Purely electric powered multi-propeller glider

Abstract

The invention discloses a purely electrically driven multi-propeller powered glider, comprising a frame, a propulsion device and a power supply device. The propulsion device comprises a driving motor and a propeller, wherein the propeller is located at the rear side of the frame, and a protective frame is provided on the frame. The driving motor comprises an outer rotor and an inner stator, wherein an output shaft 1 is provided on the outer rotor, and a reversing mechanism is provided inside the inner stator, wherein the output end of the reversing mechanism is connected with an output shaft 2, and the input end of the reversing mechanism is connected with the output shaft 1, wherein the output shaft 1 passes through the center of the output shaft 2 along the axial direction, and the output shaft 1 and the output shaft 2 can rotate relative to each other, and the reversing mechanism receives the power output by the output shaft 1 and transmits it to the output shaft 2, so that the output shaft 2 outputs a rotational power in the opposite direction to that of the output shaft 1, and the output shaft 1 and the output shaft 2 are both connected with propellers. When the driving motor is started, the output shaft 1 and the output shaft 2 respectively drive the two propellers to rotate, so that the rotation directions of the two propellers are opposite, and the yaw torques generated by the two propellers offset each other.

Description

Technical Field

[0001] The invention relates to a powered glider, in particular to a purely electrically driven multi-propeller powered glider. Background Art

[0002] Electric gliders, also known as powered paragliders and paragliders, are a type of paraglider and a type of personal leisure aircraft. They originated in Europe in the 1970s and were introduced to my country in the late 1980s. They are mainly composed of two parts: a paraglider and an engine. They are one of the extreme sports that are popular all over the world. By setting a small engine for the electric glider, the engine drives the thrust of the propeller and the lift of the paraglider wing, so that "free take-off and landing" on flat ground is no longer a problem. Existing electric gliders are also driven by motors.

[0003] For example, patent CN212267861U discloses an electric-driven paramotor power device and an electric-driven paramotor, which include: a fuselage, a power battery system, a propeller system and a control handle; the fuselage includes a center disk, a support arm and a guard frame; the center disk is connected to the support arm, and the support arm is connected to the guard frame; the support arm has an aerodynamic airfoil cross-section along the radial direction of the fuselage, which is used to generate a torque to offset the reverse torque of the propeller system; the power battery system and the propeller system are installed on the center disk, the power battery system is connected to the propeller system, and the propeller system is connected to the control handle.

[0004] For another example, patent CN201553300U discloses an electric powered parachute, which includes a parafoil that provides lift for the parafoil. The parafoil is suspended from a protective frame by parachute ropes. A driving device is arranged in the protective frame. A propeller is mounted on a propeller mounting plate of the driving device. Two motors are connected to a large gear through their respective small gears. The large gear is connected to the propeller mounting plate. The propeller is mounted on the propeller mounting plate.

[0005] There are problems with existing electric gliders. Existing electric gliders on the market generally adopt a single propeller structure, and the thrust is provided by the rotation of a single propeller to propel the electric glider forward. The rotation of a single propeller causes a large yaw torque on the electric glider, making the flight of the electric glider unstable and not conducive to the user's control of the electric glider. Summary of the invention

[0006] Based on the problem that when a single propeller of the electric glider is flying, the rotation of the single propeller causes a large yaw torque on the electric glider, making the flight of the electric glider unstable and not conducive to the user's control of the electric glider, the present invention provides a purely electrically driven multi-propeller powered glider.

