Propeller, propeller assembly and unmanned aerial vehicle

Abstract

This invention discloses a propeller, a propeller assembly using the propeller, and a drone using the propeller assembly. The propeller includes a fixed base, a pressing post, a propeller seat, and propeller blades fixed to the propeller seat. The pressing post is movably disposed within a receiving hole in the fixed base. The side wall of the fixed base has a mounting groove, and the side wall of the mounting groove has a guide groove penetrating the upper surface of the fixed base. The bottom wall of the mounting groove has a clearance opening. A locking block is formed on the outer surface of the pressing post within the clearance opening. The locking block moves with the pressing post and has an open position and a closed position, respectively connecting the mounting groove and the guide groove and blocking their connection. When the locking block is in the closed position, it forms a locking space with the side wall of the mounting groove. A boss is provided on the inner wall of the propeller seat. When the locking block is in the open position, the boss enters the mounting groove through the guide groove; when the locking block is in the closed position, the boss is locked within the locking space. This invention allows for faster and more convenient assembly and disassembly of the propeller blades.

Description

Technical Field

[0001] This invention relates to the field of unmanned aerial vehicle (UAV) technology, and particularly to a propeller, a propeller assembly using the propeller, and a UAV using the propeller assembly. Background Technology

[0002] Currently, when storing drones, the propeller blades usually need to be disassembled to avoid damage. Existing propellers generally use threaded connections to fix the blades to the motor output shaft, which makes it difficult to disassemble and assemble the propeller blades. Summary of the Invention

[0003] The main objective of this invention is to provide a propeller that makes the assembly and disassembly of the propeller blades faster and more convenient.

[0004] To achieve the above objectives, the present invention proposes a propeller for use in unmanned aerial vehicles (UAVs), comprising a fixed base, a pressing post, a propeller base, and a propeller blade fixed to the outer wall of the propeller base. The upper end face of the fixed base has a receiving hole, and the pressing post is movably inserted into the receiving hole. The side wall of the fixed base has a mounting groove, and the side wall of the mounting groove has a guide groove penetrating the upper end face of the fixed base. The bottom wall of the mounting groove has a clearance opening communicating with the receiving hole. A locking block is formed on the outer surface of the pressing post. The locking block passes through the clearance opening and is received within the mounting groove. The locking block moves with the pressing post and has an open position and a closed position. When the locking block is in the open position, it connects the mounting groove and the guide groove. When the locking block is in the closed position, it blocks the connection between the mounting groove and the guide groove and forms a holding space with the side wall of the mounting groove.

[0005] The paddle seat has a receiving cavity facing the fixed seat. The inner wall of the receiving cavity is provided with a boss. When the locking block is in the open position, the boss enters the mounting groove through the guide groove. When the locking block is in the blocking position, the boss is locked in the locking space.

[0006] Optionally, the fixing base includes a fixing plate and a fixing frame fixed to the fixing plate. The receiving hole is opened on the end face of the fixing frame away from the fixing plate and passes through the fixing frame. The mounting groove is opened on the side wall of the fixing frame. The guide groove is opened on the upper side wall of the mounting groove and passes through the end face of the fixing frame away from the fixing plate.

[0007] Optionally, the mounting bracket has a mounting hole on its end face facing the fixing plate, and the fixing plate has a fixing hole. The mounting bracket is fixed to the fixing plate by fasteners that cooperate with the mounting hole and the fixing hole.

[0008] Optionally, the button post has a receiving cavity on its end face facing the fixing plate, and the fixing plate has an elastic element on its surface facing the receiving cavity. One end of the elastic element abuts against the fixing plate, and the other end extends into the receiving cavity and abuts against the wall of the receiving cavity facing the fixing plate, so that the button post has a tendency to move away from the fixing plate, and the locking block is located in the blocking position.

[0009] Optionally, the fixing plate has a connecting hole for fixing the motor output shaft.

[0010] Optionally, the paddle seat includes a top plate and a side plate surrounding the edge of the top plate. The side plate and the top plate together form the receiving cavity. The top plate has a clearance through hole, and the end of the button post facing away from the fixed seat passes through the clearance through hole.

