An unmanned helicopter with foldable and retractable blades and a retraction method

Abstract

The present invention relates to the technical field of unmanned helicopters, and specifically to an unmanned helicopter with foldable and retractable blades and a retraction method. It includes a fuselage body and two blade brackets provided on the hub of the fuselage body. An assembly frame is rotatably arranged on the blade bracket through a lower connection assembly. A bottom stud is threadedly connected to the surface of the assembly frame. A first positioning seat is fixedly connected to the surface of the blade bracket. Two positioning screw grooves a are spaced apart on the surface of the first positioning seat. The bottom stud is adapted to the positioning screw groove a. Two assembly blocks are symmetrically and rotatably arranged on the assembly frame through an upper connection assembly. One end of the assembly block is fixedly connected with a blade. A top stud is threadedly connected to the surface of the assembly block. The present invention enables the blades to be folded and retracted on the blade brackets, which is beneficial to reducing the volume of the unmanned helicopter, reducing the space requirement for storage, and improving the convenience of transportation and storage of the unmanned helicopter.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned helicopters, and particularly to an unmanned helicopter with foldable and retractable blades and a retraction method. Background Art

[0002] An unmanned helicopter is an unpiloted aircraft controlled by radio remote control equipment and self - contained program control devices, or operated completely or intermittently autonomously by an on - vehicle computer. Compared with piloted aircraft, unmanned helicopters are often more suitable for tasks that are "too dull, dirty or dangerous". The application of unmanned helicopters in fields such as aerial photography, agriculture, plant protection, micro - self - shooting, express delivery, and disaster relief has expanded their uses. However, when existing unmanned helicopters are transported, since each blade cannot be folded and retracted on the blade bracket, the volume of the unmanned helicopter is relatively large, increasing the storage space requirement and bringing inconvenience to the transportation and storage of the unmanned helicopter. Therefore, we propose an unmanned helicopter with foldable and retractable blades and a retraction method. Summary of the Invention

[0003] The purpose of the present invention is to provide an unmanned helicopter with foldable and retractable blades and a retraction method to solve the technical problems raised in the above - mentioned background art.

[0004] To achieve the above purpose, the present invention provides an unmanned helicopter with foldable and retractable blades, which includes a fuselage body and two blade brackets arranged on the hub of the fuselage body. An assembly frame is rotatably arranged on the blade bracket through a lower connection component. A bottom stud is threadedly connected to the surface of the assembly frame. A first positioning seat is fixedly connected to the surface of the blade bracket. Two positioning screw grooves a are spaced apart on the surface of the first positioning seat. The bottom stud is adapted to the positioning screw groove a. Two assembly blocks are symmetrically and rotatably arranged on the assembly frame through an upper connection component. One end of the assembly block is fixedly connected with a blade. A top stud is threadedly connected to the surface of the assembly block. A second positioning seat is fixedly connected to the surface of the assembly frame. Two positioning screw grooves b are spaced apart on the surface of the second positioning seat. The top stud is adapted to the positioning screw groove b.

[0005] Preferably, the lower connection component includes a lower connection seat and an assembly bottom shaft rotatably connected to the lower connection seat. The lower connection seat is fixedly installed at the upper end of the blade bracket, and the assembly bottom shaft is fixedly installed at the bottom end of the assembly frame.

[0006] Preferably, the upper connection component includes an upper connection seat and an assembly top shaft rotatably connected to the upper connection seat. The upper connection seat is fixedly installed at the upper end of the assembly frame, and the assembly top shaft is fixedly installed at the bottom end of the assembly block.

[0007] Preferably, knob blocks are fixedly connected to the upper ends of the top stud and the bottom stud, and the cross-sectional shape of the knob block is a regular hexagon.

[0008] Preferably, a mounting seat is fixedly installed at one end of the fuselage body, and a camera is fixedly installed on the mounting seat.

