Unmanned aerial vehicle engine output clutch

Abstract

The utility model relates to an unmanned plane engine output end clutch and particularly relates to an unmanned plane engine output end clutch. The unmanned plane engine output end clutch comprises a flyweight mounting seat, the middle part of the flyweight mounting seat is provided with an engine output shaft mounting hole, the periphery of the flyweight mounting seat is provided with a flyweight, and the outer side of the flyweight mounting seat is provided with a clutch shell. The front end of the flyweight is connected through a rotating shaft, the rear end of the flyweight is connected to the front end of another set of flyweights through a flyweight tension spring, the flyweight is provided with a roller guide plate, the roller guide plate and the flyweight are provided with guide grooves, the guide grooves are provided with rollers, the side of the roller is provided with a guide spring, and the other end of the guide spring is connected to the inner wall of the guide groove of the flyweight. The utility model has the positive effects of reducing the friction loss during clutch combination work, prolonging the service life of the clutch and improving the flight stability of the unmanned plane.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) engine clutch technology, and in particular to a UAV engine output clutch. Background Technology

[0002] Since the drone engine output clutch is a crucial component of the drone's power transmission system, it controls the power connection or disconnection between the engine and the transmission system through the engagement and disengagement of a rocker arm. Currently, such as Figure 6 As shown, the existing UAV engine output clutch includes a sprocket mounting base with three sets of sprockets around its perimeter. One end of each set of sprockets is connected by a rotating shaft, and the other end is fixed to the mounting base by sprocket tension springs. With this type of UAV engine output clutch, the sprockets and clutch housing only engage frictionally at a set engagement speed, allowing power connection between the engine and transmission system. Furthermore, because the UAV needs to switch between different engine speeds during flight to meet various flight requirements, the clutch sprockets and housing engage again with friction each time the speed changes. Therefore, this significantly reduces the clutch's lifespan and negatively impacts the UAV's flight stability. Utility Model Content

[0003] The purpose of this invention is to provide a clutch at the output end of a drone engine, so as to reduce frictional loss during clutch engagement and improve clutch service life.

[0004] The UAV engine output clutch provided by this utility model includes a sling block mounting base. The sling block mounting base has an engine output shaft mounting hole in the middle, and sling blocks are arranged around the periphery of the sling block mounting base. A clutch housing is arranged on the outer side of the sling block mounting base. The front end of the sling block is connected by a rotating shaft, and the rear end of the sling block is connected to the front end of another set of sling blocks by a sling block tension spring. A roller guide plate is arranged on the sling block. Guide grooves are arranged on the roller guide plate and the sling blocks, and rollers are arranged in the guide grooves. A guide spring is arranged on the side of the roller, and the other end of the guide spring is connected to the inner wall of the guide groove of the sling block.

[0005] Furthermore, a convex piece is provided in the middle of the sling block, and a check block is provided between the two convex pieces.

[0006] Furthermore, a check block spring is provided at the lower end of the check block. The check block includes a high check block and a low check block, which are connected together in a stepped structure.

[0007] Furthermore, the sling block mounting seat is mounted on the engine output shaft via the clutch bracket base plate, and the sling block mounting seat is equipped with a sling block and a check block; the clutch bracket base plate is mounted on the engine housing via bolt holes around its perimeter.

[0008] Furthermore, a check block cavity is provided at the lower end of the swing block mounting base, and a check block spring is provided inside the check block cavity.

[0009] Furthermore, the swing block mounting base is provided with three sets of swing blocks, and the three sets of swing blocks are connected end to end to form a ring structure by three swing block tension springs.

[0010] Furthermore, the engine output shaft mounting hole is provided with a positioning groove that is adapted to the engine output end.

[0011] The UAV engine output clutch provided by this utility model has the following beneficial effects: 1. The present invention features a roller guide plate on the throwing block, and guide grooves on both the roller guide plate and the throwing block, with rollers installed within the guide grooves. When the clutch reaches the set speed and engages, the centrifugal rotation of the throwing block drives the rollers to move within the guide grooves and engage with the clutch housing. Simultaneously, a check block pops out, ensuring that the throwing block cannot return. The rollers and clutch housing remain engaged, enabling power connection between the engine and the transmission system, ensuring accurate ignition and normal start-up of the drone.

[0012] 2. The roller of this invention is provided with a guide spring on its side, and the other end of the guide spring is connected to the inner wall of the guide groove of the sling block. Under the action of the guide spring, the roller can be positioned near the center of the sling block. At the same time, under the action of the check block, it is pressed tightly against the clutch housing, reducing frictional loss during clutch engagement, meeting the requirements for long-term use, and improving the service life of the clutch.

