV front wheel turning servo is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a front wheel turning servo for unmanned aerial vehicles (UAVs). It aims to improve the problem that some UAV front wheel turning servos in the prior art are complicated to install, resulting in long installation time and affecting the overall assembly efficiency. Improper operation during installation can lead to component misalignment and insecure fixing, which in turn causes poor coordination between the servo and the front wheel transmission mechanism, resulting in steering lag, inaccurate angles, and other faults, affecting the stability of ground gliding.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A front wheel turning servo for a drone includes a housing. Two connecting blocks are fixedly connected to the outer side of the housing. Two sliding columns are slidably connected inside each of the two connecting blocks. A pull rod is slidably connected inside each of the two sliding columns. A connecting plate is fixedly connected to the bottom end of the pull rod. A spring is fixedly connected to the top end of the connecting plate. Two connecting rods are fixedly connected to the bottom end of the connecting plate. A sliding block is fixedly connected to the bottom end of each of the two connecting rods. A rotating rod is rotatably connected to the outer side of each sliding block. A push-out block is rotatably connected to the other end of the rotating rod. A support block is slidably connected to the outer side of the sliding block. A sealing component is provided on the outer side of the housing to prevent moisture, dust, and other substances from entering the device.

[0008] As a further description of the above technical solution:

[0009] The sealing assembly includes two supports, the outer sides of which are fixedly connected to the outer side of the housing. An electric push rod is fixedly connected inside each of the two supports. A moving column is fixedly connected to the drive end of each electric push rod. Multiple trapezoidal blocks are fixedly connected to the outer side of each moving column. A slider is slidably connected to the outer side of each trapezoidal block. A support plate is fixedly connected to the outer side of each slider. An mounting block is installed on the outer side of the support plate. A base plate is fixedly connected to the bottom end of the support plate. A moving block is fixedly connected to the bottom end of the base plate. A slide rail is slidably connected to the outer side of the moving block. A fixing ring is slidably connected to the outer side of the moving column. A sealing ring is fixedly connected to the top of the housing. A top cover is fixedly connected to the adjacent side of the mounting block.

[0010] As a further description of the above technical solution:

[0011] The other end of the spring is fixedly connected to the outside of the pull rod, and the outside of the support block is fixedly connected to the inside of the connecting block;

[0012] As a further description of the above technical solution:

[0013] The outer side of the ejector block is slidably connected to the inside of the support block, and the bottom end of the connecting plate is fixedly connected to the top end of the support block;

[0014] As a further description of the above technical solution:

[0015] The sliding column has two grooves inside, and the outer side of the ejector block is slidably connected to the inside of the grooves;

[0016] As a further description of the above technical solution:

[0017] The outer side of the base plate is slidably connected to the inside of the mounting block, and the outer side of the fixing ring is fixedly connected to the inside of the support;

[0018] As a further description of the above technical solution:

[0019] The top end of the sealing ring contacts the top end of the top cover, and the top end of the support contacts the bottom end of the mounting block.

[0020] As a further description of the above technical solution:

[0021] The slider has a sliding groove inside, and the outer side of the trapezoidal block is slidably connected to the inside of the sliding groove.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, when the pull rod is pulled, the spring undergoes elastic deformation to store potential energy. At the same time, it drives the rotating rod to move through the connecting plate, connecting rod and sliding block, causing the ejector block to retract and move upward. After the sliding column is installed into the mounting hole, the pull rod is released, the spring releases potential energy to drive the component to reset, and the ejector block is inserted into the UAV groove to complete the servo motor installation. This simplifies the assembly process, improves efficiency, and facilitates later maintenance and replacement.

[0024] 2. In this utility model, after the electric push rod is started, the moving column drives the trapezoidal block to slide, causing the slider to expand outward. The support plate is guided by the slide rail to be pushed outward into the mounting block slot, realizing a tight connection between the support and the mounting block, and pressing the sealing ring. This sealing structure can effectively prevent dust, water, and oil stains, avoid rust, jamming or short circuit, and at the same time reduce the impact of temperature fluctuations and extend the service life of the servo motor. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a UAV front wheel turning servo motor proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the connecting block of the front wheel turning servo of an unmanned aerial vehicle (UAV) proposed in this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 for Figure 1 Enlarged view of point B in the middle.

