Unmanned aerial vehicle propeller blade mounting structure

Abstract

The utility model discloses an unmanned aerial vehicle propeller blade installation structure which comprises a driving part and a driving shaft, the driving shaft is arranged at the top of the driving part, the driving part is arranged at the top of an unmanned aerial vehicle, a fixing ring is arranged on the driving shaft in a sleeved mode, and bosses are arranged on the front end face and the rear end face of the fixing ring. The fixing ring is arranged on the driving shaft in a sleeving mode, the two connecting pieces are arranged at the front end and the rear end of the fixing ring and used for being fixedly connected with the fixing part, then the fixing part is fixedly connected with the driving shaft, the driving part at the top of the unmanned aerial vehicle drives the driving shaft and the fixing part to rotate, and therefore the unmanned aerial vehicle can be driven to rotate. The blades arranged on the fixing part rotate to generate wind power to drive the unmanned aerial vehicle to move, the springs are arranged between the blades and the clamping grooves of the mounting head, the blades are limited and adjusted through the springs, the angles of the blades are adjusted in real time in the rotating process, meanwhile, abrasion caused by contact friction between the blades and the inner walls of the clamping grooves is prevented, and the buffering effect is good.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) technology, and in particular to a UAV propeller blade mounting structure. Background Technology

[0002] Unmanned aerial vehicles (UAVs) are aircraft controlled using radio remote control equipment and their own program control devices. They are currently widely used in aerial photography, agriculture, plant protection, miniature selfies, express delivery, disaster relief, wildlife observation, infectious disease monitoring, surveying, and news reporting.

[0003] Most drones on the market currently use one-piece screw-fastened propellers. One-piece screw-fastened propellers are more troublesome to install and disassemble, and the blades are prone to friction with the connection point during use, causing wear and affecting the lifespan of the blades.

[0004] Therefore, it is necessary to provide a drone propeller mounting structure to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a drone propeller blade mounting structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a drone propeller blade mounting structure, comprising a drive unit and a drive shaft, wherein the drive shaft is disposed on the top of the drive unit, the drive unit is disposed on the top of the drone, a fixing ring is sleeved on the drive shaft, and both the front and rear ends of the fixing ring are provided with bosses, the front of the bosses are provided with connecting holes and two first threaded holes, a first locking bolt is inserted into the connecting hole, the first locking bolt passes through the outer circumferential surface of the drive shaft, both the front and rear ends of the fixing ring are provided with connecting pieces, both ends of the connecting pieces are provided with two third locking holes, both ends of the two connecting pieces are provided with fixing parts, the end of the fixing part away from the connecting piece is provided with a propeller blade, the fixing part includes an mounting head and a clamping head, the side wall of the clamping head is provided with a protrusion, the front of the protrusion is provided with two fifth locking holes, the two fifth locking holes are respectively arranged opposite to the two third locking holes, the side wall of the mounting head is provided with a mounting hole, and the clamping head is inserted into the mounting hole.

[0007] As a preferred technical solution of this utility model, the connecting piece has two first locking holes on its front side, and the two first locking holes are respectively opened opposite to the two first threaded holes. The connecting piece has a second locking hole in the middle of its front side, and the second locking hole is used to pass through the first locking bolt.

[0008] As a preferred technical solution of this utility model, the connecting piece structure is arched, and a fourth locking hole is provided at both ends of the connecting piece. Two abutments are provided between the two connecting pieces, and the two abutments are respectively located at both ends of the fixing ring.

[0009] As a preferred technical solution of this utility model, the abutment includes a connecting column and an arc-shaped plate. The side wall of the connecting column is provided with a groove, and the middle of the front and rear end faces of the connecting column are provided with second threaded holes. The two second threaded holes are respectively opened opposite to the two fourth locking holes. One end of the arc-shaped plate is set in the groove of the connecting column, and the outer shape of the outer wall of the arc-shaped plate is adapted to fit the outer circumferential surface of the fixing ring.

[0010] As a preferred embodiment of this utility model, a placement groove is provided in the middle of the protrusion, and the two fifth locking holes are connected to the placement groove. A receiving groove is provided at the end of the clamping head away from the protrusion. A first limiting hole is provided at the position directly opposite the inner wall of the receiving groove. The mounting hole is a stepped hole. A first clamping ring, a first connecting ring, a first retaining ring, a sealing ring, a second retaining ring, an abutment ring, a sealing ring, and a second clamping ring are sequentially fitted on the outer circumference of the clamping head. There are two first retaining rings and two sealing rings. The second clamping ring is clamped to the end of the clamping head and is flush with its end. A second limiting hole is provided on the outer circumference of the second clamping ring. The second limiting hole is opened directly opposite the first limiting hole. Limiting pins are inserted into the first limiting hole and the second limiting hole.