[0011] Optionally, the boss is disposed on the inner wall surface of the side plate, and a limiting plate is also provided on the inner wall surface of the side plate adjacent to the top plate. The limiting plate abuts against the upper end surface of the fixing seat when the boss is engaged in the holding space.

[0012] Optionally, the outer wall of the fixing seat is provided with a plurality of mounting slots, the plurality of mounting slots are spaced apart along the circumference of the fixing seat, each mounting slot has a guide groove on its side wall and a clearance opening on its bottom wall, the outer surface of the button post is formed with a plurality of locking blocks, each locking block passes through a clearance opening and is accommodated in the corresponding mounting slot, each locking block connects a mounting slot and a corresponding guide groove when in the open position, and each locking block blocks the connection between a mounting slot and a corresponding guide groove when in the sealed position, and forms a locking space with the side wall of the corresponding mounting slot;

[0013] The inner wall of the accommodating cavity is provided with a plurality of protrusions. Each protrusion enters the corresponding mounting groove through a guide groove when the locking block is in the open position, and is locked in the corresponding locking space when the locking block is in the blocking position.

[0014] The present invention also proposes a propeller assembly, including a propeller and a motor. The propeller includes a fixed base, a pressing post, a propeller seat, and a blade fixed to the outer wall of the propeller seat. The upper end face of the fixed base has a receiving hole, and the pressing post is movably inserted into the receiving hole. The side wall of the fixed base has a mounting groove, and the side wall of the mounting groove has a guide groove penetrating the upper end face of the fixed base. The bottom wall of the mounting groove has a clearance opening communicating with the receiving hole. A locking block is formed on the outer surface of the pressing post, and the locking block passes through the clearance opening and is received in the mounting groove. The locking block follows the movement of the pressing post. The button column has an open position and a closed position. When the locking block is in the open position, it connects the mounting groove and the guide groove. When the locking block is in the closed position, it blocks the connection between the mounting groove and the guide groove and forms a holding space with the side wall of the mounting groove. The propeller seat has a receiving cavity facing the fixed seat. The inner wall of the receiving cavity is provided with a boss. When the locking block is in the open position, the boss enters the mounting groove through the guide groove. When the locking block is in the closed position, the boss is locked in the holding space. The fixed seat of the propeller is fixed to the output shaft of the motor.

[0015] The present invention also proposes a drone, including a propeller assembly comprising a propeller and a motor. The propeller includes a mounting base, a pressing post, a propeller seat, and a blade fixed to the outer wall of the propeller seat. The upper end face of the mounting base has a receiving hole, and the pressing post is movably inserted into the receiving hole. The side wall of the mounting base has a mounting groove, and the side wall of the mounting groove has a guide groove penetrating the upper end face of the mounting base. The bottom wall of the mounting groove has a clearance opening communicating with the receiving hole. The outer surface of the pressing post has a locking block, which passes through the clearance opening and is received within the mounting groove. The locking block moves with the button post and has an open position and a closed position. When the locking block is in the open position, it connects the mounting groove and the guide groove. When the locking block is in the closed position, it blocks the connection between the mounting groove and the guide groove and forms a locking space with the side wall of the mounting groove. The propeller seat has a receiving cavity facing the fixed seat. The inner wall of the receiving cavity is provided with a boss. When the locking block is in the open position, the boss enters the mounting groove through the guide groove. When the locking block is in the closed position, the boss is locked in the locking space. The fixed seat of the propeller is fixed to the output shaft of the motor.

