Folding paddle

Abstract

The utility model discloses a folding paddle which comprises three paddle blades arranged at intervals and a paddle clamp structure used for installing the three paddle blades. The three paddles can rotate relative to the paddle clamp structure; the paddle clamp structure comprises an upper paddle clamp piece and a lower paddle clamp piece which are arranged up and down, three mounting parts used for mounting the paddles are formed after the upper paddle clamp piece is assembled to the lower paddle clamp piece, and mounting ends capable of being matched with the mounting parts are arranged at the ends, close to the paddle clamp structure, of the three paddles; and the three blades can rotate around the mounting part. The paddle can rotate relative to the paddle clamp structure, the folding function is achieved, and storage and transportation are convenient; through the structure of the upper paddle clamp and the lower paddle clamp, the paddles are firmly installed, and good mobility is kept; due to the adaptive design of the mounting end and the mounting part, the paddle can reliably rotate around the mounting part and is convenient to unfold and fold; and the three blades are arranged at intervals, so that the propelling efficiency and the stability are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of folding propellers, and more particularly to a folding propeller. Background Technology

[0002] In recent years, the consumer drone market has been booming, with drones of various structural forms emerging one after another. Since the target audiences are from all walks of life and have very different technical levels, consumer drones need to be as simple to operate as possible. Take propellers as an example: drones need to be installed when in use, and they need to be disassembled for easy storage when not in use. This places certain requirements on the assembly and disassembly of propellers. In addition, drone propellers take up a lot of space. If drone propellers can be quickly assembled and disassembled and can be folded, it will not only make it easier for consumers to disassemble, but also reduce storage space and make them easier to carry. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] The technical problem to be solved by this utility model is to provide a folding propeller, in which the propeller blade can rotate relative to the propeller clamp structure to realize the folding function, which is convenient for storage and transportation; the structure of the upper and lower propeller clamps makes the propeller blade firmly installed while maintaining good mobility; the matching design of the mounting end and the mounting part ensures that the propeller blade can reliably rotate around the mounting part, which is convenient for unfolding and folding.

[0005] (II) Technical Solution

[0006] The solution adopted by this utility model to solve the above-mentioned technical problem is a folding propeller, including three spaced-apart blades and a propeller clamping structure for mounting the three blades; wherein, the three blades are rotatable relative to the propeller clamping structure; the propeller clamping structure includes an upper propeller clamp and a lower propeller clamp arranged vertically, and after the upper propeller clamp is assembled to the lower propeller clamp, it forms three mounting portions for mounting the blades, and the three blades are provided with mounting ends that can be adapted to the mounting portions at one end near the propeller clamping structure, so that the three blades can rotate around the mounting portions.

[0007] Specifically, the folding propellers make it easy for pilots to carry and save space in the overall aircraft; moreover, the centrifugal force of the three propellers is very large during flight, so they will be fully extended once they start spinning.

[0008] The above scheme allows the blades to rotate relative to the blade clamp structure, enabling folding for easy storage and transportation. The structure of the upper and lower blade clamps ensures the blades are securely installed while maintaining good mobility. The matching design between the mounting end and the mounting part ensures the blades can reliably rotate around the mounting part, facilitating unfolding and retraction. At the same time, the use of three spaced blades improves propulsion efficiency and stability.

[0009] In some embodiments, the upper propeller clamp includes an upper propeller cover, the bottom end of which extends downward to form three spaced mounting posts; the lower propeller clamp includes a lower propeller cover, the top end of which extends upward to form three spaced mounting portions, each mounting portion having a mounting groove, and the mounting posts being adaptable to the mounting groove.

[0010] The above scheme ensures that the mounting post formed by the extension of the upper blade clamp is compatible with the mounting groove of the lower blade clamp, thereby enhancing the structural connection strength. The matching design of the mounting post and the mounting groove simplifies the assembly process and improves production efficiency. The spaced mounting posts and mounting parts ensure uniform distribution of blades and improve rotational balance.

[0011] In some embodiments, the mounting end includes a mounting shaft, which has a mounting hole that can be adapted to the mounting part; and after the blade is assembled to the mounting part, the top end of the mounting shaft contacts the upper blade clamp, and the bottom end of the mounting shaft contacts the lower blade clamp.

