Quick dismounting and mounting structure for motor blade of electric paraglider

Abstract

The utility model discloses an electric paraglider motor blade quick disassembly and assembly structure which comprises an installation base and N separated blades, each blade is provided with at least two installation through holes, the installation base is provided with a plurality of installation columns, the installation columns extend out of the installation through holes and are connected with pressing pieces for pressing the blades, and the N is a natural number. Wherein N is a positive integer greater than 1, and the blades are uniformly distributed in an annular array. The blades are arranged to be of a multi-blade separation structure, the installation base with the installation column is arranged, the installation column penetrates through the blades and then is pressed through the pressing piece, the blades can be completely disassembled only by disassembling the pressing piece in the assembling and disassembling process, and disassembling and assembling are convenient and fast.

Description

Technical Field

[0001] The utility model relates to a blade fixing structure, in particular to a quick disassembly and assembly structure of a motor blade of an electric paraglider. Background Art

[0002] Electric hang gliders, also known as powered paragliders or paragliders, are a type of paraglider and a type of personal recreational aircraft. They originated in Europe in the 1970s and were introduced to my country in the late 1980s. Comprising a paraglider and an engine, they are a popular extreme sport worldwide. By equipping an electric hang glider with a small engine, which drives the propeller's thrust and the paraglider's wing's lift, free takeoff and landing on flat ground becomes a breeze. Existing electric hang gliders also have motor-driven options.

[0003] Patent application number 202310783778.3 discloses a purely electric-driven multi-propeller powered glider, and its specification states that "a fastening bolt 17 for connection is provided between the propeller 15 and the output shaft 18. The fastening bolt 17 and the output shaft 18 are respectively located on the front and rear sides of the propeller 15. An intermediate through hole 24 is provided in the center of the propeller 15. The intermediate through hole 24 passes through the front and rear side surfaces of the propeller 15. The fastening bolt 17 is located on the rear side of the propeller 15, and the output shaft 18 is located on the front side of the propeller 15. The fastening bolt 17 is inserted into the intermediate through hole 24 and is threadedly connected to the output shaft 18 on the other side to install the propeller 15 on the output shaft 18. When the fastening bolt 17 is inserted into the intermediate through hole 24, it can rotate relative to the propeller 15." Principle of use: During installation, the propeller 15 is sleeved on the sleeve portion 19 through the intermediate through hole 24, and the front clamping plate 77 is pressed against the sleeve. The third engaging plane 20 and the fourth engaging plane 78 are engaged with each other on the tube 23, limiting the relative rotation between the propeller 15 and the output shaft 18. Then, the rod 85 of the fastening bolt 17 is inserted into the middle through hole 24 and threadedly connected with the end face of the sleeve 19. A socket wrench is put on the head 86 of the fastening bolt 17, and the fastening bolt 17 is rotated relative to the propeller 15 to tighten the fastening bolt 17. After the socket wrench is removed, the return spring 53 pushes the locking piece 25 moves backward to the locking position, pressing the locking piece 25 onto the head 86 of the fastening bolt 17. At this time, the clamping portion 70 of the rod body 85 of the fastening bolt 17 enters the channel 69, so that the first clamping plane 84 and the second clamping plane 79 are in surface-to-surface engagement, limiting the relative rotation of the fastening bolt 17 and the propeller 15, completing the installation. At this time, the propeller 15 is restricted from rotating by the fastening bolt 17 through the locking piece 25, and the output shaft 18 can drive the propeller 15 to rotate.

[0004] When disassembly is required, a socket wrench is put on the head 86 of the fastening bolt 17, and the socket wrench is inserted into the gap 16 between the head 86 and the middle through hole 24, and the locking member 25 is pushed forward to the unlocked position. The channel 69 of the locking member 25 is disengaged from the engaging portion 70, so that the fastening bolt 17 can rotate relative to the propeller 15. The socket wrench is rotated to unscrew the fastening bolt 17, and the propeller 15 sleeved on the sleeve portion 19 can be removed for quick disassembly and assembly.