[0013] 3. The lower end of the check block of this utility model is provided with a check block spring. The check block includes a high check block and a low check block, which are arranged in a stepped structure. The check block prevents the clutch at the output end of the UAV engine from disengaging. The action position of the check block can be set according to the speed requirements, which is highly adjustable. Unlike traditional clutches, it does not re-engage due to friction, thus improving the service life of the clutch and enhancing the flight stability of the UAV.

[0014] When the set rotational speed is reached, the rotating block drives the roller to move within the guide groove and engage with the clutch housing. Simultaneously, the check block pops out, preventing the rotating block from returning. The roller and clutch housing remain engaged, ensuring the power connection between the engine and transmission system and guaranteeing accurate ignition and normal starting. Furthermore, the check block keeps the roller and clutch housing in a pressed engagement state, preventing disengagement after clutch engagement. This reduces frictional loss during clutch operation, meeting the requirements for long-term use and extending clutch lifespan. Therefore, this invention effectively reduces frictional loss during clutch engagement, extends clutch lifespan, and improves the flight stability of the UAV. Attached Figure Description

[0015] The accompanying drawings disclose specific embodiments of this utility model, wherein, Figure 1 This is a schematic diagram of the clutch of this utility model when it is not engaged; Figure 2 This is a cross-sectional view of the clutch of this utility model when it is not engaged; Figure 3 This is a schematic diagram of the clutch of this utility model when engaged; Figure 4 This is a cross-sectional view of the clutch of this utility model when engaged; Figure 5 This is a diagram showing the usage state of this utility model; Figure 6 This is a schematic diagram of the existing clutch at the output end of a drone engine; Figure label: 1. Clutch bracket base plate; 11. Clutch housing; 12. Bolt fixing holes; 2. Swing block mounting base; 21. Check block cavity; 22. Engine output shaft mounting hole; 23. Positioning groove; 3. Throwing block; 31. Rotating shaft; 32. Throwing block tension spring; 33. Throwing block protrusion; 4. Roller guide plate; 41. Guide groove; 42. Roller; 43. Guide spring; 5. Check block; 51. High check block; 52. Low check block; 53. Check block spring. Detailed Implementation

[0016] like Figure 1-4As shown, the UAV engine output clutch provided by this utility model includes a sling block mounting base 2, an engine output shaft mounting hole 22 is provided in the middle of the sling block mounting base 2, sling blocks 3 are provided around the periphery of the sling block mounting base 2, and a clutch housing 11 is provided on the outer side of the sling block mounting base 2; the front end of the sling block 3 is connected by a rotating shaft 31, and the rear end of the sling block 3 is connected to the front end of another set of sling blocks 3 by a sling block tension spring 32; a roller guide plate 4 is provided on the sling block 3; a guide groove 41 is provided on the roller guide plate 4 and the sling block 3, and a roller 42 is provided in the guide groove 41; a guide spring 43 is provided on the side of the roller 42, and the other end of the guide spring 43 is connected to the inner wall of the guide groove 41 of the sling block 3.

[0017] like Figure 5 As shown, in use, the first step is to install the output shaft of the UAV engine into the engine output shaft mounting hole 22, and then fix the sling block mounting seat 2 to the clutch bracket base plate 1 of the UAV engine using fixing bolts. Next, after installing the clutch housing 11, the propeller is installed using the propeller mounting seat, and the installed UAV engine is then installed in the launch box. Finally, the UAV engine output clutch is activated, the roller 42 moves within the guide groove 41, compressing the guide spring 43, and the sling block 3 undergoes centrifugal motion. When the speed reaches 2000-3000 rpm, the roller 42 engages with the clutch housing 11, enabling power connection between the engine and the transmission system. This ensures correct ignition and normal start-up of the UAV, improving its starting efficiency. Simultaneously, under the action of the guide spring 43, the roller 42 is positioned near the center of the sling block 3, in a pressed engagement state with the clutch housing 11, reducing frictional loss during clutch engagement, meeting long-term use requirements, and extending clutch lifespan.

[0018] like Figure 1-4 As shown, a convex lug 33 is provided in the middle of the sling block 3, and a check block 5 is provided between the two convex lugs 33. The UAV engine output clutch provided by this utility model uses high-strength wear-resistant materials for the roller 42 and the clutch housing 11. When starting below the clutch engagement speed, the engine clutch is not engaged. When the clutch reaches the set speed and engages, the centrifugal rotation of the sling block 3 drives the roller 42 to move in the guide groove 41 and engage with the clutch housing 11. At the same time, the check block 5 pops out, ensuring that the sling block 3 cannot return, and the roller 42 and the clutch housing 11 are always engaged, which can ensure the power connection between the engine and the transmission system and ensure that the UAV starts normally and ignites correctly.

