Unmanned aerial vehicle propeller arm folding device

Abstract

The utility model is applicable to the technical field of unmanned aerial vehicles, and provides an unmanned aerial vehicle propeller arm folding device which comprises a first suite and a second suite which are assembled between a propeller arm rod and a connecting arm, the first suite is composed of a first arc-shaped block and a second arc-shaped block, and the second suite is composed of a third arc-shaped block and a fourth arc-shaped block. The first arc-shaped block and the third arc-shaped block are connected through a first assembling part, the second arc-shaped block and the fourth arc-shaped block are rotatably connected through a second assembling part, and a locking mechanism is arranged between the first sleeve piece and the second sleeve piece. And the locking part is used for locking the first sleeve part and the second sleeve part between the folded state and the unfolded state. According to the unmanned aerial vehicle propeller arm folding device, the folding and unfolding functions of the vehicle arms are achieved, the overall size of an unmanned aerial vehicle is remarkably reduced, and the unmanned aerial vehicle is more convenient to carry and transport.

Description

Technical Field

[0001] The utility model belongs to the technical field of unmanned aerial vehicles, and in particular relates to a propeller arm folding device for unmanned aerial vehicles. Background Art

[0002] With the continuous development of drone technology, drones are being used more and more widely in aerial photography, reconnaissance, agriculture, logistics and other fields; however, the portability and transportability of drones have always been the key factors restricting their further popularization.

[0003] Traditional UAV arm designs are often fixed, which not only increases the overall size of the UAV, but also increases the difficulty of carrying and transporting it. Therefore, how to design a device that can meet the structural strength requirements of the UAV and achieve arm folding to reduce the volume has become an urgent problem to be solved in the current UAV technology field. Utility Model Content

[0004] The utility model provides a folding device for propeller arms of unmanned aerial vehicles, aiming to solve the problem that the traditional design of unmanned aerial vehicle arms adopts a fixed type, which not only increases the overall size of the unmanned aerial vehicle, but also increases the difficulty of carrying and transporting, which greatly limits the application scope and portability of the unmanned aerial vehicle.

[0005] The utility model is implemented as follows: a propeller arm folding device for a drone comprises: a first kit and a second kit assembled between a propeller arm rod and a connecting arm, wherein the first kit is composed of a first arc block and a second arc block, the second kit is composed of a third arc block and a fourth arc block, the first arc block is connected to the third arc block via a first assembly portion, the second arc block is rotatably connected to the fourth arc block via a second assembly portion, and a locking mechanism is provided between the first kit and the second kit for locking the first kit and the second kit between a folded state and an unfolded state.

[0006] Preferably, the locking mechanism includes: a first connecting part arranged on the second arc block, the first connecting part and the second assembly part are locked by a pin, and the pin can be inserted or pulled out to control the locking and unlocking of the first kit and the second kit; a second connecting part arranged on the first arc block, and the second connecting part and the first assembly part are hingedly limited by another pin.

[0007] Preferably, a bearing is provided on the inner side of the first assembly portion to ensure smooth rotation between the first assembly set and the second assembly set.

[0008] Preferably, the contact surfaces of the first arc block and the second arc block, and the contact surfaces of the third arc block and the fourth arc block are all provided with rubber pads to improve the sealing of the joints.

[0009] Preferably, the first kit and the second kit are both formed by CNC machining to ensure their structural accuracy and stability.

[0010] Preferably, the first arc block and the second arc block, and the third arc block and the fourth arc block are fastened together by screws.

[0011] Preferably, both the first assembly portion and the second assembly portion are provided with assembly holes, and the assembly holes are used to install the pin.

[0012] Compared with the related art, the UAV propeller arm folding device provided by the utility model has the following advantages:

[0013] Beneficial effects:

[0014] Through the design of the first kit and the second kit, the device realizes the folding and unfolding functions of the arm, significantly reducing the overall size of the drone, making it more convenient to carry and transport; secondly, the optimized locking mechanism provides a stable and convenient locking and unlocking mechanism through the cooperation of the pin and the connecting part, enhances the stability of the arm state and simplifies the operation steps; thirdly, the bearing added on the inner side of the first assembly part effectively reduces the friction resistance, making the rotation of the arm smoother and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the assembly of a propeller arm folding device for a drone provided by the utility model;

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 3 for Figure 2 Schematic diagram of the folding structure;

[0018] Figure 4 It is a structural schematic diagram of the first kit in the utility model.