[0005] It can be seen from the installation and disassembly process of the above-mentioned blade installation structure that the original installation structure is relatively complicated and the installation and disassembly are not fast enough. In addition, the blades are also an integrated structure. If a single blade is deformed or damaged, it cannot be partially replaced. Utility Model Content

[0006] Based on the fact that the blade installation structure in the prior art is relatively complicated, the installation and disassembly are not fast enough, and a single blade cannot be replaced separately, the utility model provides a quick disassembly and assembly structure for the motor blades of an electric paraglider.

[0007] The technical solution adopted by the present invention to solve the above technical problems is:

[0008] A quick disassembly and assembly structure for electric paraglider motor blades includes a mounting base and N separate blades, each blade having at least two mounting through-holes. The mounting base is provided with a plurality of mounting posts, which extend from the mounting through-holes and are connected to a clamping member for clamping the blades. N is a positive integer greater than 1 and the blades are evenly distributed in a circular array.

[0009] Preferably, the inner side wall of the mounting post is in contact with the side wall of the mounting through hole.

[0010] Preferably, the outer side wall of the mounting column is provided with an external thread, the clamping member is an annular pressure plate, the pressure plate is provided with a plurality of through holes for the mounting column to pass through, and the outer end side wall of the mounting column is provided with an external thread and is threadedly connected with a nut.

[0011] Preferably, at least one of the mounting posts passing through the same blade has an external thread, and the nut is arranged on the mounting post having the external thread.

[0012] Preferably, the pressing plate is one piece, and each mounting post passes through the pressing plate and is locked by at least two nuts.

[0013] Preferably, the pressing plate is composed of multiple pieces, each pressing block presses one blade respectively, or the pressing blocks are combined to press all the blades together, and the nuts are used to lock them during pressing.

[0014] Preferably, the outer end side wall of the mounting column is provided with an external thread, and the clamping member is a nut threadedly arranged on the outer side wall of the mounting column.

[0015] Preferably, a transverse pin is provided on the mounting post, and when the nut is tightened, the transverse pin abuts against the outer end of the nut.

[0016] Preferably, the outer end of the nut is provided with several groups of relative limiting grooves, the cross pin passes through both sides of the mounting column part and is located in the limiting groove, and the two horizontal ends are bent to form a flat-bottomed U-shaped structure or one side of the cross pin is bent to the other side and then bent again into a hook and hooked to the other side to form a ring structure.

[0017] Preferably, a rotor is further included, and the mounting seat is detachably arranged on the rotor.

[0018] Compared with the prior art, the advantages of the present invention are as follows: the present application sets the blades as a multi-piece separate structure, and provides a mounting base with a mounting column. After the mounting column passes through the blades, it is clamped by a clamping member. The clamping method is diverse. When installing and disassembling, only the clamping member needs to be removed to completely remove the blades. The disassembly and assembly is convenient and quick, and the blades can be replaced individually. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the depicted objects and may contain exaggerated representations. Furthermore, the drawings are not necessarily drawn to scale.

[0020] Figure 1 A side view of the present application;

[0021] Figure 2 A perspective view of this application;

[0022] Figure 3 This is an exploded view of the application;

[0023] Figure 4 for Figure 3 Enlarged view of the middle Q;

[0024] Figure 5 is an enlarged view of the nut;

[0025] In the figure: 10, blade; 10, mounting through hole; 20, rotor; 30, mounting seat; 301, mounting column; 40, pressing member; 401, pressure plate; 4011, through hole; 50, nut; 501, limiting groove; 502, cross pin; 60, screw; 70, gasket. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0027] It should be noted that like reference numerals denote like items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0028] This embodiment mainly describes the quick disassembly and assembly structure of the motor blades of an electric paraglider, as follows:

[0029] Main plan :

[0030] The quick disassembly and assembly structure of the electric paraglider motor blades, refer to Figure 1-Figure 5 The apparatus comprises a mounting base 30 and N separate blades 10. Each blade 10 is provided with at least two mounting holes 101. The mounting base 30 is provided with a plurality of mounting posts 301. These posts 301 extend from the mounting holes 101 and are connected to a clamping member 40 for clamping the blades 10. N is a positive integer greater than 1, and the blades 10 are evenly distributed in a circular array. The accompanying drawings illustrate two blades 10. The mounting posts 301 are arranged in two groups of three. A nut 50 is provided in the middle of the three posts 301 for clamping. The clamping plate 401 is a single, monolithic, annular structure.

[0031] Preferably, the inner side wall of the mounting post 301 is in contact with the side wall of the mounting hole 101. In this embodiment, the mounting post 301 is in contact with the mounting hole 101 to reduce the gap between the blades 10 and prevent the blades 10 from shaking. The clamping parts have the following two types: case :

[0032] Option 1 :

[0033] like Figure 3-4 As shown, the outer wall of the mounting post 301 is provided with external threads. The pressing member 40 is an annular pressure plate 401, which is provided with a plurality of through-holes 4011 for the mounting post 301 to pass through. The outer side wall of the mounting post 301 is provided with external threads and is threadedly connected to the nut 50. The wall of the through-hole 4011 is in contact with the side wall of the mounting post 301 to provide a retaining function.

[0034] Preferably, at least one of the mounting posts 301 passing through a single blade 10 has external threads, and the nut 50 is mounted on this externally threaded mounting post 301. The number of externally threaded mounting posts 301 is determined based on the structure of the pressure plate 401, with the minimum number required to stably press the blade 10 being the minimum.

[0035] Preferably, the pressure plate 401 is a single piece, and each mounting post 301 passes through the pressure plate 401 and is secured by at least two nuts 50. This solution is the most optimal, requiring at least two nuts 50 for tightening. When two nuts 50 are provided, they are symmetrically arranged about the rotation axis of the blade 10. The remaining mounting posts 301 only need to extend into the through-holes 4011 of the pressure plate 401.

[0036] Preferably, the pressure plate 401 is composed of multiple pieces, each of which presses a blade 10, or the pressure blocks are combined to press all blades 10 together, and the compression is locked by nuts 50. In this solution, each pressure plate 401 requires at least one nut 50 for locking. Compared with a single piece of pressure plate 401, its disassembly and assembly is slightly more complicated, but its partial disassembly and assembly is more convenient.

[0037] Option 2 The outer sidewall of the mounting post 301 is provided with an external thread, and the clamping member 40 is a nut 50 threadedly mounted on the outer sidewall of the mounting post 301. This solution directly locks the blade 10 with the nut 50. Compared with the pressure plate 401 structure, it requires multiple nuts 50, which is slightly slower to install and remove.

[0038] like Figure 5 As shown, in the above two solutions, a gasket 70 is provided at the compression position of the nut 50 to increase the contact area and prevent loosening.

[0039] Nut limiting part :

[0040] like Figure 2-5 As shown, a transverse pin 502 is also provided on the mounting post 301. When the nut 50 is tightened, the transverse pin 502 abuts against the outer end of the nut 50. The transverse pin 502 is used to limit the nut 50 axially to prevent the nut 50 from loosening during the movement of the blade 10 and causing the blade 10 to fall off.

[0041] like Figure 5 As shown, the outer end of the nut 50 is provided with several sets of opposing retaining grooves 501. A transverse pin 502 passes through the mounting post 301 and lies within the retaining grooves 501 on both sides. The two transverse ends are bent to form a flat-bottomed U-shaped structure, or the transverse pin 502 is bent from one side to the other and then bent again to form a hook that hooks onto the other side to form a ring-shaped structure. This structure prevents the nut 50 from loosening during rotation. The transverse pin 502 located in the retaining grooves 501 prevents the nut 50 from rotating circumferentially. Simultaneously, the transverse pin 502 abuts against the retaining grooves 501, also limiting the nut 50 in the axial direction. This dual retention ensures that the blade 10 is always compressed.