[0012] With the above solution, the mounting holes inside the mounting shaft are adapted to the mounting part, ensuring the accuracy and stability of the blade installation; the top and bottom ends of the mounting shaft contact the upper and lower blade clamps respectively, forming axial limit to prevent the blade from falling off; this structure allows the blade to rotate freely around the mounting part while maintaining axial stability.

[0013] In some embodiments, the bottom end of the upper propeller clamp extends downward from the middle to form a first fixing post, and the bottom end of the fixing post extends downward from the middle to form a second fixing post, wherein the size of the second fixing post is smaller than the size of the first fixing post; and the middle of the lower propeller clamp is provided with a fixing hole that can be adapted to the second fixing post; and the axial dimension of the first fixing post is the same as the dimension of the mounting part.

[0014] The above-mentioned scheme features a stepped design for the first and second fixing posts, which enhances the strength of the central connection. The second fixing post is smaller than the first fixing post, which facilitates precise matching with the fixing holes of the lower propeller clamp. The design of the first fixing post being the same size as the mounting part ensures overall structural coordination and improves assembly accuracy.

[0015] In some embodiments, the upper paddle clamp includes an upper mounting wall, the outer edge of which extends radially outward to form three spaced-apart upper radial protrusions; and the bottom end of the upper mounting wall extends downward at the middle to form the first fixing post and the second fixing post; the bottom ends of the three upper radial protrusions extend downward at the middle to form the mounting post;

[0016] The lower propeller cover includes a lower mounting wall, the outer edge of which extends radially outward to form three spaced-apart lower radial protrusions; and the top of the lower mounting wall is provided with the fixing hole at the middle position; the tops of the three upper radial protrusions extend downward at the middle position to form the mounting portion.

[0017] The above scheme, with its upper and lower radial protrusions, increases the strength and rigidity of the paddle clamp structure. The radial extension structure of the upper and lower mounting walls forms a stable support frame, improving the overall structural strength. The radial layout design makes the force distribution more uniform, reduces stress concentration, and extends the service life.

[0018] In some embodiments, the three mounting posts are respectively arranged on the outer periphery of the first fixed post, and the first fixed post has an arc-shaped surface facing the outer wall of the three mounting posts to avoid the mounting end of the blade.

[0019] The above-mentioned design, with its arc-shaped surface on the outer wall of the first fixed column, effectively avoids interference with the blade mounting end. The arc-shaped surface optimizes the spatial layout, allowing the blade to rotate around the mounting part without obstruction, reducing friction and collision between components, and extending the service life of the components.

[0020] In some embodiments, the upper propeller clamp is provided with a through hole at the middle, penetrating the upper mounting wall, the first fixing post, and the second fixing post, so as to assemble the folding propeller to the external structure.

[0021] The above-mentioned through hole in the middle facilitates the assembly of the folding paddle onto the external structure, improving installation convenience; and the design of penetrating the upper mounting wall, the first fixing post, and the second fixing post ensures connection strength and stability.

[0022] In some embodiments, the three mounting portions are arranged at equal intervals along the circumferential direction.

[0023] The above scheme arranges the three mounting parts at equal intervals along the circumference to ensure uniform force on the blades, improve rotational balance, reduce vibration and noise, improve operational stability, optimize hydrodynamic performance, and improve propulsion efficiency.

[0024] In some embodiments, the blade includes a mounting end and a blade formed by a portion of the outer wall of the mounting end extending radially.

[0025] The above-mentioned design, which integrates the mounting end and the blade, improves structural strength and reduces the risk of connection failure. The design of the blade extending radially from part of the outer wall of the mounting end optimizes the space occupied in the folded state, simplifies the manufacturing process, reduces production costs, and ensures performance.

[0026] (III) Beneficial Effects

[0027] Compared with the existing technology, this utility model designs a folding paddle.

[0028] (1) The blades of this utility model can rotate relative to the blade clamp structure to achieve folding function, which is convenient for storage and transportation; the structure of the upper and lower blade clamps makes the blades firmly installed while maintaining good mobility; the matching design of the mounting end and the mounting part ensures that the blades can reliably rotate around the mounting part, which is convenient for unfolding and folding; at the same time, the use of three spaced blades improves propulsion efficiency and stability.

[0029] (2) The mounting column formed by the extension of the upper blade clamp cover of this utility model is adapted to the mounting groove of the lower blade clamp cover, which enhances the structural connection strength; the matching design of the mounting column and the mounting groove simplifies the assembly process and improves production efficiency; the spaced mounting columns and mounting parts can ensure that the blades are evenly distributed and improve the rotational balance.