[0019] like Figure 2 , 4As shown, a check block spring 53 is provided at the lower end of the check block 5. The check block 5 includes a high check block 51 and a low check block 52, which are connected together in a stepped structure. The check block 5 prevents the clutch at the output end of the UAV engine from disengaging. The action position of the check block can be set according to the speed requirements of different types of engines, making it highly adjustable. Unlike traditional clutches, it does not re-engage due to friction, thus improving the clutch's service life and the UAV's flight stability.

[0020] like Figure 1-5 As shown, the clutch mounting base 2 is mounted on the engine output shaft via the clutch bracket base plate 1. The clutch mounting base 2 is equipped with a clutch block 3 and a check block 5. The clutch bracket base plate 1 is mounted on the engine housing via bolt holes 12 around its perimeter. The clutch mounting base 2 is mounted on the engine output shaft via the clutch bracket base plate 1; fixing bolts pass through the bolt holes 12 to mount the clutch bracket base plate 1 onto the engine housing, facilitating installation and improving installation efficiency.

[0021] like Figure 2 , 4 As shown, a check block cavity 21 is provided at the lower end of the swing block mounting base 2, and a check block spring 53 is provided inside the check block cavity 21. The check block spring 53 can eject the check block 5, preventing the swing block 3 from returning, thus ensuring the power connection between the engine and the transmission system and ensuring correct ignition and normal starting.

[0022] like Figure 1 , 3 As shown, three sets of swing blocks 3 are provided on the swing block mounting base 2. The three sets of swing blocks 3 are connected end to end to form a ring structure by three swing block tension springs 32. When the clutch at the output end of the UAV engine is started, the swing blocks 3 perform centrifugal motion. When the speed reaches 2000-3000 revolutions per minute, the rollers 42 engage with the clutch housing 11.

[0023] like Figure 1-4 As shown, a positioning groove 13 is provided on the engine output shaft mounting hole 22 to match the engine output end. The positioning groove 13 facilitates the quick installation of the UAV engine output shaft into the engine output shaft mounting hole 22, making installation convenient and improving installation efficiency.

[0024] The installation, connection, or setting methods of all the above components are common mechanical methods, such as welding, threaded connection, screw connection, etc., and the specific structure, model, and coefficient indicators of all components are their own technologies. As long as they can achieve their beneficial effects, they can be implemented.

[0025] The technical solution of this utility model is not limited to the scope of this utility model. All technical contents not described in detail in this utility model are known technologies.

Claims

1. A clutch for the output end of an unmanned aerial vehicle (UAV) engine, comprising a sling block mounting seat (2), wherein the sling block mounting seat (2) has an engine output shaft mounting hole (22) in the middle, sling blocks (3) are provided around the periphery of the sling block mounting seat (2), and a clutch housing (11) is provided on the outer side of the sling block mounting seat (2); characterized in that, The front end of the swing block (3) is connected by a rotating shaft (31), and the rear end of the swing block (3) is connected to the front end of another set of swing blocks (3) by a swing block tension spring (32). A roller guide plate (4) is provided on the swing block (3). A guide groove (41) is provided on the roller guide plate (4) and the swing block (3). A roller (42) is provided in the guide groove (41). A guide spring (43) is provided on the side of the roller (42), and the other end of the guide spring (43) is connected to the inner wall of the guide groove (41) of the swing block (3).

2. The UAV engine output clutch of claim 1, wherein, The middle of the throwing block (3) is provided with a throwing block protrusion (33), and a check block (5) is provided between the two throwing block protrusions (33).

3. The UAV engine output clutch of claim 2, wherein, The lower end of the check block (5) is provided with a check block spring (53). The check block (5) includes a high check block (51) and a low check block (52). The high check block (51) and the low check block (52) are connected together in a stepped structure.

4. The UAV engine output clutch of claim 1, wherein, The sling block mounting seat (2) is mounted on the engine output shaft via the clutch bracket base plate (1), and the sling block mounting seat (2) is provided with a sling block (3) and a check block (5); the clutch bracket base plate (1) is mounted on the engine housing via bolt fixing holes (12) around the perimeter.

5. The UAV engine output clutch of claim 1, wherein, The lower end of the swing block mounting base (2) is provided with a check block cavity (21), and a check block spring (53) is provided inside the check block cavity (21).

6. The UAV engine output clutch of claim 1, wherein, The swing block mounting base (2) is provided with three sets of swing blocks (3), and the three sets of swing blocks (3) are connected end to end to form a ring structure by three swing block tension springs (32).

7. The UAV engine output clutch of claim 1, wherein, The engine output shaft mounting hole (22) is provided with a positioning groove (13) that is adapted to the engine output end.

Images