A propeller clamp device, propeller and aircraft

Abstract

The utility model discloses an aircraft technical field, especially discloses a kind of paddle clamp device, propeller and aircraft, including paddle seat, paddle blade support and positioning assembly, paddle seat is along with being provided with accommodation passage and several first positioning through-hole, several first positioning through-hole are sequentially arranged, paddle blade support includes connecting piece and positioning pivot, positioning pivot is fixed in connecting piece, positioning pivot is movably inserted in accommodation passage, positioning pivot is provided with several first positioning structure, several first positioning structure spiral setting, positioning assembly includes positioning piece, positioning piece is provided with first positioning arm, first positioning arm is provided with first cooperation structure, first positioning arm is inserted and fixed in different first positioning through-hole, first cooperation structure cooperates with different first positioning structure, the deflection angle of connecting piece relative to paddle seat deflection is not same. By the above-mentioned mode, the utility model embodiment can realize the manual adjustment of propeller pitch.

Description

Technical Field

[0001] This utility model relates to the field of aircraft technology, and in particular to a propeller clamping device, a propeller, and an aircraft. Background Technology

[0002] Rotary-wing aircraft are crucial flight tools for the current high-altitude economic development, playing an increasingly important role in numerous fields due to their superior payload capacity and maneuverability. Many natural environmental factors influence the flight status and performance of rotary-wing aircraft. For example, in areas with low atmospheric pressure, the thin air results in lower lift for drone propellers under the same operating conditions. Common methods to alter the lift of an aircraft include changing the propeller blade pitch and changing the drive motor speed.

[0003] Authorization announcement number "CN114735198B" discloses "a propeller structure and a rapid development and finalization method, including a propeller blade and a propeller clamp; it also includes a plurality of positioning blocks with mating surfaces having different inclination angles; the propeller clamp has receiving holes on both sides for accommodating the propeller blade, and the propeller clamp has positioning holes for installing the positioning blocks, the positioning holes communicating with the receiving holes, and the positioning blocks being detachably disposed in the positioning holes; one end of the propeller clamp that mates with the receiving holes is provided with a positioning shaft, and the positioning shaft has a limiting surface that mates with the mating surface of the positioning blocks to achieve radial positioning of the positioning shaft." The aforementioned patent allows for manual adjustment of the propeller pitch to adapt to different flight environments. However, the patent uses different positioning blocks to achieve the adjustment function, which means that adjusting different pitches requires matching positioning blocks with different angles, resulting in a large number of parts and inconvenience in carrying them. Utility Model Content

[0004] The main technical problem solved by this utility model embodiment is to provide a propeller clamp device, a propeller and an aircraft, which can manually adjust the pitch of the propeller, is simple to operate, easy to carry and reduces production costs.

[0005] To solve the above-mentioned technical problems, the present invention provides a propeller clamping device, including a propeller base, a blade support, and a positioning assembly. The propeller base has a receiving channel at one end along a first direction, and a plurality of first positioning through holes are provided on one side along a second direction. These first positioning through holes communicate with the receiving channel and are arranged sequentially along the first direction. The blade support includes a connector and a positioning shaft. The connector is used to install the propeller blades, and the positioning shaft is fixed to the connector and movably inserted into the receiving channel. The positioning shaft is provided with a plurality of first positioning structures, which are spirally arranged along the first direction. The first positioning structure is aligned with the first positioning through hole along the second direction. The positioning component includes a positioning member, which is provided with a first positioning arm. The first positioning arm is provided with a first mating structure. The first positioning arm is inserted into and fixed in the first positioning through hole. The first mating structure mates with the first positioning structure to restrict the pivoting of the positioning shaft. When the first positioning arm is inserted into different first positioning through holes and the first mating structure mates with different first positioning structures, the deflection angle of the connecting member relative to the propeller seat is different. The first direction is the direction in which the positioning shaft is inserted into the receiving channel, and the first direction is perpendicular to the second direction.

[0006] Optionally, the first positioning structure is a first positioning plane, and the inclination angles of several first positioning planes relative to the first direction are different. The first mating structure is a first mating plane. When the first mating plane is in contact with the first positioning plane, the positioning member restricts the positioning shaft from pivoting.