[0009] Preferably, a support frame is fixedly installed at the bottom end of the fuselage body, and a bottom frame is fixedly connected to the bottom end of the support frame.

[0010] Preferably, a buffer seat is fixedly installed at the bottom end of the bottom frame, and the buffer seat is a component made of rubber.

[0011] Preferably, a reinforcing frame is fixedly connected between the support frame and the bottom frame, and the cross-sectional shape of the reinforcing frame is V-shaped.

[0012] To achieve the above and other related objectives, the present invention also provides a method for storing an unmanned helicopter. Based on the above unmanned helicopter with foldable and storable blades, it includes the following steps:

[0013] SP1: When it is necessary to fold and store the blades, loosen the top stud on the second positioning seat, and rotate the two assembly blocks towards each other and merge them;

[0014] SP2: Align the top stud with the corresponding positioning screw groove b on the second positioning seat, thread the top stud into the positioning screw groove b, and lock the assembly block in position on the assembly frame;

[0015] SP3: Loosen the bottom stud on the first positioning seat, and push the blade along the tail direction of the fuselage body. The assembly block rotates on the assembly frame, and each blade is rotated above the fuselage body;

[0016] SP4: Align the bottom stud with the corresponding positioning screw groove a on the first positioning seat, thread the bottom stud into the positioning screw groove a, and lock the assembly frame in position on the blade bracket, thereby completing the folding and storage of the blade on the blade bracket.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] By rotating the two assembly blocks on the assembly frame towards each other and merging them, then locking them in position, and then pushing the blade along the tail direction of the fuselage body, the assembly block rotates on the assembly frame, and each blade is rotated above the fuselage body. The assembly frame is locked in position on the blade bracket, enabling the blade to be folded and stored on the blade bracket, which is beneficial for reducing the volume of the unmanned helicopter, reducing the storage space requirement, and improving the convenience of transporting and storing the unmanned helicopter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The first three-dimensional structure schematic diagram when an unmanned helicopter with foldable and retractable blades is unfolded;

[0020] Figure 2 It is Figure 1 The enlarged structure schematic diagram of part A in

[0021] Figure 3 The second three-dimensional structure schematic diagram when an unmanned helicopter with foldable and retractable blades is unfolded;

[0022] Figure 4 It is Figure 3 The enlarged structure schematic diagram of part B in

[0023] Figure 5 The side view structure schematic diagram of an unmanned helicopter with foldable and retractable blades;

[0024] Figure 6 The three-dimensional structure schematic diagram after an unmanned helicopter with foldable and retractable blades is retracted.

[0025] In the figure: 1, fuselage body; 101, blade bracket; 102, mounting seat; 103, camera; 104, support frame; 105, chassis; 106, buffer seat; 107, reinforcing frame; 2, blade; 201, assembly block; 202, top stud; 3, assembly frame; 301, bottom stud; 4, lower connection component; 401, lower connection seat; 402, assembly bottom shaft; 5, first positioning seat; 501, positioning screw groove a; 6, upper connection component; 601, upper connection seat; 602, assembly top shaft; 7, second positioning seat; 701, positioning screw groove b. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0028] Please refer to Figures 1-6 As shown in the figure, the present invention provides an unmanned helicopter with foldable and retractable blades, which includes a fuselage body 1 and two blade brackets 101 provided on the hub of the fuselage body 1. An assembly frame 3 is rotatably arranged on the blade bracket 101 through a lower connection assembly 4. A bottom stud 301 is threadedly connected to the surface of the assembly frame 3. A first positioning seat 5 is fixedly connected to the surface of the blade bracket 101. Two positioning screw grooves a501 are spaced apart on the surface of the first positioning seat 5. The bottom stud 301 is adapted to the positioning screw groove a501. Two assembly blocks 201 are symmetrically and rotatably arranged on the assembly frame 3 through an upper connection assembly 6. One end of the assembly block 201 is fixedly connected to a blade 2. A top stud 202 is threadedly connected to the surface of the assembly block 201. A second positioning seat 7 is fixedly connected to the surface of the assembly frame 3. Two positioning screw grooves b701 are spaced apart on the surface of the second positioning seat 7. The top stud 202 is adapted to the positioning screw groove b701.