[0029] Legend:

[0030] 1. Outer shell; 2. Connecting block; 3. Sliding column; 4. Pull rod; 5. Connecting plate; 6. Spring; 7. Connecting rod; 8. Sliding block; 9. Rotating rod; 10. Ejecting block; 11. Support block; 12. Support; 13. Electric push rod; 14. Moving column; 15. Trapezoidal block; 16. Sliding block; 17. Support plate; 18. Base plate; 19. Moving block; 20. Slide rail; 21. Fixing ring; 22. Mounting block; 23. Sealing ring; 24. Top cover. Detailed Implementation

[0031] 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.

[0032] Reference Figures 1 to 3 This utility model provides an embodiment of a drone front wheel turning servo, including a housing 1. The housing 1 serves as the basic frame of the entire drone front wheel turning servo, providing overall support and protection, integrating the internal components, and providing a stable installation environment. Two connecting blocks 2 are fixedly connected to the outer side of the housing 1. The connecting blocks 2 are components that connect the housing 1 to the drone, providing space for the installation and movement of components such as the sliding column 3 and the support block 11, and serving a connection and load-bearing function.

[0033] Both connecting blocks 2 have two sliding pillars 3 internally connected, whose internal grooves cooperate with the ejector block 10 to fix and adjust their positions, providing a basis for adjusting the installation position of the servo motor. Both sliding pillars 3 have a pull rod 4 internally connected, which can slide inside the sliding pillar 3. Through its connection with the connecting plate 5, the pull rod 4 transmits external force to the connecting rod 7, while the spring 6 connected to its outer side also relies on it for elasticity. The bottom end of the pull rod 4 is fixedly connected to the connecting plate 5, which connects the pull rod 4, spring 6, connecting rod 7, and support block 11, transmitting the movement of the pull rod 4 to the connecting rod 7 and also providing a force point for the spring 6.

[0034] A spring 6 is fixedly connected to the top of the connecting plate 5. The spring 6 has an elastic return function. When the pull rod 4 is moved by force, the spring 6 will deform and store elastic potential energy. After the force disappears, it can drive the pull rod 4 to return to its original position, ensuring the cyclic operation of the device. Two connecting rods 7 are fixedly connected to the bottom of the connecting plate 5. The connecting rods 7 are the components that connect the connecting plate 5 and the sliding block 8. They can transmit the movement of the connecting plate 5 to the sliding block 8, realize the longitudinal transmission of force, and ensure the continuity of movement. The bottom ends of the two connecting rods 7 are fixedly connected to the sliding blocks 8. The sliding blocks 8 can slide within the support block 11. At the same time, the rotating rod 9 connected to its outer side can drive the ejector block 10 to move. It is the key component that converts the longitudinal movement of the connecting rods 7 into the lateral movement of the ejector block 10.

[0035] A rotating rod 9 is rotatably connected to the outer side of the sliding block 8. The rotating rod 9 serves to change the direction of motion, converting the sliding of the sliding block 8 into its own rotation, which in turn drives the ejector block 10 to slide, thus changing the direction of force. The other end of the rotating rod 9 is rotatably connected to the ejector block 10. The ejector block 10, through its engagement with the internal groove of the sliding column 3, can fix the position of the sliding column 3. When the ejector block 10 slides into the groove, the sliding column 3 is fixed; when it slides out of the groove, the sliding column 3 can freely adjust its position. A support block 11 is slidably connected to the outer side of the sliding block 8. The support block 11 provides a track for the installation and sliding of the sliding block 8 and the ejector block 10, limiting the range of motion of these components and ensuring that they move along a predetermined trajectory. The outer side of the outer casing 1 is provided with a sealing component to prevent moisture, dust, and other substances from entering the device.

[0036] Reference Figure 1 , Figure 2 , Figure 4 The sealing assembly includes two supports 12, the outer sides of which are fixedly connected to the outer side of the housing 1. The supports 12 serve as the basic support components of the sealing assembly, and their external fixation to the housing 1 provides a stable mounting platform for the electric push rod 13 and the retaining ring 21, ensuring that these components do not shift position during operation. The electric push rod 13 is fixedly connected inside each of the two supports 12. The electric push rod 13 is the power source for the sealing assembly; through the telescopic movement of its drive end, it can drive the moving column 14 to move up and down, providing power support for the operation of the entire sealing assembly.