[0007] Optionally, the propeller base is provided with a plurality of first screw holes on one side along the second direction. The plurality of first screw holes are arranged sequentially along the first direction. Along the third direction, one first screw hole is aligned with one first positioning through hole. The first direction, the second direction, and the third direction are perpendicular to each other. The positioning member is provided with a positioning screw hole. The positioning assembly includes a positioning screw connector. The positioning screw connector passes through the positioning screw hole and is screwed into the first screw hole to lock the positioning member to the propeller base.

[0008] Optionally, the positioning member is further provided with a second positioning arm, the second positioning arm is provided with a second mating plane, the second mating plane is disposed opposite to the first mating plane, the propeller seat is further provided with a plurality of second positioning through holes on one side along the second direction, the plurality of second positioning through holes are connected to the receiving channel, the plurality of second positioning through holes are arranged sequentially along the first direction, along the third direction, one second positioning through hole is aligned with one first positioning through hole, the positioning shaft is further provided with a plurality of second positioning planes, along the radial direction of the positioning shaft, one second positioning plane is aligned with one first positioning plane, the included angle formed by one first positioning plane and one aligned second positioning plane is a positioning angle, any two of the positioning angles are equal in angle and are equal in angle to the included angle formed by the first mating plane and the second mating plane, wherein the second positioning arm is inserted into the second positioning through hole, and the second mating plane is in contact with the second positioning plane.

[0009] Optionally, the propeller base includes a base and a top cover, the base and the top cover are detachably fixed, the top cover is provided with an upper chamber, the base is provided with a lower chamber, the upper chamber and the lower chamber are connected to form the receiving channel, and the positioning matrix is ​​disposed on the top cover.

[0010] Optionally, the top cover is provided with a first groove at the entrance of the receiving channel along the first direction, and the base is provided with a second groove at the entrance of the receiving channel along the first direction. The first groove and the second groove are connected to form a limiting shaft hole. The positioning shaft is also provided with a first limiting groove. The first limiting groove is recessed and surrounds one end of the positioning shaft near the connector. The positioning shaft is received in the limiting shaft hole. The first groove and the second groove are engaged with the first limiting groove to restrict the positioning shaft within the receiving channel.

[0011] Optionally, the positioning shaft is provided with a second limiting groove, which is recessed and surrounds the end of the positioning shaft opposite to the connector. The propeller holder is also provided with a slot and a second screw hole. The slot communicates with the receiving channel. Along the second direction, the slot is aligned with the second limiting groove. The propeller clamping device further includes a limiting component, which includes a limiting member and a limiting screw member. The limiting member is provided with a limiting portion and a limiting screw hole. The limiting portion is recessed with a limiting groove. The limiting portion can be movably inserted into the slot. The limiting groove is engaged with the second limiting groove to restrict the positioning shaft within the receiving channel. The limiting screw member is sequentially screwed into the limiting screw hole and the second screw hole to lock the limiting member to the propeller holder.

[0012] Optionally, the blade support includes an upper support and a lower support. The upper support includes a first connecting arm and a first rotating shaft, and the lower support includes a second connecting arm and a second rotating shaft. The first rotating shaft and the second rotating shaft are detachably connected so that the first rotating shaft and the second rotating shaft are mated to form the positioning shaft, and the first connecting arm and the second connecting arm are mated to form the connecting member.

[0013] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is to provide a propeller, including the above-mentioned propeller clamp device.

[0014] To solve the above-mentioned technical problems, another technical solution adopted by this utility model is to provide an aircraft including the above-mentioned propeller.