[0019] Figure numerals: 1, propeller arm; 2, first kit; 3, second kit; 4, first arc block; 5, second arc block; 6, third arc block; 7, first assembly part; 8, fourth arc block; 9, second assembly part; 10, first connecting part; 11, second connecting part; 12, pin; 13, connecting arm; 14, screw; 15, rubber pad; 16, assembly hole. DETAILED DESCRIPTION

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The utility model provides a propeller arm folding device for a drone, such as Figure 1-4 As shown, the drone propeller arm folding device includes: a first kit 2 and a second kit 3 assembled between the propeller arm rod 1 and the connecting arm 13, wherein the first kit 2 is composed of a first arc block 4 and a second arc block 5, and the second kit 3 is composed of a third arc block 6 and a fourth arc block 8, the first arc block 4 and the third arc block 6 are connected by a first assembly part 7, the second arc block 5 and the fourth arc block 8 are rotatably connected by a second assembly part 9, and a locking mechanism is provided between the first kit 2 and the second kit 3 for locking the first kit 2 and the second kit 3 between the folded state and the unfolded state.

[0023] It should be noted that the traditional UAV arm design usually adopts a fixed structure, that is, the arm is directly connected to the fuselage and cannot be folded or retracted. Although this design ensures the stability and structural strength of the arm during flight, it also brings a series of problems accordingly; first, the fixed arm design makes the overall size of the UAV larger. Although this helps to provide sufficient support and stability when the UAV is flying, the larger size becomes a big problem during the carrying and transportation of the UAV. Whether putting the UAV in a backpack, suitcase or vehicle, it is necessary to consider whether its size is appropriate, which undoubtedly increases the difficulty of carrying and transportation; secondly, the fixed arm design also limits the application scenarios of UAVs. In some special environments, such as small spaces or occasions that require rapid deployment, traditional UAVs may not be able to enter smoothly or unfold quickly due to their large size. This limits the scope of use and flexibility of UAVs to a certain extent; therefore, designing a device that can not only meet the structural strength requirements of UAVs, but also realize the folding of arms to reduce the volume has become an urgent problem to be solved in the current field of UAV technology;

[0024] In this embodiment, the drone propeller arm folding device is mainly based on the design and application of the first kit 2 and the second kit 3. The first kit 2 and the second kit 3 are respectively assembled between the propeller arm rod 1 and the connecting arm 13 to realize the folding and unfolding functions of the machine arm. The first kit 2 is composed of a first arc block 4 and a second arc block 5, which together form a structure that can rotate around a certain axis. The second kit 3 is composed of a third arc block 6 and a fourth arc block 8, which are similar to the first kit 2 and also form a rotatable structure. The first arc block 4 and the third arc block 6 are connected by a first assembly part 7, and this connection ensures the synchronous movement of the two when the machine arm is folded or unfolded. The second arc block 5 and the fourth arc block 8 are rotatably connected by a second assembly part 9, which means that they can rotate relative to each other, thereby realizing the folding or unfolding of the machine arm. A locking mechanism is provided between the first kit 2 and the second kit 3, and the key function of this mechanism is to ensure that the machine arm can remain stable after folding or unfolding to prevent accidental folding or unfolding. By adopting a folding design, the drone propeller arm folding device significantly reduces the overall size of the drone in the folded state. This design makes the drone more convenient to carry and transport, and can be easily put into a backpack, suitcase or vehicle without worrying about the trouble caused by the large size; because the drone propeller arm folding device can realize the folding and unfolding of the arm, the use scenarios of the drone have been greatly broadened. Whether operating in a small space or in situations where rapid deployment is required, the arms can be folded or unfolded to adapt to different environmental requirements; although the folding function of the arm is realized, the requirements of structural strength and stability are fully considered in the design and manufacturing process of the drone propeller arm folding device. By using high-strength materials and optimizing the structural design, it is ensured that the arm can maintain sufficient structural strength and stability in both the folded and unfolded states, thereby ensuring the flight safety and stability of the drone.