[0016] The technical solution of this invention involves movably inserting a button post into the receiving hole of a fixed base, and providing a mounting groove on the side wall of the fixed base, a guide groove penetrating the upper end face of the fixed base on the side wall of the mounting groove, and a clearance opening communicating with the receiving hole on the bottom wall of the mounting groove. Simultaneously, a locking block formed on the outer surface of the button post passes through the clearance opening and is received in the mounting groove. This allows the locking block to move with the button post, having both an open and a closed position, thereby enabling the mounting groove and the guide groove to communicate or be blocked from communicating. Furthermore, when the locking block is in the open position (the mounting groove and the guide groove are connected), the protrusion on the inner wall of the propeller seat receiving cavity can enter the mounting groove through the guide groove. Then, by rotating the propeller seat, the locking block returns to the closed position (the mounting groove and the guide groove are blocked from communicating). At this time, the protrusion on the inner wall of the propeller seat receiving cavity can be held within the holding space formed by the locking block and the side wall of the mounting groove, thus completing the fixed installation of the propeller blade fixed to the outer wall of the propeller seat. Furthermore, when it is necessary to disassemble the propeller blade, simply press the button post to open the locking block, connecting the mounting slot and the guide slot. At this point, rotating the propeller seat allows the protrusion on the inner wall of the propeller seat cavity to pass through the guide slot and move out of the mounting slot, thus separating the propeller seat from the fixed seat and allowing the propeller blade to be disassembled. This solves the problem of inconvenient assembly and disassembly of existing threaded connections, making propeller blade assembly and disassembly faster and more convenient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the propeller assembly of the present invention;

[0019] Figure 2 for Figure 1 Cross-sectional view of the propeller assembly;

[0020] Figure 3 for Figure 1 Exploded view of the propeller assembly;

[0021] Figure 4 for Figure 3 A schematic diagram of the structure in which the central fixing bracket and the button are coupled;

[0022] Figure 5 for Figure 3 A schematic diagram of the propeller base from another perspective.

[0023] Explanation of icon numbers:

[0024] label name label name 100 propeller assembly 135 elastic element 10 propeller 137 Resistance Department 11 Fixed base 15 paddle seat 111 Fixture 151 roof 1111 Accommodation hole 1511 Allowing through holes 1113 Mounting slot 1513 Weight loss mouth 1115 Guide groove 153 Side panel 1117 Stop section 1531 boss 1119 Mounting holes 1533 Limit plate 113 Fixed plate 155 Container cavity 115 Card space 17 paddle blades 13 Button column 30 motor 131 Card Block 31 Output shaft 133 Receiving cavity

[0025] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0028] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If 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 claimed by the present invention.

[0031] This invention proposes a propeller 10, which is applied to unmanned aerial vehicles (UAVs).

[0032] Please see Figures 1 to 3In one embodiment of the propeller 10 of the present invention, the propeller 10 includes a fixed base 11, a pressing post 13, a propeller base 15, and a propeller blade 17 fixed to the outer wall of the propeller base 15. The upper end face of the fixed base 11 has a receiving hole 1111, and the pressing post 13 is movably inserted into the receiving hole 1111. The side wall of the fixed base 11 has a mounting groove 1113, and the side wall of the mounting groove 1113 has a guide groove 1115 penetrating the upper end face of the fixed base 11. The bottom wall of the mounting groove 1113 has a groove communicating with the receiving hole. The button post 13 has a clearance opening, and a locking block 131 is formed on the outer surface of the button post 13. The locking block 131 passes through the clearance opening and is accommodated in the mounting groove 1113. The locking block 131 moves with the button post 13 and has an open position and a blocking position. When the locking block 131 is in the open position, it connects the mounting groove 1113 and the guide groove 1115. When the locking block 131 is in the blocking position, it blocks the connection between the mounting groove 1113 and the guide groove 1115 and forms a holding space 115 with the side wall of the mounting groove 1113.

[0033] The paddle seat 15 has a receiving cavity 155 facing the fixed seat 11. The inner wall of the receiving cavity 155 is provided with a boss 1531. When the locking block 131 is in the open position, the boss 1531 enters the mounting groove 1113 through the guide groove 1115. When the locking block 131 is in the blocking position, the boss 1531 is locked in the locking space 115.