[0015] The beneficial effects of this utility model embodiment are as follows: Unlike the prior art, this utility model embodiment provides a propeller clamping device, including a propeller base, a blade support, and a positioning assembly. One end of the propeller base along a first direction is provided with a receiving channel, and one side of the propeller base along a second direction is provided with a plurality of first positioning through holes, which communicate with the receiving channel and are arranged sequentially along the first direction. The blade support includes a connecting member and a positioning shaft. The connecting member is used to install the propeller blades, and the positioning shaft is fixed to the connecting member and movably inserted into the receiving channel. The positioning shaft is provided with… The system comprises several first positioning structures, spirally arranged along a first direction. Along a second direction, one first positioning structure aligns with a first positioning through-hole. The positioning assembly includes a positioning element, each equipped with a first positioning arm and a first mating structure. The first positioning arm is inserted into and fixed to the first positioning through-hole. The first mating structure mates with the first positioning structure to restrict the pivoting of the positioning shaft. When the first positioning arm is inserted into different first positioning through-holes, and the first mating structure mates with different first positioning structures, the deflection angle of the connecting member relative to the propeller base is different. Positioning blocks are inserted into positioning through-holes at different positions. Through the mating plane on the positioning arm and the mating with different first positioning structures on the positioning shaft, the propeller support is installed on the propeller base at different angles, thereby changing the installation angle of the propeller blade and achieving manual pitch adjustment of the propeller. This method simplifies the number of parts in the entire machine, reduces production costs, and facilitates portability and operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0017] Figure 1 This is an overall structural diagram of the propeller provided in this embodiment of the utility model; Figure 2 yes Figure 1 Enlarged view of part A in the middle; Figure 3 This is an exploded view of the paddle clamp device provided in this embodiment of the utility model; Figure 4 This is a structural diagram of the propeller holder provided in an embodiment of the present utility model; Figure 5 The structure of the blade support provided in this embodiment of the utility model is as follows. Figure 1 ; Figure 6 This is a structural diagram of the positioning component provided in an embodiment of the present utility model; Figure 7 The structure of the blade support provided in this embodiment of the utility model is as follows. Figure 2 ; Figure 8 This is a structural diagram of the top cover provided in an embodiment of the present utility model; Figure 9 This is a structural diagram of the base provided in an embodiment of the present utility model; Figure 10 This is an exploded view of another paddle clamping device provided in this embodiment of the present invention; Figure 11 This is a structural diagram of another propeller holder provided in an embodiment of the present utility model; Figure 12 This is a structural diagram of the limiting member provided in an embodiment of the present utility model; Figure 13 This is a cross-sectional view of the blade support provided in an embodiment of the present utility model; Figure 14 yes Figure 13 A magnified view of part B in the middle.

[0018] Explanation of reference numerals in the attached figures: 1000 propellers 100-blade clamp device, 200-blade propeller; 1. Paddle mount, 11. Reception channel, 12. First positioning through hole, 13. First screw hole, 14. Second positioning through hole, 15. Top cover, 151. Upper chamber, 152. First groove, 16. Base, 161. Lower chamber, 1611. First fixing screw hole, 162. Second groove, 17. Limiting shaft hole, 18. Slot, 19. Second screw hole; 2. Blade support, 21. First positioning structure, 22. Positioning shaft, 221. First positioning plane, 222. Second positioning plane, 223. First limiting groove, 224. Second limiting groove, 23. Connecting piece, 24. Upper support, 241. First connecting arm, 2411. Positioning post, 2411a. Second locking screw hole, 242. First shaft split, 25. Lower support, 251. Second connecting arm, 2511. Insertion hole, 252. Second shaft split, 26. Positioning pin, 261. First locking screw hole, 27. Locking screw connector; 3. Positioning assembly, 31. First mating structure, 32. Positioning component, 321. First positioning arm, 3211. First mating plane, 322. Positioning screw hole, 323. Second positioning arm, 3231. Second mating plane, 33. Positioning screw connector; 4. Limiting assembly, 41. Limiting piece, 411. Limiting part, 4111. Limiting groove, 412. Limiting screw hole, 42. Limiting screw connector; X is the first direction, Y is the second direction, and Z is the third direction. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as being "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as being "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this specification are for illustrative purposes only.

[0020] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0021] Please see Figure 1 This application provides a propeller 1000, including a propeller clamping device 100, a blade 200, and a rotating structure (not shown). The propeller clamping device 100 is mounted on the rotating structure, and the blade 200 is mounted on the propeller clamping device 100. The propeller clamping device 100 allows manual adjustment of the mounting angle of the blade 100, thereby achieving pitch adjustment of the propeller 1000. To facilitate the reader's understanding of the concept of this utility model embodiment, the specific structure of the propeller clamping device 100 will be described below.

[0022] For the aforementioned propeller clamp device 100, please refer to Figures 2 to 6 The propeller clamping device 100 includes a propeller base 1, a blade support 2, and a positioning component 3. The propeller base 1 has a receiving channel 11 along a first direction X and a plurality of first positioning through holes 12 along one side along a second direction Y. The plurality of first positioning through holes 12 are arranged sequentially along the first direction X and communicate with the receiving channel 11. One end of the blade support 2 is inserted into the receiving channel 11, and the other end is used to install the blade 200. The end of the blade support 2 inserted into the receiving channel 11 has a plurality of first positioning structures 21 along the first direction X. The positioning component 3 is inserted into the first positioning through holes 12 and has a first mating structure 31 for restricting the pivoting of the blade support 2. The positioning component 3 is inserted into different first positioning through holes 12. Through the mating of the first mating structure 31 with different first positioning structures 21, the blade support 2 maintains different deflection angles relative to the propeller base 1 to adjust the installation angle of the blade 200.