[0029] As a preferred implementation manner in this embodiment, the lower connection assembly 4 includes a lower connection seat 401 and an assembly bottom shaft 402 rotatably connected to the lower connection seat 401. The lower connection seat 401 is fixedly installed at the upper end of the blade bracket 101, and the assembly bottom shaft 402 is fixedly installed at the bottom end of the assembly frame 3.

[0030] As a preferred implementation manner in this embodiment, the upper connection assembly 6 includes an upper connection seat 601 and an assembly top shaft 602 rotatably connected to the upper connection seat 601. The upper connection seat 601 is fixedly installed at the upper end of the assembly frame 3, and the assembly top shaft 602 is fixedly installed at the bottom end of the assembly block 201.

[0031] As a preferred implementation manner in this embodiment, knob blocks are fixedly connected to the upper ends of the top stud 202 and the bottom stud 301. The cross-sectional shape of the knob block is a regular hexagon, achieving the purpose of facilitating the screwing of the top stud 202 and the bottom stud 301.

[0032] As a preferred implementation manner in this embodiment, a mounting seat 102 is fixedly installed at one end of the fuselage body 1, and a camera 103 is fixedly installed on the mounting seat 102, achieving the purpose of facilitating shooting during flight to obtain surrounding video or picture information.

[0033] As a preferred implementation manner in this embodiment, a support frame 104 is fixedly installed at the bottom end of the fuselage body 1, and the bottom end of the support frame 104 is fixedly connected to a bottom frame 105.

[0034] As a preferred implementation manner in this embodiment, a buffer seat 106 is fixedly installed at the bottom end of the bottom frame 105. The buffer seat 106 is a component made of rubber, enabling the buffer seat 106 to have good buffer and protection performance.

[0035] As a preferred implementation mode in this embodiment, a reinforcing frame 107 is fixedly connected between the support frame 104 and the chassis 105. The cross-sectional shape of the reinforcing frame 107 is V-shaped, achieving the purpose of improving the connection structural strength between the support frame 104 and the chassis 105.

[0036] The present invention also provides a method for storing an unmanned helicopter. Based on the above unmanned helicopter with foldable and storable blades, it includes the following steps:

[0037] SP1: When it is necessary to fold and store the blade 2, loosen the top stud 202 on the second positioning seat 7, and rotate the two fitting blocks 201 towards each other and merge them.

[0038] SP2: Align the top stud 202 with the corresponding positioning screw groove b701 on the second positioning seat 7, thread the top stud 202 into the positioning screw groove b701, and lock the fitting block 201 in position on the fitting frame 3.

[0039] SP3: Loosen the bottom stud 301 on the first positioning seat 5, and push the blade 2 along the tail direction of the fuselage body 1. The fitting block 201 rotates on the fitting frame 3, and each blade 2 is rotated above the fuselage body 1.

[0040] SP4: Align the bottom stud 301 with the corresponding positioning screw groove a501 on the first positioning seat 5, thread the bottom stud 301 into the positioning screw groove a501, and lock the fitting frame 3 in position on the blade bracket 101, thereby completing the folding and storage of the blade 2 on the blade bracket 101.