[0034] Specifically, the fixing base 11 is generally cylindrical, with a receiving hole 1111 vertically formed in the middle of its upper end face. The button post 13 is also generally cylindrical, but its cross-sectional size is slightly smaller than that of the receiving hole 1111, allowing the button post 13 to be movably received within the receiving hole 1111. A mounting groove 1113 is formed radially on the side wall of the fixing base 11. A guide groove 1115 is formed on the upper side wall of the mounting groove 1113. One end of the guide groove 1115, away from the mounting groove 1113, penetrates the upper end face of the fixing base 11. The guide groove 1115 extends radially outward from the fixing base 11 and penetrates the side wall of the fixing base 11. That is, the guide groove 1115 is formed radially on the side wall of the fixing base 11, and the two ends of the guide groove 1115 are respectively connected to the upper end face of the fixing base 11 and the mounting groove 1113.

[0035] Furthermore, the bottom wall of the mounting groove 1113 is provided with a clearance opening that connects to the receiving hole 1111. Optionally, the clearance opening extends through the entire bottom wall of the mounting groove 1113 to ensure that the locking block 131 has sufficient room to move, while also saving materials and costs. At this time, the portion of the upper side wall of the mounting groove 1113 without the guide groove 1115 forms a stop portion 1117, and the outer surface of the button post 13 is integrally formed with a locking block 131, which passes through the clearance opening and is received within the mounting groove 1113. The outer surface of the button post 13 also has a supporting portion 137, which is connected to the circumferential locking block 131 of the button post 13. Optionally, the locking block 131 and the supporting portion 137 are both located at the lower end of the button post 13 and are flush with the lower end surface of the button post 13, and are spaced vertically from the lower side wall of the mounting groove 1113 to ensure that the locking block 131 and the button post 13 can reciprocate along the axial direction of the fixed seat 11. At this time, the locking block 131 moves up and down with the button post 13 and has an open position and a closed position. The paddle seat 15 is generally a cylindrical structure with an open lower end. A receiving cavity 155 is formed inside the paddle seat 15. The inner wall surface of the receiving cavity 155 is provided with a boss 1531. Optionally, the boss 1531 is located near the end of the paddle seat 15 facing the fixed seat 11, which can reduce the volume of the paddle seat 15, thereby saving materials and costs. When it is necessary to install the blade 17, the lower end of the blade seat 15 can be fitted onto the fixing seat 11, that is, the upper end of the fixing seat 11 is inserted into the receiving cavity 155 of the blade seat 15. At this time, the protrusion 1531 on the inner wall of the receiving cavity 155 of the blade seat 15 is aligned with the guide groove 1115 and the blade seat 15 is pressed down, so that the protrusion 1531 abuts against the locking block 131 and drives the locking block 131 to move to the open position. Then, when the locking block 131 moves to the open position, the blade seat 15 is rotated so that the locking block 131 returns to the blocking position (the mounting groove 1113 and the guide groove 1115 are blocked from communicating). At this time, the protrusion 1531 on the inner wall of the receiving cavity 155 of the blade seat 15 can be locked in the locking space 115 formed by the locking block 131 and the side wall of the mounting groove 1113. In this way, the fixed installation of the blade 17 fixed on the outer wall of the blade seat 15 can be completed. At this time, the supporting part 137 abuts against the side wall of the clearance opening away from the locking block 131, thereby limiting the circumferential movement of the locking block 131 and making the movement of the locking block 131 more stable. When it is necessary to disassemble the blade 17, simply press the button post 13 to put the locking block 131 in the open position, and the mounting groove 1113 communicates with the guide groove 1115. At this time, rotate the blade seat 15, and the protrusion 1531 on the inner wall surface of the blade seat 15 receiving cavity 155 can pass through the guide groove 1115 and move out of the mounting groove 1113, thereby separating the blade seat 15 from the fixing seat 11 and allowing the blade 17 to be disassembled. It can be understood that after the upper end of the fixing seat 11 extends into the receiving cavity 155, its outer wall abuts against the inner wall surface of the receiving cavity 155, thus improving the stability of the blade seat 15 installation.