[0023] For the aforementioned propeller base 1, a plurality of first screw holes 13 are also provided on one side of the propeller base 1 along the second direction Y. The plurality of first screw holes 13 are arranged sequentially along the first direction X, and along the third direction Z, the first screw holes 13 are aligned one by one with the first positioning through holes 12.

[0024] The blade support 2 includes a connector 23 and a positioning shaft 22. The connector 23 is used to mount the blade 200. The positioning shaft 22 is fixed to one end of the connector 23 and can be movably inserted into the receiving channel 11. It can pivot around its own axis within the receiving channel 11. The first positioning structure 21 is a first positioning plane 221. Several first positioning planes 221 are spirally arranged on the positioning shaft 22 along the first direction X, with different inclination angles from the first direction X. When the positioning shaft 22 is inserted into the receiving channel 11, the first positioning planes 221 and the first positioning through holes 12 are aligned one by one along the second direction Y.

[0025] The positioning component 3 includes a positioning member 32 and a positioning screw connector 33. The positioning member 32 is provided with a first positioning arm 321 and a positioning screw hole 322. The first mating structure 31 is a first mating plane 3211, which is disposed on the first positioning arm 321. When the first positioning arm 321 is inserted into the first positioning through hole 12, the first mating plane 3211 fits against the first positioning plane 221, the positioning screw hole 322 aligns with the first screw hole 13, and the positioning screw connector 33 passes through the positioning screw hole 322 and is screwed into the first screw hole 13, locking the positioning member 32 onto the propeller seat 1, so that the positioning member 32 can restrict the pivoting of the positioning shaft 22. When the first positioning arm 321 is inserted into different first positioning through holes 12, the first mating plane 3211 fits against different first positioning planes 221, so that the connecting member 23 is installed on the propeller seat 1 with different deflection angles relative to the propeller seat 1.

[0026] Among them, the first direction X is the direction in which the positioning pivot 22 is inserted into the receiving channel 11, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0027] In some embodiments, the propeller base 1 is further provided with a plurality of second positioning through holes 14 on one side along the second direction Y. The second positioning through holes 14 are connected to the receiving channel 11. The plurality of second positioning through holes 14 are arranged sequentially along the first direction X. Along the third direction Z, the second positioning through holes 14 are aligned with the first positioning through holes 12 one by one. Corresponding to the second positioning through hole 14, the positioning shaft 22 is also provided with a plurality of second positioning planes 222. Along the radial direction of the positioning shaft 22, the second positioning planes 222 are aligned with the first positioning planes 221 one by one. The angle between the first positioning plane 221 and the second positioning plane 222 aligned with it is the positioning angle. The angles of any two positioning angles are equal. The positioning member 32 is also provided with a second positioning arm 323. The second positioning arm 323 is provided with a second mating plane 3231. The second mating plane 3231 is arranged opposite to the first mating plane 3211. The angle formed by the first mating plane 3211 and the second mating plane 3231 is equal to the angle of the positioning angle. When the second positioning arm 323 is inserted into the second positioning through hole 14, the second mating plane 3231 fits against the second positioning plane 222. When the first mating plane 3211 is in contact with the first positioning plane 221, and the second mating plane 3231 is in contact with the second positioning plane 222, the positioning shaft 22 is engaged between the first positioning arm 321 and the second positioning arm 323, thereby improving the stability of the positioning component 32 in radially limiting the positioning shaft 22.

[0028] In some embodiments, please refer to Figure 8 and Figure 9 The propeller holder 1 includes a base 16 and a top cover 15. The base 16 and the top cover 15 are fastened together to form the propeller holder 1. The base 16 and the top cover 15 are provided with a screw connection structure that allows them to be detached and fixed by the screw connection. The top cover 15 is provided with an upper chamber 151, and the base 16 is provided with a lower chamber 161. The base 16 and the top cover 15 are fastened together to connect the upper chamber 151 and the lower chamber 161 to form a receiving channel 11. The first positioning through hole 12, the second positioning through hole 14, and the first screw hole 13 are all provided on the top cover 15 and communicate with the upper chamber 151 respectively.