[0041] In summary, the present invention rotates the two fitting blocks 201 on the fitting frame 3 towards each other and merge them, then locks them in position. Then, push the blade 2 along the tail direction of the fuselage body 1. The fitting block 201 rotates on the fitting frame 3, and each blade 2 is rotated above the fuselage body 1. The fitting frame 3 is locked in position on the blade bracket 101, enabling the blade 2 to be folded and stored on the blade bracket 101, which is beneficial to reducing the volume of the unmanned helicopter, reducing the storage space requirement, and improving the convenience of transporting and storing the unmanned helicopter.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and do not limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An unmanned helicopter with foldable and retractable blades, comprising a fuselage body (1) and two blade brackets (101) arranged on the hub of the fuselage body (1), characterized in that, An assembly frame (3) is rotatably arranged on the blade bracket (101) through a lower connection assembly (4). The lower connection assembly (4) includes a lower connection base (401) and an assembly bottom shaft (402) rotatably connected to the lower connection base (401). The lower connection base (401) is fixedly installed at the upper end of the blade bracket (101), and the assembly bottom shaft (402) is fixedly installed at the bottom end of the assembly frame (3). A bottom stud (301) is threadedly connected to the surface of the assembly frame (3). A first positioning seat (5) is fixedly connected to the surface of the blade bracket (101). Two positioning screw grooves a (501) are spaced apart on the surface of the first positioning seat (5). The bottom stud (301) is adapted to the positioning screw groove a (501). Two assembly blocks (201) are symmetrically and rotatably arranged on the assembly frame (3) through an upper connection assembly (6). The upper connection assembly (6) includes an upper connection base (601) and an assembly top shaft (602) rotatably connected to the upper connection base (601). The upper connection base (601) is fixedly installed at the upper end of the assembly frame (3), and the assembly top shaft (602) is fixedly installed at the bottom end of the assembly block (201). One end of the assembly block (201) is fixedly connected to a blade (2). A top stud (202) is threadedly connected to the surface of the assembly block (201). A second positioning seat (7) is fixedly connected to the surface of the assembly frame (3). Two positioning screw grooves b (701) are spaced apart on the surface of the second positioning seat (7). The top stud (202) is adapted to the positioning screw groove b (701).

2. The collapsible and storable unmanned helicopter with paddle blades according to claim 1, wherein, Knob blocks are fixedly connected to the upper ends of the top stud (202) and the bottom stud (301). The cross-sectional shape of the knob block is a regular hexagon.

3. The collapsible and stowable unmanned helicopter according to claim 1, wherein, A mounting seat (102) is fixedly installed at one end of the fuselage body (1), and a camera (103) is fixedly installed on the mounting seat (102).

4. The collapsible and stowable unmanned helicopter according to claim 1, wherein, A support frame (104) is fixedly installed at the bottom end of the fuselage body (1), and a bottom frame (105) is fixedly connected to the bottom end of the support frame (104).

5. The collapsible and stowable unmanned helicopter blade according to claim 4, characterized in that, A buffer seat (106) is fixedly installed at the bottom end of the bottom frame (105). The buffer seat (106) is a component made of rubber.

6. The foldable and retractable unmanned helicopter according to claim 4, characterized in that, A reinforcing frame (107) is fixedly connected between the support frame (104) and the bottom frame (105). The cross-sectional shape of the reinforcing frame (107) is V-shaped.

7. A method for storing an unmanned helicopter, the unmanned helicopter with foldable and storable blades according to any one of claims 1-6, characterized in that, Including the following steps: SP1: When the blade (2) needs to be folded and stored, loosen the top stud (202) on the second positioning seat (7), and rotate the two assembly blocks (201) towards each other and merge them. SP2: Align the top stud (202) with the corresponding positioning screw groove b (701) on the second positioning seat (7), thread the top stud (202) into the positioning screw groove b (701), and lock and position the assembly block (201) on the assembly frame (3). SP3: Loosen the bottom stud (301) on the first positioning seat (5), push the blade (2) along the tail direction of the fuselage body (1), the assembly block (201) rotates on the assembly frame (3), and rotate each blade (2) above the fuselage body (1); SP4: Align the bottom stud (301) with the corresponding positioning screw groove a (501) on the first positioning seat (5), thread the bottom stud (301) into the positioning screw groove a (501), and the assembly frame (3) is positioned and locked on the blade bracket (101), thereby completing the folding and storage of the blade (2) on the blade bracket (101).

Images