[0036] Therefore, it can be understood that the technical solution of the present invention, by movably inserting the button post 13 into the receiving hole 1111 of the fixing base 11, and by forming a mounting groove 1113 on the side wall of the fixing base 11, a guide groove 1115 penetrating the upper end face of the fixing base 11 on the side wall of the mounting groove 1113, and a clearance opening communicating with the receiving hole 1111 on the bottom wall of the mounting groove 1113, and by passing the locking block 131 formed on the outer surface of the button post 13 through the clearance opening and receiving it in the mounting groove 1113, allows the locking block 131 to have an open position and a blocking position as it moves with the button post 13, thereby making the mounting groove 1113 and the guide groove 1115 communicate. The connection may be blocked, allowing the protrusion 1531 on the inner wall of the propeller seat 15 receiving cavity 155 to enter the mounting groove 1113 through the guide groove 1115 when the locking block 131 is in the open position (the mounting groove 1113 and the guide groove 1115 are connected). Then, the propeller seat 15 is rotated so that the locking block 131 returns to the blocked position (the mounting groove 1113 and the guide groove 1115 are blocked from connecting). At this time, the protrusion 1531 on the inner wall of the propeller seat 15 receiving cavity 155 can be locked in the locking space 115 formed by the locking block 131 and the side wall of the mounting groove 1113. In this way, the fixed installation of the propeller blade 17 fixed on the outer wall of the propeller seat 15 can be completed. Furthermore, when it is necessary to disassemble the blade 17, simply press the button post 13 to open the locking block 131, connecting the mounting groove 1113 with the guide groove 1115. At this time, rotating the propeller seat 15 allows the protrusion 1531 on the inner wall of the propeller seat 15's accommodating cavity 155 to pass through the guide groove 1115 and move out of the mounting groove 1113, thereby separating the propeller seat 15 from the fixed seat 11 and allowing the blade 17 to be disassembled. This solves the problem of inconvenient disassembly and assembly of existing threaded connections, making the disassembly and assembly of the propeller blade 17 of the propeller 10 faster and more convenient.

[0037] like Figure 2 and Figure 3 As shown, the fixing base 11 includes a fixing plate 113 and a fixing frame 111 fixed to the fixing plate 113. The receiving hole 1111 is opened on the end face of the fixing frame 111 away from the fixing plate 113 and passes through the fixing frame 111. The mounting groove 1113 is opened on the side wall of the fixing frame 111. The guide groove 1115 is opened on the upper side wall of the mounting groove 1113 and passes through the end face of the fixing frame 111 away from the fixing plate 113.

[0038] Specifically, the fixing bracket 111 and the fixing plate 113 can be fixed by screw connection, snap-fit ​​connection, adhesive bonding, or other reasonable and effective connection methods. The receiving hole 1111 is opened in the middle of the upper end face of the fixing bracket 111 and penetrates the fixing bracket 111 in a direction perpendicular to the fixing plate 113. The mounting groove 1113 is opened in the outer wall of the fixing bracket 111 and penetrates the end of the fixing bracket 111 facing the fixing plate 113. Optionally, the lower end side wall of the mounting groove 1113 coincides with the surface of the fixing plate 113 facing the fixing bracket 111, which can reduce the volume of the fixing bracket 111, thereby saving materials and costs. The guide groove 1115 is opened in the side wall of the mounting groove 1113 away from the fixing plate 113 and penetrates the upper end face of the fixing bracket 111, so that the boss 1531 can enter the mounting groove 1113 through the guide groove 1115 when the locking block 131 is in the open position.

[0039] like Figure 4 As shown, the fixing bracket 111 has a mounting hole 1119 on its end face facing the fixing plate 113, and the fixing plate 113 has a fixing hole. The fixing bracket 111 is fixed to the fixing plate 113 by fasteners that cooperate with the mounting hole 1119 and the fixing hole.

[0040] In this embodiment, the mounting bracket 111 has mounting positions (not shown), and mounting positions have mounting holes 1119. The fixing plate 113 has corresponding fixing holes. The mounting bracket 111 is fixed to the fixing plate 113 by screws engaging with the mounting holes 1119 and fixing holes, thus enhancing the stability of the mounting bracket 111. Furthermore, the mounting bracket 111 includes a plurality of mounting holes 1119, which are spaced apart circumferentially along the mounting bracket 111 and are evenly distributed, further enhancing the stability of the mounting bracket 111.