[0037] A movable column 14 is fixedly connected to the drive end of the electric push rod 13. Driven by the electric push rod 13, the movable column 14 moves up and down. Multiple trapezoidal blocks 15 fixed to its outer side move synchronously with the movement of the movable column 14, thereby pushing the slider 16 to displacement and transmitting power. Multiple trapezoidal blocks 15 are fixedly connected to the outer side of the movable column 14. Utilizing their trapezoidal structure, the trapezoidal blocks 15 can engage with the sliding groove inside the slider 16 as they move with the movable column 14, converting the up-and-down movement of the movable column 14 into the horizontal movement of the slider 16. Sliding sliders 16 are slidably connected to the outer side of each trapezoidal block 15. The sliders 16 can slide horizontally under the push of the trapezoidal blocks 15, and the support plates 17 connected to their outer sides move with the movement of the sliders 16.

[0038] A support plate 17 is fixedly connected to the outer side of the slider 16. The support plate 17 is an actuator that connects to the mounting block 22. The support plate 17 is engaged inside the mounting block 22 to achieve connection with it. The mounting block 22 is mounted on the outer side of the support plate 17. The mounting block 22 is a component that connects the support plate 17 and the top cover 24. It moves under the drive of the support plate 17, thereby achieving the contact or separation of the top cover 24 from the outer shell 1. A base plate 18 is fixedly connected to the bottom end of the support plate 17. The base plate 18 provides a mounting platform for the movable block 19.

[0039] A movable block 19 is fixedly connected to the bottom end of the base plate 18. The movable block 19 can slide within the slide rail 20 and moves synchronously with the movement of the base plate 18. Through its cooperation with the slide rail 20, it restricts the movement direction of the base plate 18 and the support plate 17, ensuring that they move along a fixed trajectory. The slide rail 20 is slidably connected to the outer side of the movable block 19. The slide rail 20 provides a sliding track for the movable block 19 and limits its movement path, thereby indirectly ensuring the accuracy and stability of the movement of components such as the support plate 17 and the mounting block 22.

[0040] A retaining ring 21 is slidably connected to the outer side of the movable column 14, and a sealing ring 23 is fixedly connected to the top of the outer shell 1. When the top cover 24 is in contact with the outer shell 1, the sealing ring 23 is compressed, which can fill the gap between the top cover 24 and the outer shell 1, enhance the sealing performance of the device, and effectively prevent moisture, dust and other substances from entering. The top cover 24 is fixedly connected to the side of the mounting block 22. Under the action of the mounting block 22, the top cover 24 can be in contact with the outer shell 1, forming a closed space with the sealing ring 23 to prevent external debris from entering the device and also to protect the internal components.

[0041] Reference Figures 2 to 4The other end of spring 6 is fixedly connected to the outside of pull rod 4. Pull rod 4 and connecting plate 5 work together to achieve the stretching and compression of spring 6. The outside of support block 11 is fixedly connected to the inside of connecting block 2, providing stable support for its internal components. The outside of ejector block 10 is slidably connected to the inside of support block 11, providing a sliding track for ejector block 10 to move along a predetermined direction. The bottom end of connecting plate 5 is fixedly connected to the top end of support block 11. Two grooves are formed inside sliding column 3. The outside of ejector block 10 is slidably connected to the inside of the grooves, which provide a sliding outlet for ejector block 10, allowing it to be ejected and retracted.

[0042] The outer side of the base plate 18 is slidably connected to the inside of the mounting block 22, and the outer side of the retaining ring 21 is fixedly connected to the inside of the support 12. The top end of the sealing ring 23 contacts the top end of the top cover 24, and the top cover 24 and the outer shell 1 work together to protect the internal components. The top end of the support 12 contacts the bottom end of the mounting block 22. The slider 16 has a sliding groove inside, and the outer side of the trapezoidal block 15 is slidably connected to the inside of the sliding groove. The sliding groove provides a track for the movement of the trapezoidal block 15, allowing it to move in a predetermined direction.

[0043] Working principle: Pulling lever 4 causes it to move, which in turn moves spring 6, causing it to elastically deform and store elastic potential energy. Simultaneously, the movement of lever 4 also moves connecting plate 5, which in turn moves connecting rod 7. This causes connecting rod 7 to move sliding block 8 upwards. Sliding block 8 transmits this motion to rotating rod 9, causing rotating rod 9 to move ejector block 10 inwards and then upwards. At this point, sliding post 3 is installed into the mounting hole aligned with the inside of connecting block 2. Releasing lever 4 removes the force applied to the outside of spring 6, causing spring 6 to release its internal elastic potential energy and return a series of components to their original positions. Ejector block 10 then engages with the groove inside the drone, completing the installation of the servo motor. This shortens the installation time of the servo motor and related components, reduces time-consuming and error-prone processes due to complex connections, and improves assembly efficiency. Furthermore, it makes disassembly and reconnection easier during later maintenance or component replacement, reducing maintenance difficulty and costs.