[0011] As a preferred technical solution of this utility model, the mounting head has a slot on its side wall, and the upper and lower inner walls of the slot have a first through hole and two second through holes. The blade is disposed in the slot, and a second locking bolt is provided in both the first through hole and the second through hole.

[0012] As a preferred embodiment of this utility model, springs are provided between the blade and the two second through holes, and the four springs are respectively sleeved on the two second locking bolts.

[0013] As a preferred technical solution of this utility model, the fixing ring has a locking hole, the drive shaft is inserted into the locking hole, the connecting hole is located in the center of the front of the boss, and the two first threaded holes are arranged diagonally opposite each other.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model discloses a drone propeller mounting structure. A fixing ring is fitted onto the drive shaft, and two connecting pieces are placed at the front and rear ends of the fixing ring to securely connect the fixing part to the drive shaft. The drive part on the top of the drone drives the drive shaft and the fixing part to rotate. The rotation of the propeller blades on the fixing part generates wind power, propelling the drone forward. A stop block is placed between the two connecting pieces, and the arc-shaped plate of the stop block fits tightly against the outer circumference of the fixing ring, further improving the stability of the connection between the connecting pieces and the fixing ring, ensuring a secure and reliable connection. A spring is placed between the propeller blade and the mounting head's groove, limiting and adjusting the propeller blade's position. This allows the propeller blade to adjust its angle in real time during rotation, while preventing wear caused by friction between the propeller blade and the inner wall of the groove, providing good cushioning and extending the propeller blade's service life. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a three-dimensional exploded view of the connection relationship between the fixing part and the blade of this utility model;

[0019] Figure 3 This is a three-dimensional schematic diagram of the fixed ring structure of this utility model;

[0020] Figure 4 This is a three-dimensional schematic diagram of the connecting piece structure of this utility model;

[0021] Figure 5 This is a three-dimensional schematic diagram of the block structure of this utility model;

[0022] Figure 6 This is a three-dimensional schematic diagram of the mounting head structure of this utility model;

[0023] Figure 7 This is a three-dimensional schematic diagram of the card head structure of this utility model.

[0024] In the diagram: 1. Drive unit; 2. Drive shaft; 3. Retaining ring; 301. Snap hole; 302. Boss; 303. Connecting hole; 304. First threaded hole; 4. Connecting piece; 401. First locking hole; 402. Second locking hole; 403. Third locking hole; 404. Fourth locking hole; 5. Abutment; 51. Connecting post; 511. Groove; 512. Second threaded hole; 52. Arc plate; 6. Fixing unit; 61. Mounting head; 611. Mounting hole; 612. Snap groove; 613. First 614. Second through hole; 62. Clip; 621. Protrusion; 622. Placement groove; 623. Fifth locking hole; 624. Receiving groove; 625. First limiting hole; 63. First clamping ring; 64. First connecting ring; 65. First retaining ring; 66. Second clamping ring; 661. Second limiting hole; 67. Abutment ring; 68. Sealing ring; 69. Second retaining ring; 70. Sealing ring; 71. Limiting pin; 7. Blade; 8. Spring; 9. First locking bolt; 10. Second locking bolt. Detailed Implementation

[0025] The embodiments of this utility model will now be described with reference to the accompanying drawings. In this process, to ensure clarity and convenience, we may exaggerate the width of lines or the size of constituent elements in the drawings.

[0026] Furthermore, the terms used below are defined based on the functions of this utility model and may vary depending on the user's or operator's intent or convention. Therefore, these terms are defined based on the entire contents of this specification.