[0029] The base 16 has several first fixing screw holes 1611 at the bottom of the lower chamber 161. The first fixing screw holes 1611 are used to fix the base 16 to the rotating structure of the propeller 1000 by screws, so that the propeller clamp device 100 is installed on the rotating structure. The upper cover 15 has several recessed features in the areas corresponding to the several first fixing screw holes 1611. The recessed features are used to expose the first fixing screw holes 1611 to the outside, so that the propeller clamp device 100 can be installed and removed without disassembling the propeller base 1.

[0030] In some embodiments, please refer to Figure 4 , Figure 6 , Figure 8 and Figure 9 Along the first direction X, the upper cover 15 has a first groove 152 at the entrance of the receiving channel 11, and the base 16 has a second groove 162 at the entrance of the receiving channel 11. The first groove 152 and the second groove 162 are connected to form a limiting shaft hole 17. The positioning shaft 22 is also provided with a first limiting groove 223. The first limiting groove 223 is an annular groove and is located at one end of the positioning shaft 22 near the connector 23. When the positioning shaft 22 is inserted into the receiving channel 11, the first groove 152 and the second groove 162 are engaged with the first limiting groove 223. Through the cooperation of the limiting shaft hole 17 and the first limiting groove 223, the positioning shaft 22 is axially positioned in the receiving channel 11 along the first direction X.

[0031] In some embodiments, please refer to Figures 10 to 12 The propeller base 1 is an integral structure that cannot be separated. Along the third direction Z, the propeller base 1 has several fixing parts on its two outer walls. Each fixing part is provided with a second fixing screw hole 19. The second screw hole 19 is used to fix the propeller base 1 to the rotating structure of the propeller 1000 by screw fasteners, so as to realize the installation and disassembly of the propeller clamp device 100.

[0032] The propeller clamp device 100 also includes a limiting component 4, which includes a limiting member 41 and a limiting screw connector 42. The limiting member 41 is provided with a limiting portion 411 and a limiting screw hole 412, and the limiting portion 411 is recessed with a limiting groove 4111. The propeller holder 1 is also provided with a slot 18 and a second screw hole 19 on one side along the second direction Y. The slot 18 communicates with the receiving channel 11. The limiting portion 411 is inserted into the slot 18, and the limiting screw connector 42 is screwed into the limiting screw hole 412 and the second screw hole 19 in sequence, locking the limiting member 41 onto the propeller holder 1. The positioning shaft 22 is provided with a second limiting groove 224, which is an annular groove. The second limiting groove 224 is located at the end of the positioning shaft 22 away from the connector 23. When the positioning shaft 22 is inserted into the receiving channel 11, along the second direction Y, the slot 18 is aligned with the second limiting groove 224, and the limiting groove 4111 is engaged with the second limiting groove 224 to realize the axial positioning of the positioning shaft 22 in the receiving channel 11 along the first direction X.

[0033] In some embodiments, please refer to Figure 7 , Figure 13 and Figure 14 The blade support 2 includes an upper support 24 and a lower support 25, which are joined together to form the blade support 2. The upper support 24 includes a first connecting arm 241 and a first rotating shaft 242, and the lower support 25 includes a second connecting arm 251 and a second rotating shaft 252. The first rotating shaft 242 and the second rotating shaft 252 can be connected by bolts or other means to achieve a detachable connection, so as to achieve the docking and fixing of the upper support 24 and the lower support 25. The first rotating shaft 242 and the second rotating shaft 252 are joined together to form a positioning rotating shaft 22. The first connecting arm 241 and the second connecting arm 251 are joined together to form a connector 23. The clamping space formed between the first connecting arm 241 and the second connecting arm 251 is used for the connection part of the blade 200 to be inserted, so that the blade 200 is installed on the connector 23. To ensure the stability of the blades 200 during propeller 1000 operation, the connection structure of the blades 200 and the fitting precision of the connector 23 are usually high to reduce the vibration of the blades 200. Therefore, the blades 200 are usually subject to significant frictional resistance during insertion and removal, making installation and disassembly difficult. However, by separating the blade support 2, the blades 200 and friction pads can be placed in the installation position before the blade support 2 is reassembled to complete the installation. This installation method is convenient and avoids surface friction damage caused by the insertion and removal of the blades 200.