[0030] (3) The setting of the upper radial protrusion and the lower radial protrusion of this utility model increases the strength and rigidity of the paddle clamp structure. The radial extension structure of the upper and lower mounting walls forms a stable support frame, which improves the overall structural strength. The radial layout design makes the force distribution more uniform, reduces stress concentration, and extends the service life.

[0031] (4) The arc-shaped surface design of the outer wall of the first fixed column of this utility model effectively avoids the blade mounting end and prevents interference; the arc-shaped surface optimizes the spatial layout, allowing the blade to rotate around the mounting part without obstruction, reducing friction and collision between components and extending the service life of the components.

[0032] (5) The three mounting parts of this utility model are arranged at equal intervals along the circumference to ensure uniform force on the blades, improve rotational balance, reduce vibration and noise, improve operational stability, optimize hydrodynamic performance, and improve propulsion efficiency. Furthermore, the integrated design of the mounting end and the blade improves structural strength and reduces the risk of connection failure. The design of the blade extending radially from part of the outer wall of the mounting end optimizes the space occupation in the folded state, simplifies the manufacturing process, reduces production costs, and ensures performance. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments 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 these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of a folding paddle according to the present invention;

[0035] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0036] Figure 3 This is an exploded view of a folding paddle according to the present invention;

[0037] Figure 4 for Figure 3 Enlarged view of point B in the middle;

[0038] Figure 5 This is a schematic diagram of another angle of the folding paddle of this utility model;

[0039] Figure 6 for Figure 5 Sectional view at CC;

[0040] Figure 7 for Figure 6 Enlarged diagram of point D in the middle.

[0041] The component names corresponding to the various reference numerals in the figure are as follows: 100, blade; 101, mounting end; 102, mounting shaft; 1021, mounting hole; 103, blade; 200, blade clamp structure; 201, upper blade clamp; 2011, upper blade clamp cover; 2012, mounting post; 2013, first fixing post; 2013a, arc-shaped surface; 2014, second fixing post; 2015, upper mounting wall; 2016, upper radial protrusion; 202, lower blade clamp; 2021, lower blade clamp cover; 2022, fixing hole; 2023, lower mounting wall; 2024, lower radial protrusion; 203, mounting part; 2031, mounting groove; 204, through hole. Detailed Implementation

[0042] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0045] It should be noted that the following description covers various aspects of embodiments within the scope of the appended claims. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0046] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0047] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0048] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0049] like Figures 1-7As shown, this utility model provides a folding propeller, including three spaced-apart propeller blades 100 and a propeller clamping structure 200 for mounting the three propeller blades 100. The three propeller blades 100 are rotatable relative to the propeller clamping structure 200. The propeller clamping structure 200 includes an upper propeller clamp 201 and a lower propeller clamp 202 arranged vertically. After the upper propeller clamp 201 is assembled to the lower propeller clamp 202, it forms three mounting portions 203 for mounting the propeller blades 100. Each of the three propeller blades 100 has a mounting end 101 near the propeller clamping structure 200 that can be adapted to the mounting portion 203, allowing the three propeller blades 100 to rotate around the mounting portion 203. Specifically, the folding propeller blades 100 are convenient for pilots to carry, saving overall storage space. Furthermore, during flight, the centrifugal force of the three propeller blades 100 is significant, ensuring they are fully extended once they begin to rotate. Using the above scheme, the blade 100 can rotate relative to the blade clamp structure 200, realizing a folding function for easy storage and transportation; the structure of the upper and lower blade clamps 202 ensures that the blade 100 is firmly installed while maintaining good mobility; the matching design between the mounting end 101 and the mounting part 203 ensures that the blade 100 can reliably rotate around the mounting part 203, facilitating unfolding and folding; at the same time, the use of three spaced blades 100 improves propulsion efficiency and stability.