[0027] like Figures 1 to 7As shown, a drone propeller mounting structure includes a drive unit 1 and a drive shaft 2. The drive shaft 2 is located on top of the drive unit 1 and is driven to rotate by the drive unit 1. The drive unit 1 is located on the top of the drone. A fixing ring 3 is fitted onto the drive shaft 2. A retaining hole 301 is provided in the fixing ring 3, and the drive shaft 2 is inserted into the retaining hole 301. Both the front and rear ends of the fixing ring 3 are provided with bosses 302. The front of the bosses 302 is provided with connecting holes 303 and two first threaded holes 304. Located in the center of the front of the boss 302, the first locking bolt 9 is inserted into the connecting hole 303. The first locking bolt 9 passes through the outer circumference of the drive shaft 2 and is locked to the drive shaft 2 by a nut. The two first threaded holes 304 are arranged diagonally opposite each other. The front and rear ends of the fixed ring 3 are provided with connecting pieces 4. The front of the connecting piece 4 has two first locking holes 401, which are respectively opened opposite to the two first threaded holes 304. The bolt passes through the first locking holes 401 and screws in. The first threaded hole 304 is engaged and locked. A second locking hole 402 is provided in the center of the front of the connecting piece 4. The second locking hole 402 is used to engage the first locking bolt 9. The connecting piece 4 has an arched structure. Two third locking holes 403 and four locking holes 404 are provided at both ends of the connecting piece 4. Two abutments 5 are provided between the two connecting pieces 4. The two abutments 5 are located at both ends of the fixing ring 3. The abutment 5 includes a connecting post 51 and an arc-shaped plate 52. The side wall of the connecting post 51 A groove 511 is provided. A second threaded hole 512 is provided in the middle of the front and rear end faces of the connecting post 51. The two second threaded holes 512 are respectively opened opposite to the two fourth locking holes 404. The connecting post 51 is locked between the two connecting pieces 4 by bolts. One end of the arc plate 52 is set in the groove 511 of the connecting post 51. The outer shape of the outer wall of the arc plate 52 is adapted to fit the outer circumferential surface of the fixing ring 3. Both ends of the two connecting pieces 4 are provided with fixing parts 6. The end of the fixing part 6 away from the connecting piece 4 is provided with a blade 7.

[0028] like Figure 2As shown, the fixing part 6 includes an mounting head 61 and a locking head 62. The locking head 62 has a protrusion 621 on its side wall, and a placement groove 622 is formed in the middle of the protrusion 621. Two fifth locking holes 623 are formed on the front of the protrusion 621, communicating with the placement groove 622. The two fifth locking holes 623 are respectively positioned opposite to two third locking holes 403. The locking head 62 is locked to the connecting piece 4 by bolts passing through the third locking holes 403 and the fifth locking holes 623. A receiving groove 624 is formed at the end of the locking head 62 away from the protrusion 621. A first limiting hole 625 is formed on the inner wall of the receiving groove 624 at a position directly opposite to the protrusion 621. The mounting head 61 has a mounting hole 611 on its side wall, which is stepped. The trapezoidal hole allows the clamp head 62 to be inserted into the mounting hole 611. The outer circumference of the clamp head 62 is sequentially fitted with a first clamping ring 63, a first connecting ring 64, a first retaining ring 65, a sealing ring 70, a second retaining ring 69, an abutment ring 67, a sealing ring 68, and a second clamping ring 66. Two first retaining rings 65 and two sealing rings 68 are provided to improve the sealing performance of the fixing part 6. The second clamping ring 66 is clamped to the end of the clamp head 62 and flush with its end. A second limiting hole 661 is provided on the outer circumference of the second clamping ring 66, directly opposite the first limiting hole 625. A limiting pin 71 is inserted into both the first limiting hole 625 and the second limiting hole 661, fixing the clamp head 62 to the mounting head 61 via the limiting pin 71.

[0029] like Figure 6 As shown, the mounting head 61 has a slot 612 on its side wall. The upper and lower inner walls of the slot 612 have a first through hole 613 and two second through holes 614. The blade 7 is disposed in the slot 612. A second locking bolt 10 is disposed in both the first through hole 613 and the second through hole 614. A spring 8 is disposed between the blade 7 and the two second through holes 614. The four springs 8 are respectively sleeved on the two second locking bolts 10.