[0042] rotor part :

[0043] like Figure 4As shown, the rotor 20 is also included, and the mounting seat 30 is detachably arranged on the rotor 20. Specifically, the mounting seat 30 is an annular structure, which is close to the end of the rotor 20 and is locked to the end of the rotor 20 by a screw 60 extending into the end of the rotor 20.

[0044] It should be noted that the mounting seat 30 and the pressure plate 401 are both circular structures, and the holes in the middle of the two are used for the installation of the power assembly of the paraglider. Since the power assembly is installed in the middle, the structure of setting a locking bolt in the middle in the 202310783778.3 patent cannot be realized, so it is improved to the structure of the present application.

[0045] The above is a detailed introduction to the title of the quick disassembly and assembly structure of the motor blades of the electric paraglider provided by the utility model. This article uses specific examples to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the utility model, the utility model can also be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A quick disassembly and assembly structure for the motor blades of an electric paraglider, comprising a mounting base and N separate blades, characterized in that , at least two mounting through holes are provided on the blade, and a plurality of mounting posts are provided on the mounting seat. The mounting posts extend from the mounting through holes and are connected to a clamping member for clamping the blade, wherein N is a positive integer greater than 1 and each blade is evenly distributed in an annular array.

2. The quick disassembly and assembly structure of the motor blade of the electric paraglider according to claim 1, characterized in that: The inner side wall of the mounting column is fitted with the side wall of the mounting through hole.

3. The quick disassembly and assembly structure of the motor blade of the electric paraglider according to claim 1, characterized in that: The outer side wall of the mounting column is provided with an external thread, the pressing piece is an annular pressing plate, the pressing plate is provided with a plurality of through holes for the mounting column to pass through, the outer end side wall of the mounting column is provided with an external thread and is threadedly connected with a nut.

4. The quick disassembly and assembly structure of the motor blade of the electric paraglider according to claim 3, characterized in that: At least one of the mounting posts passing through the same blade has an external thread, and the nut is arranged on the mounting post with the external thread.

5. The quick disassembly and assembly structure of the motor blade of the electric paraglider according to claim 3, characterized in that: The pressing plate is a single piece, and each mounting post passes through the pressing plate and is locked by at least two nuts.

6. The quick disassembly and assembly structure of the motor blade of the electric paraglider according to claim 3, characterized in that: The pressure plate is composed of multiple pieces, each of which presses one blade respectively, or the pressure blocks are combined to press all the blades together, and are locked by nuts during compression.

7. The quick disassembly and assembly structure of the motor blade of the electric paraglider according to claim 1, characterized in that: The outer end side wall of the installation column is provided with an external thread, and the clamping piece is a nut threadedly arranged on the outer side wall of the installation column.

8. The quick disassembly and assembly structure of the motor blade of the electric paraglider according to claim 3 or 7, characterized in that: A transverse pin is also provided on the mounting column, and when the nut is tightened, the transverse pin abuts against the outer end of the nut.

9. The quick disassembly and assembly structure of the motor blade of the electric paraglider according to claim 8, characterized in that: Several groups of relative limiting grooves are provided at the outer end of the nut. The cross pin passes through both sides of the mounting column and is located in the limiting groove. The two horizontal ends are bent to form a flat-bottomed U-shaped structure or one side of the cross pin is bent to the other side and then bent again into a hook and hooked to the other side to form a ring structure.

10. The quick disassembly and assembly structure of the motor blade of the electric paraglider according to claim 1, characterized in that: The utility model also comprises a rotor, and the mounting seat is detachably arranged on the rotor.

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