[0041] like Figure 2 and Figure 4 The button post 13 has a receiving cavity 133 on its end face facing the fixing plate 113. The fixing plate 113 has an elastic element 135 on its surface facing the receiving cavity 133. One end of the elastic element 135 abuts against the fixing plate 113, and the other end extends into the receiving cavity 133 and abuts against the wall surface of the receiving cavity 133 facing the fixing plate 113, so that the button post 13 has a tendency to move away from the fixing plate 113, and the locking block 131 is located in the blocking position.

[0042] Specifically, the end of the elastic element 135 facing away from the fixed plate 113 extends into the receiving cavity 133 of the button post 13. This limits the elastic element 135, helping to prevent unexpected displacement and making the assembly and disassembly of the paddle seat 15 faster and more convenient. In this embodiment, the elastic element 135 is a spring. One end of the spring abuts against the fixed plate 113, and the other end extends into the receiving cavity 133 and abuts against the wall of the receiving cavity 133 facing the fixed plate 113. It can be understood that the spring is always in a compressed state during the movement of the button post 13. Thus, when the locking block 131 is in the blocking position, due to the elasticity of the spring, the button post 13 has a tendency to move away from the fixed plate 113, which is equivalent to applying an upward external force to the button post 13 to lock it. Block 131 is positioned in the blocking position, thus ensuring the stability of the holding space 115 and effectively fixing the protrusion 1531 of the propeller mount 15, thereby ensuring the stability of the propeller mount 15 and guaranteeing the flight safety of the UAV. Similarly, when block 131 is in the open position, the mounting groove 1113 communicates with the guide groove 1115. Slightly rotating the propeller mount 15 allows the protrusion 1531 to pass through the guide groove 1115 and move out. At the same time, due to the elasticity of the spring, block 131 automatically returns to the blocking position. It is understood that the elastic element 135 in this embodiment can also be other elastic objects made of materials such as silicone.

[0043] Furthermore, the fixing plate 113 has a connecting hole for fixing the output shaft 31 of the motor 30.

[0044] Specifically, the connecting hole is opened in the middle of the fixed plate 113 and passes through the fixed plate 113. The output shaft 31 passes through the connecting hole and is fixedly connected to the fixed plate 113. The upper end of the output shaft 31 extends into the receiving cavity 133 of the button post 13, and the elastic element 135 is sleeved on the output shaft 31. This arrangement can further effectively limit the elastic element 135 and prevent the elastic element 135 from undergoing unexpected displacement, thereby making the disassembly and assembly of the propeller seat 15 faster and more convenient.

[0045] Further reading Figure 3 The paddle base 15 includes a top plate 151 and a side plate 153 surrounding the edge of the top plate 151. The side plate 153 and the top plate 151 together form the receiving cavity 155. The top plate 151 has a clearance through hole 1511. The end of the button post 13 facing away from the fixed base 11 passes through the clearance through hole 1511.

[0046] Specifically, the clearance through hole 1511 is opened in the middle of the top plate 151, and the upper end of the button post 13 passes through the clearance through hole 1511 and protrudes from the top plate 151. This arrangement makes it convenient to press the button post 13 to connect the mounting groove 1113 with the guide groove 1115 or to block the connection between the mounting groove 1113 and the guide groove 1115, thereby facilitating the installation and removal of the propeller seat 15.

[0047] In addition, in order to reduce the weight of the propeller base 15, several weight reduction openings 1513 are provided on the top plate 151. The weight reduction openings 1513 are spaced apart and evenly distributed, which can ensure the overall balance of the propeller base 15.

[0048] like Figure 5 As shown, the boss 1531 is disposed on the inner wall surface of the side plate 153, and a limiting plate 1533 is also provided on the inner wall surface of the side plate 153 adjacent to the top plate 151. When the boss 1531 is engaged in the holding space 115, the limiting plate 1533 abuts against the upper end surface of the fixing seat 11.