[0034] Specifically, the blade support 2 also includes a positioning pin 26 and a locking screw 27. The first connecting arm 241 is provided with a positioning post 2411, and the second connecting arm 251 is provided with a socket 2511. The positioning pin 26 passes through the socket 2511 and the connecting structure of the blade 200 in sequence, and is sleeved on the positioning post 2411 to install the blade 200 on the blade support 2. The blade 200 can pivot relative to the blade support 2 around the positioning pin 26 to realize the conversion between the working unfolded state and the transport and storage state. The positioning pin 26 is provided with a first locking screw hole 261, and the positioning post 2411 is provided with a second locking screw hole 2411a. When the positioning pin 26 is sleeved on the positioning post 2411, the first locking screw hole 261 and the second locking screw hole 2411a are aligned. The locking screw connector 27 is screwed into the first locking screw hole 261 and the second locking screw hole 2411a in sequence to lock the positioning pin 26 and the positioning post 2411, thereby fixing the positioning pin 26 to the blade support 2.

[0035] In this embodiment of the utility model, the propeller clamping device 100 includes a propeller base 1, a blade support 2, and a positioning component 3. The propeller base 1 has a receiving channel 11 at one end along the first direction X, and a plurality of first positioning through holes 12 at one side along the second direction Y. The plurality of first positioning through holes 12 communicate with the receiving channel 11 and are arranged sequentially along the first direction X. The blade support 2 includes a connector 23 and a positioning shaft 22. The connector 23 is used to install the blade 200, and the positioning shaft 22 is fixed to the connector 23 and movably inserted into the receiving channel 11. The positioning shaft 22 is provided with a plurality of first positioning structures 21. Positioning structure 21 is spirally arranged along the first direction X and aligned with the first positioning through hole 12 along the second direction Y. Positioning assembly 3 includes positioning element 32, which is provided with a first positioning arm 321. The first positioning arm 321 is provided with a first mating structure 31. The first positioning arm 321 is inserted into and fixed to the first positioning through hole 12. The first mating structure 31 mates with the first positioning structure 21 to restrict the pivoting of the positioning shaft 22. When the first positioning arm 321 is inserted into different first positioning through holes 12 and the first mating structure 31 mates with different first positioning structures 21, the deflection angle of the connecting element 23 relative to the propeller seat 1 is different. The positioning block is inserted into the positioning through hole at different positions. Through the mating plane on the positioning arm and the mating with different first positioning structures 21 on the positioning shaft 22, the propeller support 2 is installed on the propeller seat 1 at different angles, thereby changing the installation angle of the propeller blade 200 and realizing the manual pitch adjustment of the propeller 1000. The above methods can simplify the number of parts in the machine, reduce production costs, and make it easier to carry and operate.

[0036] This utility model provides an embodiment of an aircraft, which includes a fuselage, an arm, and the aforementioned propeller 1000. The propeller 1000 is connected to the arm, and the arm is connected to the fuselage. It is understood that the aircraft can be a single-rotor aircraft or a multi-rotor aircraft. For the structure and function of the propeller 1000, please refer to the above embodiment, which will not be repeated here.

[0037] It should be noted that while the preferred embodiments of this utility model are provided in the specification and accompanying drawings, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are not intended to impose additional limitations on the content of this utility model; their purpose is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Furthermore, the above-described technical features can be combined with each other to form various embodiments not listed above, all of which are considered to be within the scope of this utility model specification. Moreover, those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A paddle clamping device, characterized in that, include: The propeller base has a receiving channel at one end along a first direction, and a plurality of first positioning through holes are provided on one side along a second direction. The plurality of first positioning through holes are connected to the receiving channel and are arranged sequentially along the first direction. A propeller support includes a connector and a positioning shaft. The connector is used to install the propeller blades. The positioning shaft is fixed to the connector and can be movably inserted into the receiving channel. The positioning shaft is provided with a plurality of first positioning structures. The plurality of first positioning structures are spirally arranged along a first direction. Along a second direction, one of the first positioning structures is aligned with one of the first positioning through holes. A positioning component includes a positioning member, the positioning member being provided with a first positioning arm, the first positioning arm being provided with a first mating structure, the first positioning arm being inserted into and fixed in a first positioning through hole, the first mating structure mating with the first positioning structure to restrict the pivoting of the positioning shaft, and when the first positioning arm is inserted into different first positioning through holes and the first mating structure mating with different first positioning structures, the deflection angle of the connecting member relative to the propeller seat is different; Wherein, the first direction is the direction in which the positioning shaft is inserted into the receiving channel, and the first direction is perpendicular to the second direction.