[0050] In some embodiments, the upper propeller clamp 201 includes an upper propeller cover 2011, the bottom end of which extends downward to form three spaced-apart mounting posts 2012; the lower propeller clamp 202 includes a lower propeller cover 2021, the top end of which extends upward to form three spaced-apart mounting portions 203, each mounting portion 203 having a mounting groove 2031, and the mounting posts 2012 fitting into the mounting groove 2031. With this design, the mounting posts 2012 extending from the upper propeller cover 2011 fit into the mounting groove 2031 of the lower propeller cover 2021, enhancing structural connection strength; the matching design of the mounting posts 2012 and mounting groove 2031 simplifies the assembly process and improves production efficiency; the spaced-apart mounting posts 2012 and mounting portions 203 ensure uniform distribution of the propeller blades 100, improving rotational balance. In some embodiments, the mounting end 101 includes a mounting shaft 102, which has a mounting hole 1021 that can be adapted to the mounting part 203. After the blade 100 is assembled to the mounting part 203, the top end of the mounting shaft 102 contacts the upper blade clamp 2011, and the bottom end of the mounting shaft 102 contacts the lower blade clamp 2021. With this design, the mounting hole 1021 in the mounting shaft 102 is adapted to the mounting part 203, ensuring the accuracy and stability of the blade 100 installation. The top and bottom ends of the mounting shaft 102 contact the upper and lower blade clamps 2021 respectively, forming an axial limit to prevent the blade 100 from falling off. This structure allows the blade 100 to rotate freely around the mounting part 203 while maintaining axial stability.

[0051] In some embodiments, the bottom end of the upper propeller clamp 2011 extends downward from the middle to form a first fixing post 2013, and the bottom end of the fixing post extends downward from the middle to form a second fixing post 2014, wherein the size of the second fixing post 2014 is smaller than the size of the first fixing post 2013; and the middle of the lower propeller clamp 2021 is provided with a fixing hole 2022 that can accommodate the second fixing post 2014; and the axial dimension of the first fixing post 2013 is the same as the dimension of the mounting part 203. With the above scheme, the stepped design of the first fixing post 2013 and the second fixing post 2014 enhances the central connection strength; the size of the second fixing post 2014 is smaller than that of the first fixing post 2013, facilitating precise matching with the fixing hole 2022 of the lower propeller clamp 2021; the design that the first fixing post 2013 and the mounting part 203 are the same size ensures overall structural coordination and improves assembly accuracy. In some embodiments, the upper propeller clamp 2011 includes an upper mounting wall 2015, the outer edge of which extends radially outward to form three spaced-apart upper radial protrusions 2016; and the bottom end of the upper mounting wall 2015 extends downward at the middle to form the first fixing post 2013 and the second fixing post 2014; the bottom ends of the three upper radial protrusions 2016 extend downward at the middle to form the mounting post 2012; the lower propeller clamp 2021 includes a lower mounting wall 2023, the outer edge of which extends radially outward to form three spaced-apart lower radial protrusions 2024; and the top end of the lower mounting wall 2023 is provided with the fixing hole 2022 at the middle; the top ends of the three upper radial protrusions 2016 extend downward at the middle to form the mounting portion 203. By adopting the above scheme, the setting of the upper radial protrusion 2016 and the lower radial protrusion 2024 increases the strength and rigidity of the paddle clamp structure 200, and the radial extension structure of the upper and lower mounting walls 2023 forms a stable support frame, improving the overall structural strength; the radial layout design makes the force distribution more uniform, reduces stress concentration, and extends service life.

[0052] In some embodiments, the three mounting posts 2012 are respectively arranged on the outer periphery of the first fixing post 2013, and the outer wall of the first fixing post 2013 facing the three mounting posts 2012 is provided with an arc-shaped surface 2013a to avoid the mounting end 101 of the blade 100. With the above solution, the arc-shaped surface 2013a design of the outer wall of the first fixing post 2013 effectively avoids the mounting end 101 of the blade 100, preventing interference; the arc-shaped surface 2013a optimizes the spatial layout, allowing the blade 100 to rotate around the mounting portion 203 without obstruction, reducing friction and collision between components, and extending the service life of the components.