[0044] When the electric push rod 13 is activated, it begins to move and drives the movable column 14 fixedly connected to its drive end to move. The movement of the movable column 14 causes the trapezoidal block 15 to slide on the outside of the slider 16, causing the slider 16 to expand outward. The slider 16 moves along with the support plate 17. The movable block 19 fixed at the bottom of the support plate 17 works in conjunction with the slide rail 20 to limit the support plate 17, so that the support plate 17 can be pushed outward into the slot of the mounting block 22, so that the support 12 and the mounting block 22 are tightly connected, and the sealing ring 23 is pressed to achieve a seal for the device. This effectively prevents external impurities such as dust, water vapor, and oil from entering the inside of the servo motor, avoiding problems such as rust, jamming, or short circuits caused by contamination. At the same time, it can reduce the impact of drastic changes in external ambient temperature on the servo motor, maintain its stable internal working state, and extend the service life of the servo motor.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steering servo for the front wheel of an unmanned aerial vehicle, comprising a housing (1), characterized in that: Two connecting blocks (2) are fixedly connected to the outer side of the outer shell (1). Two sliding columns (3) are slidably connected inside the two connecting blocks (2). A pull rod (4) is slidably connected inside the two sliding columns (3). A connecting plate (5) is fixedly connected to the bottom end of the pull rod (4). A spring (6) is fixedly connected to the top end of the connecting plate (5). Two connecting rods (7) are fixedly connected to the bottom end of the connecting plate (5). A sliding block (8) is fixedly connected to the bottom end of the two connecting rods (7). A rotating rod (9) is rotatably connected to the outer side of the sliding block (8). A push-out block (10) is rotatably connected to the other end of the rotating rod (9). A support block (11) is slidably connected to the outer side of the sliding block (8). A sealing component is provided on the outer side of the outer shell (1) to prevent moisture and dust from entering the device.

2. The UAV front wheel turning servo according to claim 1, characterized in that: The sealing assembly includes two supports (12), the outer sides of which are fixedly connected to the outer side of the housing (1). An electric push rod (13) is fixedly connected inside each of the two supports (12). A moving column (14) is fixedly connected to the driving end of each electric push rod (13). Multiple trapezoidal blocks (15) are fixedly connected to the outer side of each moving column (14). A slider (16) is slidably connected to the outer side of each trapezoidal block (15). A support plate is fixedly connected to the outer side of each slider (16). (17) An installation block (22) is installed on the outside of the support plate (17). A base plate (18) is fixedly connected to the bottom end of the support plate (17). A moving block (19) is fixedly connected to the bottom end of the base plate (18). A slide rail (20) is slidably connected to the outside of the moving block (19). A fixing ring (21) is slidably connected to the outside of the moving column (14). A sealing ring (23) is fixedly connected to the top end of the outer shell (1). A top cover (24) is fixedly connected to the side of the installation block (22).

3. The UAV front wheel turning servo according to claim 1, characterized in that: The other end of the spring (6) is fixedly connected to the outside of the pull rod (4), and the outside of the support block (11) is fixedly connected to the inside of the connecting block (2).

4. The UAV front wheel turning servo according to claim 1, characterized in that: The outer side of the ejector block (10) is slidably connected to the inside of the support block (11), and the bottom end of the connecting plate (5) is fixedly connected to the top end of the support block (11).

5. A steering servo for the front wheel of an unmanned aerial vehicle according to claim 1, characterized in that: The sliding column (3) has two grooves inside, and the outer side of the ejector block (10) is slidably connected to the inside of the grooves.

6. A steering servo for the front wheel of an unmanned aerial vehicle according to claim 2, characterized in that: The outer side of the base plate (18) is slidably connected to the inside of the mounting block (22), and the outer side of the fixing ring (21) is fixedly connected to the inside of the support (12).

7. A steering servo for the front wheel of an unmanned aerial vehicle according to claim 2, characterized in that: The top end of the sealing ring (23) is in contact with the top end of the top cover (24), and the top end of the support (12) is in contact with the bottom end of the mounting block (22).

8. A steering servo for the front wheel of an unmanned aerial vehicle according to claim 2, characterized in that: The slider (16) has a sliding groove inside, and the outer side of the trapezoidal block (15) is slidably connected to the inside of the sliding groove.

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