2. The propeller clamping device according to claim 1, characterized in that, The first positioning structure is a first positioning plane, and the tilt angles of several first positioning planes relative to the first direction are different; The first mating structure is a first mating plane. When the first mating plane is in contact with the first positioning plane, the positioning member restricts the positioning shaft from pivoting.

3. The paddle clamp device according to claim 2, characterized in that, The propeller base is provided with a plurality of first screw holes on one side along the second direction. The plurality of first screw holes are arranged sequentially along the first direction. Along the third direction, one first screw hole is aligned with one first positioning through hole. The first direction, the second direction and the third direction are perpendicular to each other. The positioning element is provided with a positioning screw hole, and the positioning assembly includes a positioning screw connector. The positioning screw connector passes through the positioning screw hole and is screwed into the first screw hole to lock the positioning element to the propeller seat.

4. The paddle clamp device according to claim 2, characterized in that, The positioning member is further provided with a second positioning arm, the second positioning arm is provided with a second mating plane, and the second mating plane is disposed opposite to the first mating plane; The propeller base is also provided with a plurality of second positioning through holes on one side along the second direction. The plurality of second positioning through holes are connected to the receiving channel. The plurality of second positioning through holes are arranged sequentially along the first direction. Along the third direction, a second positioning through hole is aligned with a first positioning through hole. The positioning shaft is also provided with a plurality of second positioning planes. Along the radial direction of the positioning shaft, a second positioning plane is aligned with a first positioning plane. The angle formed by the first positioning plane and the aligned second positioning plane is a positioning angle. Any two positioning angles are equal in angle and are equal in angle to the angle formed by the first mating plane and the second mating plane. The second positioning arm is inserted into the second positioning through hole, and the second mating plane is in contact with the second positioning plane.

5. The propeller clamping device according to claim 4, characterized in that, The propeller base includes a base and a top cover. The base and the top cover are detachably fixed. The top cover is provided with an upper chamber, and the base is provided with a lower chamber. The upper chamber and the lower chamber are connected to form the receiving channel. The positioning matrix is ​​provided on the top cover.

6. The propeller clamping device according to claim 5, characterized in that, The upper cover is provided with a first groove at the entrance of the receiving channel along the first direction, and the base is provided with a second groove at the entrance of the receiving channel along the first direction. The first groove and the second groove are connected to form a limiting shaft hole. The positioning shaft is also provided with a first limiting groove, which is recessed and surrounds one end of the positioning shaft near the connector. The positioning shaft is received in the limiting shaft hole, and the first groove and the second groove are engaged with the first limiting groove to restrict the positioning shaft within the receiving channel.

7. The propeller clamping device according to claim 4, characterized in that, The positioning shaft is provided with a second limiting groove, which is recessed and surrounds the end of the positioning shaft away from the connector. The propeller seat is also provided with a slot and a second screw hole. The slot communicates with the receiving channel. Along the second direction, the slot is aligned with the second limiting groove. The propeller clamp device further includes a limiting component, which includes a limiting member and a limiting screw connector. The limiting member is provided with a limiting portion and a limiting screw hole. The limiting portion is recessed with a limiting groove. The limiting portion is movably inserted into the slot. The limiting groove is engaged with the second limiting groove to restrict the positioning shaft within the receiving channel. The limiting screw connector is sequentially screwed into the limiting screw hole and the second screw hole to lock the limiting member to the propeller seat.

8. The propeller clamping device according to any one of claims 1-7, characterized in that, The blade support includes an upper support and a lower support. The upper support includes a first connecting arm and a first rotating shaft. The lower support includes a second connecting arm and a second rotating shaft. The first rotating shaft and the second rotating shaft are detachably connected so that the first rotating shaft and the second rotating shaft are mated to form the positioning shaft. The first connecting arm and the second connecting arm are mated to form the connecting member.

9. A propeller, characterized in that, Includes the propeller clamp device as described in any one of claims 1-8.

10. An aircraft, characterized in that, Including the propeller as described in claim 9.

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