[0053] In some embodiments, the upper propeller clamp 2011 has a through hole 204 at its center, penetrating the upper mounting wall 2015, the first fixing post 2013, and the second fixing post 2014, to assemble the folding propeller to the external structure. With this design, the through hole 204 at the center facilitates the assembly of the folding propeller to the external structure, improving installation convenience; and the design penetrating the upper mounting wall 2015, the first fixing post 2013, and the second fixing post 2014 ensures connection strength and stability. In some embodiments, the three mounting portions 203 are arranged at equal intervals along the circumferential direction. With this design, the three mounting portions 203 are arranged at equal intervals along the circumferential direction, ensuring uniform force on the propeller blade 100, improving rotational balance, reducing vibration and noise, improving operational stability, optimizing hydrodynamic performance, and increasing propulsion efficiency. In some embodiments, the propeller blade 100 includes a mounting end 101 and blades 103 formed by a portion of the outer wall of the mounting end 101 extending radially. The above-mentioned design integrates the mounting end 101 and the blade 103, which improves the structural strength and reduces the risk of connection failure. The design of the blade 103 extending radially from part of the outer wall of the mounting end 101 optimizes the space occupation in the folded state, simplifies the manufacturing process, reduces production costs, and ensures performance.

[0054] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments.

[0055] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A folding paddle, characterized in that: The device includes three spaced-apart blades (100) and a blade clamp structure (200) for mounting the three blades (100); wherein the three blades (100) are rotatable relative to the blade clamp structure (200); the blade clamp structure (200) includes an upper blade clamp (201) and a lower blade clamp (202) arranged vertically, and the upper blade clamp (201) is assembled to the lower blade clamp (202) to form three mounting portions (203) for mounting the blades (100), and the three blades (100) are provided with mounting ends (101) that can be adapted to the mounting portions (203) at one end near the blade clamp structure (200) so that the three blades (100) can rotate around the mounting portions (203).

2. The folding paddle according to claim 1, characterized in that: The upper propeller clamp (201) includes an upper propeller cover (2011), the bottom end of which extends downward to form three spaced mounting posts (2012); the lower propeller clamp (202) includes a lower propeller cover (2021), the top end of which extends upward to form three spaced mounting portions (203), each mounting portion (203) having a mounting groove (2031), and the mounting posts (2012) being adaptable to the mounting groove (2031).

3. The folding paddle according to claim 2, characterized in that: The mounting end (101) includes a mounting shaft (102), which has a mounting hole (1021) that can be adapted to the mounting part (203). After the blade (100) is assembled to the mounting part (203), the top end of the mounting shaft (102) contacts the upper blade clamp (2011), and the bottom end of the mounting shaft (102) contacts the lower blade clamp (2021).

4. The folding paddle according to claim 2, characterized in that: The bottom end of the upper propeller clamp (2011) extends downward from the middle to form a first fixing post (2013), and the bottom end of the fixing post extends downward from the middle to form a second fixing post (2014). The size of the second fixing post (2014) is smaller than that of the first fixing post (2013). The lower propeller clamp (2021) has a fixing hole (2022) in the middle that can be fitted with the second fixing post (2014). The axial dimension of the first fixing post (2013) is the same as that of the mounting part (203).

5. The folding paddle according to claim 4, characterized in that: The upper paddle clamp cover (2011) includes an upper mounting wall (2015), the outer edge of which extends radially outward to form three spaced upper radial protrusions (2016); and the bottom end of the upper mounting wall (2015) extends downward at the middle to form the first fixing post (2013) and the second fixing post (2014); the bottom ends of the three upper radial protrusions (2016) extend downward at the middle to form the mounting post (2012); The lower propeller cover (2021) includes a lower mounting wall (2023), the outer edge of which extends radially outward to form three spaced-apart lower radial protrusions (2024); and the top of the lower mounting wall (2023) is provided with the fixing hole (2022) at the middle position; the tops of the three upper radial protrusions (2016) extend downward at the middle position to form the mounting portion (203).

6. The folding paddle according to claim 5, characterized in that: The three mounting posts (2012) are respectively arranged on the outer periphery of the first fixing post (2013), and the first fixing post (2013) is provided with an arc-shaped surface (2013a) facing the outer wall of the three mounting posts (2012) to avoid the mounting end (101) of the blade (100).

7. The folding propeller according to claim 5, characterized in that: The upper propeller clamp (2011) is provided with a through hole (204) in the middle, which passes through the upper mounting wall (2015), the first fixing post (2013) and the second fixing post (2014) to assemble the folding propeller to the external structure.

8. The folding paddle according to claim 1, characterized in that: The three mounting parts (203) are arranged at equal intervals along the circumference.

9. The folding paddle according to claim 1, characterized in that: The blade (100) includes a mounting end (101) and a blade (103) formed by a portion of the outer wall of the mounting end (101) extending radially.

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