[0030] The specific implementation method is as follows: a fixing ring 3 is fitted onto the drive shaft 2, and two connecting pieces 4 are set at the front and rear ends of the fixing ring 3 to fix the fixing part 6, thereby fixing the fixing part 6 to the drive shaft 2. The drive part 1 on the top of the drone drives the drive shaft 2 and the fixing part 6 to rotate. The blades 7 set on the fixing part 6 rotate to generate wind power to move the drone. A stop block 5 is set between the two connecting pieces 4. The arc plate 52 of the stop block 5 fits and clamps with the outer circumference of the fixing ring 3, further improving the stability of the connection between the connecting pieces 4 and the fixing ring 3. The connection is firm and reliable. A spring 8 is set between the blade 7 and the slot 612 of the mounting head 61. The spring 8 limits and adjusts the blade 7, so that the blade 7 adjusts its angle in real time during rotation. At the same time, it prevents the blade 7 from contacting and rubbing against the inner wall of the slot 612, which causes wear. The buffering effect is good, thereby extending the service life of the blade.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A propeller blade mounting structure for a drone, comprising a drive unit (1) and a drive shaft (2), wherein the drive shaft (2) is disposed on the top of the drive unit (1), and the drive unit (1) is disposed on the top of the drone, characterized in that: A fixing ring (3) is fitted on the drive shaft (2). The front and rear ends of the fixing ring (3) are provided with bosses (302). The front of the bosses (302) is provided with connecting holes (303) and two first threaded holes (304). A first locking bolt (9) is inserted into the connecting hole (303). The first locking bolt (9) passes through the outer circumference of the drive shaft (2). The front and rear ends of the fixing ring (3) are provided with connecting pieces (4). Two third locking holes (403) are provided at both ends of the connecting pieces (4). Each part is provided with a fixing part (6). The end of the fixing part (6) away from the connecting piece (4) is provided with a blade (7). The fixing part (6) includes a mounting head (61) and a locking head (62). The side wall of the locking head (62) is provided with a protrusion (621). The front of the protrusion (621) has two fifth locking holes (623). The two fifth locking holes (623) are respectively positioned opposite to the two third locking holes (403). The side wall of the mounting head (61) is provided with a mounting hole (611). The locking head (62) is inserted into the mounting hole (611).

2. The UAV propeller blade mounting structure according to claim 1, characterized in that: The connecting piece (4) has two first locking holes (401) on its front side. The two first locking holes (401) are respectively opened opposite to the two first threaded holes (304). The connecting piece (4) has a second locking hole (402) in the middle of its front side. The second locking hole (402) is used to cooperate with the first locking bolt (9) to pass through.

3. The UAV propeller blade mounting structure according to claim 1, characterized in that: The connecting piece (4) has an arched structure. Both ends of the connecting piece (4) are provided with a fourth locking hole (404). Two abutments (5) are provided between the two connecting pieces (4). The two abutments (5) are located at both ends of the fixing ring (3).

4. The UAV propeller blade mounting structure according to claim 3, characterized in that: The abutment (5) includes a connecting post (51) and an arc plate (52). The side wall of the connecting post (51) is provided with a groove (511). The middle of the front and rear end faces of the connecting post (51) is provided with a second threaded hole (512). The two second threaded holes (512) are respectively opened opposite to the two fourth locking holes (404). One end of the arc plate (52) is set in the groove (511) of the connecting post (51). The outer shape of the outer wall of the arc plate (52) is adapted to fit the outer circumferential surface of the fixing ring (3).

5. The UAV propeller blade mounting structure according to claim 1, characterized in that: A placement groove (622) is provided in the middle of the protrusion (621), and the two fifth locking holes (623) are connected to the placement groove (622). A receiving groove (624) is provided at the end of the clamp (62) away from the protrusion (621). A first limiting hole (625) is provided at the position directly opposite the inner wall of the receiving groove (624). The mounting hole (611) is a stepped hole. A first clamping ring (63), a first connecting ring (64), a first retaining ring (65), a sealing ring (70), and a second locking ring are sequentially fitted on the outer circumference of the clamp (62). The first retaining ring (65) is provided in two parts, the first retaining ring (68) is provided in two parts, the second clamping ring (66) is snapped onto the end of the retaining head (62) and flush with its end. A second limiting hole (661) is provided on the outer circumference of the second clamping ring (66), the second limiting hole (661) is opened opposite the first limiting hole (625), and a limiting pin (71) is inserted into the first limiting hole (625) and the second limiting hole (661).

6. The UAV propeller blade mounting structure according to claim 1, characterized in that: The mounting head (61) has a slot (612) on its side wall. The slot (612) has a first through hole (613) and two second through holes (614) on its upper and lower inner walls. The blade (7) is set in the slot (612). The first through hole (613) and the second through hole (614) are each provided with a second locking bolt (10).

7. The UAV propeller blade mounting structure according to claim 1, characterized in that: Springs (8) are provided between the blade (7) and the two second through holes (614), and the four springs (8) are respectively sleeved on the two second locking bolts (10).

8. The UAV propeller blade mounting structure according to claim 1, characterized in that: The fixing ring (3) has a retaining hole (301) inside, the drive shaft (2) is inserted into the retaining hole (301), the connecting hole (303) is located in the middle of the front of the boss (302), and the two first threaded holes (304) are arranged diagonally opposite each other.

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