[0049] In this embodiment, the boss 1531 and the limiting plate 1533 are spaced apart on the inner wall surface of the side plate 153 in a direction perpendicular to the top plate 151, and the limiting plate 1533 is disposed adjacent to the top plate 151. When the locking block 131 is in the blocking position, the boss 1531 is locked in the locking space 115, and the limiting plate 1533 abuts against the upper end surface of the fixing frame 111. In this way, the fixing of the paddle seat 15 can be further strengthened.

[0050] Further reading Figure 3 The outer wall of the fixed base 11 is provided with a plurality of mounting grooves 1113, which are spaced apart around the circumference of the fixed base 11. Each mounting groove 1113 has a guide groove 1115 on its side wall and a clearance opening on its bottom wall. The outer surface of the button post 13 is formed with a plurality of locking blocks 131. Each locking block 131 passes through a clearance opening and is accommodated in the corresponding mounting groove 1113. Each locking block 131 has an open position and a blocking position as it moves with the button post 13. When the locking block 131 is in the open position, it connects a mounting groove 1113 with the corresponding guide groove 1115. When the locking block 131 is in the blocking position, it blocks the connection between a mounting groove 1113 and the corresponding guide groove 1115 and forms a holding space 115 with the side wall of the corresponding mounting groove 1113.

[0051] The inner wall of the accommodating cavity 155 is provided with a plurality of protrusions 1531. Each protrusion 1531 enters the corresponding mounting groove 1113 through a guide groove 1115 when the locking block 131 is in the open position, and is locked in the corresponding locking space 115 when the locking block 131 is in the blocking position.

[0052] Specifically, a plurality of mounting slots 1113 are spaced apart along the circumference of the fixing frame 111 on the outer wall of the fixing frame 111, and each mounting slot 1113 penetrates the end of the fixing frame 111 facing the fixing plate 113. Each mounting slot 1113 has a guide slot 1115 through the upper end of the fixing frame 111 on the side wall away from the fixing plate 113. The bottom wall of each mounting slot 1113 has a clearance opening that connects to the receiving hole 1111. A plurality of locking blocks 131 are spaced apart along the circumference of the button post 13 on the outer surface of the button post 13. Each locking block 131 passes through a clearance opening and is received in the corresponding mounting slot 1113. A plurality of bosses 1531 are spaced apart along the circumference of the propeller seat 15. On the inner wall of the side plate 153, each locking block 131 has an open position and a closed position as the button post 13 moves. Pressing the button post 13 makes the locking block 131 open. At this time, the mounting groove 1113 is connected to the guide groove 1115. The boss 1531 enters the mounting groove 1113 through the guide groove 1115. Slightly rotate the paddle seat 15 and then move the button post 13 to make the locking block 131 closed. At this time, each locking block 131 and the side wall of the corresponding mounting groove 1113 enclose a holding space 115. Each boss 1531 is held in a holding space 115. In this way, the fixed installation of the paddle seat 15 can be completed and the stability of the paddle seat 15 can be enhanced. Accordingly, pressing the button post 13 causes the locking block 131 to be in the open position. At this time, the mounting groove 1113 is connected to the guide groove 1115. Slightly rotating the propeller seat 15 causes the boss 1531 to pass through the guide groove 1115 and move out, thus completing the disassembly of the propeller seat 15.

[0053] Furthermore, a number of mounting slots 1113 are evenly distributed along the circumference of the fixed base 11, which further enhances the stability of the propeller base 15.

[0054] The present invention also proposes a propeller assembly 100, which includes a propeller 10 and a motor 30 as described above. The specific structure of the propeller 10 is as described in the foregoing embodiments. Since the propeller assembly 100 adopts all the technical solutions of all the foregoing embodiments, it has at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments, which will not be described in detail here. The mounting base 11 of the propeller 10 is fixed to the output shaft 31 of the motor 30.

[0055] The present invention also proposes an unmanned aerial vehicle (UAV) including a propeller assembly 100 as described above, the specific structure of which refers to the foregoing embodiments. Since this UAV adopts all the technical solutions of all the foregoing embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the foregoing embodiments, which will not be elaborated upon here.