[0025] In a further preferred embodiment of the utility model, the locking mechanism includes: a first connecting portion 10 arranged on the second arc block 5, wherein the first connecting portion 10 and the second assembly portion 9 are locked by a pin 12, and the pin 12 can be inserted or pulled out to control the locking and unlocking of the first set 2 and the second set 3; a second connecting portion 11 arranged on the first arc block 4, wherein the second connecting portion 11 and the first assembly portion 7 are hingedly limited by another pin 12.

[0026] In this embodiment, the design of the locking mechanism is further optimized and refined to provide a more stable and convenient locking and unlocking mechanism; a first connecting portion 10 is provided on the second arc block 5, and this design provides a clear connection point for the locking mechanism; the first connecting portion 10 and the second assembly portion 9 are locked by a pin 12, and the insertion of the pin 12 can firmly connect the two components to prevent their relative movement, thereby locking the state of the machine arm; by controlling the insertion or extraction of the pin 12, the user can easily achieve the locking and unlocking between the first set 2 and the second set 3, and the operation is simple and fast; a second connecting portion 11 is provided on the first arc block 4, which also provides a stable connection point for the locking mechanism; the second connecting portion 11 and the first assembly portion 7 are articulated and limited by another pin 12. This design not only ensures the synchronous movement of the first set 2 and the second set 3 when the machine arm is folded or unfolded, but also limits their relative rotation range, thereby increasing the stability of the structure; by using the cooperation of the pin 12 with the first connecting portion 10 and the second connecting portion 11, the user can easily achieve the locking and unlocking of the machine arm. This design simplifies the operation steps and improves the convenience of operation; the close combination of the pin 12 and the connecting part ensures the stability of the arm in the folded or unfolded state. Whether in the locked state or the unlocked state, the arm can maintain sufficient structural strength to prevent accidental folding or unfolding; through the design of hinged limit, the cooperation between the pin 12 and the second connecting part 11 limits the rotation range of the arm, avoiding structural damage or safety hazards caused by excessive rotation. This provides a strong guarantee for the safe flight of the drone.

[0027] In a further preferred embodiment of the present invention, a bearing is disposed on the inner side of the first assembly portion 7 to ensure smooth rotation between the first assembly member 2 and the second assembly member 3 .

[0028] In this embodiment, a bearing is added inside the first assembly part 7. A bearing is a mechanical element used to support and reduce friction, which allows two parts to rotate relative to each other while reducing friction and wear; by arranging the bearing inside the first assembly part 7, smooth rotation between the first set 2 and the second set 3 is ensured, and when the machine arm is folded or unfolded, the bearing can reduce friction resistance, making the rotation smoother and easier.

[0029] In a further preferred embodiment of the present invention, the contact surfaces of the first arc block 4 and the second arc block 5, the third arc block 6 and the fourth arc block 8 are all provided with rubber pads 15 to improve the sealing of the joints.

[0030] In this embodiment, rubber pads 15 are provided between the contact surfaces of the first arc block 4 and the second arc block 5, and between the contact surfaces of the third arc block 6 and the fourth arc block 8. The rubber pads 15, as a soft material with a certain elasticity, can fill the tiny gap between the two contact surfaces, thereby effectively reducing or eliminating the gap.

[0031] In a further preferred embodiment of the utility model, the first set 2 and the second set 3 are both formed by CNC machining to ensure their structural accuracy and stability.

[0032] In this embodiment, CNC machining is a technology that uses a computer numerical control system to control machine tools for precision machining. It can achieve high-precision and high-efficiency parts machining and is widely used in the manufacture of various mechanical parts. The first set 2 and the second set 3 are both formed by CNC machining. This means that their manufacturing process is completed under the control of a computer, ensuring that the size, shape and surface quality of each part meet the design requirements.