[0056] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A propeller used in a drone, characterized in that, The device includes a fixed base, a button post, a propeller base, and a propeller blade fixed to the outer wall of the propeller base. The upper end face of the fixed base has a receiving hole, and the button post is movably inserted into the receiving hole. The side wall of the fixed base has a mounting groove, and the side wall of the mounting groove has a guide groove that penetrates the upper end face of the fixed base. The bottom wall of the mounting groove has a clearance opening that communicates with the receiving hole. The outer surface of the button post has a locking block, which passes through the clearance opening and is received in the mounting groove. The locking block moves with the button post and has an open position and a closed position. When the locking block is in the open position, it connects the mounting groove and the guide groove. When the locking block is in the closed position, it blocks the connection between the mounting groove and the guide groove and forms a holding space with the side wall of the mounting groove. The paddle seat has a receiving cavity facing the fixed seat. The inner wall of the receiving cavity is provided with a protrusion. When the locking block is in the open position, the protrusion enters the mounting groove through the guide groove. When the locking block is in the blocking position, the protrusion is locked in the locking space. The paddle base includes a top plate and a side plate surrounding the edge of the top plate. The side plate and the top plate together form the receiving cavity. The top plate has a clearance through hole. The end of the button post facing away from the fixed base passes through the clearance through hole. The boss is disposed on the inner wall surface of the side plate.

2. The propeller as claimed in claim 1, characterized in that, The fixing base includes a fixing plate and a fixing frame fixed to the fixing plate. The receiving hole is opened on the end face of the fixing frame away from the fixing plate and passes through the fixing frame. The mounting groove is opened on the side wall of the fixing frame. The guide groove is opened on the upper side wall of the mounting groove and passes through the end face of the fixing frame away from the fixing plate.

3. The propeller as described in claim 2, characterized in that, The mounting bracket has a mounting hole on its end face facing the fixing plate, and the fixing plate has a fixing hole. The mounting bracket is fixed to the fixing plate by fasteners that cooperate with the mounting hole and the fixing hole.

4. The propeller as described in claim 2, characterized in that, The button post has a receiving cavity on its end face facing the fixing plate. The fixing plate has an elastic element on its surface facing the receiving cavity. One end of the elastic element abuts against the fixing plate, and the other end extends into the receiving cavity and abuts against the wall of the receiving cavity facing the fixing plate, so that the button post has a tendency to move away from the fixing plate and that the locking block is located in the blocking position.

5. The propeller as described in claim 2, characterized in that, The fixing plate has a connecting hole for fixing the motor output shaft.

6. The propeller as claimed in claim 1, characterized in that, The inner wall surface of the side plate is also provided with a limiting plate adjacent to the top plate. The limiting plate abuts against the upper end surface of the fixing seat when the protrusion is engaged in the holding space.

7. The propeller as claimed in any one of claims 1 to 6, characterized in that, The outer wall of the fixed base is provided with a plurality of mounting slots, which are spaced apart along the circumference of the fixed base. Each mounting slot has a guide groove on its side wall and a clearance opening on its bottom wall. The outer surface of the button post is formed with a plurality of locking blocks. Each locking block passes through a clearance opening and is accommodated in a corresponding mounting slot. When the locking block is in the open position, it connects a mounting slot and a corresponding guide groove. When the locking block is in the closed position, it blocks the connection between a mounting slot and a corresponding guide groove and forms a locking space with the side wall of the corresponding mounting slot. The inner wall of the accommodating cavity is provided with a plurality of protrusions. Each protrusion enters the corresponding mounting groove through a guide groove when the locking block is in the open position, and is locked in the corresponding locking space when the locking block is in the blocking position.

8. A propeller assembly, characterized in that, Includes a propeller and a motor as described in any one of claims 1 to 7, wherein the propeller's mounting base is fixed to the output shaft of the motor.

9. A drone, characterized in that, The drone includes the propeller assembly as described in claim 8.

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