[0033] In a further preferred embodiment of the present invention, the first arc block 4 and the second arc block 5 , the third arc block 6 and the fourth arc block 8 are fastened together by screws 14 .

[0034] In this embodiment, the first arc block 4 and the second arc block 5, as well as the third arc block 6 and the fourth arc block 8, are fastened together by screws 14; as a common fastener, the screws 14 have the characteristics of simple structure, convenient installation, and firm connection. By selecting the appropriate specifications and tightening force of the screws 14, the tight connection and stable fixation between the arc blocks can be ensured.

[0035] In a further preferred embodiment of the present invention, both the first assembly portion 7 and the second assembly portion 9 are provided with assembly holes 16 , and the assembly holes 16 are used for installing the pin 12 .

[0036] In this embodiment, assembly holes 16 are provided on the first assembly portion 7 and the second assembly portion 9. These assembly holes 16 are designed for installing the pins 12. They provide channels for the pins 12 to pass through, ensuring that the pins 12 can be accurately installed in the predetermined positions. By providing the assembly holes 16 on the assembly portions, the installation process of the pins 12 is made simpler and more intuitive, and the installation accuracy and stability are also improved.

[0037] In summary, the drone propeller arm folding device provided by this technical solution successfully solves the problems caused by the traditional fixed arm design through clever design and practical functions, improves the portability and flexibility of the drone application scenarios, and ensures the structural strength and stability. This innovative design is of great significance to promoting the development and application of drone technology.

[0038] Compared with the related art, through the design of the first kit 2 and the second kit 3, the device realizes the folding and unfolding functions of the arm, significantly reducing the overall size of the drone, making it more convenient to carry and transport; secondly, the optimized locking mechanism provides a stable and convenient locking and unlocking mechanism through the cooperation of the pin 12 and the connecting part, enhances the stability of the arm state, and simplifies the operation steps; furthermore, the bearing added on the inner side of the first assembly part 7 effectively reduces the friction resistance, making the rotation of the arm smoother and improving the user experience.

[0039] It is worth noting that the circuits, electronic components and modules involved in the present utility model are all prior art and can be fully implemented by those skilled in the art. Needless to say, the content protected by the present utility model does not involve improvements to software and methods.

[0040] In the several embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the above-mentioned units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0041] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A drone propeller arm folding device, characterized in that: include: A first kit and a second kit are assembled between a propeller arm and a connecting arm, wherein the first kit is composed of a first arc block and a second arc block, and the second kit is composed of a third arc block and a fourth arc block, the first arc block and the third arc block are connected via a first assembly portion, the second arc block and the fourth arc block are rotatably connected via a second assembly portion, and a locking mechanism is provided between the first kit and the second kit for locking the first kit and the second kit between a folded state and an unfolded state.

2. The drone propeller arm folding device according to claim 1, characterized in that: The locking mechanism comprises: A first connecting portion is arranged on the second arc-shaped block, wherein the first connecting portion and the second assembly portion are locked by a pin, and the pin can be inserted or pulled out to control the locking and unlocking of the first set and the second set; A second connecting portion is arranged on the first arc-shaped block, and the second connecting portion and the first assembly portion are hingedly limited by another pin.

3. The drone propeller arm folding device according to claim 1, characterized in that: A bearing is disposed on the inner side of the first assembly portion to ensure smooth rotation between the first assembly set and the second assembly set.

4. The drone propeller arm folding device according to claim 1, characterized in that: The contact surfaces of the first arc block and the second arc block, the third arc block and the fourth arc block are all provided with rubber pads to improve the sealing performance of the joints.

5. The drone propeller arm folding device according to claim 1, characterized in that: The first kit and the second kit are both formed by CNC machining to ensure their structural accuracy and stability.

6. The drone propeller arm folding device according to claim 1, characterized in that: The first arc block and the second arc block, and the third arc block and the fourth arc block are fastened together by screws.

7. The drone propeller arm folding device according to claim 2, characterized in that: The first assembly portion and the second assembly portion are both provided with assembly holes, and the assembly holes are used to install the pin.

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