[0007] The technical solution adopted by the present invention to solve the above technical problems is: a purely electrically driven multi-propeller powered glider, comprising a frame, a propulsion device and a power supply device, the propulsion device and the power supply device are both installed on the frame, the power supply device is electrically connected to the propulsion device for powering the propulsion device, the propulsion device comprises a driving motor fixed to the frame and a propeller connected to an output shaft of the driving motor, the propeller is located at the rear side of the frame for providing thrust to the frame, a protective frame is provided on the frame for preventing the parachute rope of the glider from contacting the propeller, and is characterized in that the driving motor is an outer rotor motor, the driving motor comprises an outer rotor and an inner stator, an output shaft 1 for outputting rotational power is provided on the outer rotor, a reversing mechanism is provided inside the inner stator, and an output end of the reversing mechanism is connected to an output Shaft 2, the input end of the reversing mechanism is connected to the output shaft 1, the output end of the output shaft 1 and the output end of the output shaft 2 are arranged on the same side of the driving motor, the output shaft 1 passes axially through the center of the output shaft 2, the center of the output shaft 2 is provided with a center hole opened axially for the output shaft 1 to pass through, the output shaft 1 and the output shaft 2 can rotate relative to each other, and the axis center line of the output shaft 1 coincides with the axis center line of the output shaft 2, the reversing mechanism receives the power output by the output shaft 1 and transmits it to the output shaft 2, so that the output shaft 2 outputs the rotational power in the opposite direction to the output shaft 1, the output shaft 1 and the output shaft 2 are both connected with propellers, and when the driving motor is started, the output shaft 1 and the output shaft 2 respectively drive the two propellers to rotate, so that the rotation directions of the two propellers are opposite.

[0008] A further preferred technical solution of the present invention is: the drive motor and the power supply device are both arranged on the rear side of the frame, the power supply device is located near the bottom of the frame, and the drive motor is located above the power supply device.

[0009] A further preferred technical solution of the present invention is that the rotation speed of output shaft one is equal to the rotation speed of output shaft two.

[0010] A further preferred technical solution of the present invention is: the inner stator is hollow and has a accommodating cavity, the reversing mechanism is arranged in the accommodating cavity, the output shaft 1 is arranged on the rotation axis of the outer rotor and passes through the center of the inner stator, and the output shaft 1 passes through the accommodating cavity inside the inner stator and is connected to the input end of the reversing mechanism.

[0011] A further preferred technical solution of the present invention is: the reversing mechanism is a gear set for reversing transmission, the gear set includes a driving bevel gear, a driven bevel gear and a transmission bevel gear, the driving bevel gear and the driven bevel gear are arranged opposite to each other, and the axis of the driving bevel gear coincides with the axis of the driven bevel gear, the driving bevel gear is connected to the output shaft one and is driven by the output shaft one to rotate coaxially, the driven bevel gear is rotatably connected to the inner stator, the transmission bevel gear is installed on the inner wall of the accommodating chamber, the transmission bevel gear is arranged between the driving bevel gear and the driven bevel gear, and the two sides of the transmission bevel gear are respectively meshed with the driving bevel gear and the driven bevel gear for transmission, when the output shaft one rotates, the driving bevel gear and the driven bevel gear rotate in opposite directions, the output shaft two is connected to the driven bevel gear, and the axis center line of the transmission bevel gear is perpendicular to the axis center line of the driving bevel gear.

[0012] A further preferred technical solution of the present invention is: the outer rotor includes a cover shell covering the outside of the inner stator and an end cover connected to one end of the cover shell, the end cover is rotatably installed on one end of the inner stator, and a fixing seat is fixed to the other end of the inner stator, a ventilation gap is provided between the outer rotor and the inner stator, the end cover and the fixing seat cover the two ends of the ventilation gap, a plurality of ventilation holes 1 are provided on the end cover, and a plurality of ventilation holes 2 are provided on the fixing seat, and ventilation holes 1 and ventilation holes 2 are respectively connected to the two ends of the ventilation gap to form a heat dissipation air path.

[0013] A further preferred technical solution of the present invention is: propeller one connected to output shaft one is located at the rear side of propeller two connected to output shaft two, a fastening bolt is provided between propeller one and output shaft one, the fastening bolt and output shaft one are respectively located on both sides of propeller one, a middle through hole is provided at the center of propeller one, the fastening bolt can be rotatably inserted into the middle through hole and threadedly connected with output shaft one on the other side, the propeller one is installed on output shaft one, a limit assembly is provided between propeller one and output shaft one to limit the relative rotation of propeller one and output shaft one, a locking piece is provided on propeller one, the locking piece can move relative to propeller one in the first axial direction to move and switch between a locked position and an unlocked position,

[0014] When the locking member moves to the locking position, the locking member limits the relative rotation between the fastening bolt and the propeller one, and when the locking member moves to the unlocking position, the relative rotation between the fastening bolt and the propeller one is restored.

[0015] A further preferred technical solution of the present invention is: the locking piece is sleeved on the outer side of the fastening bolt and can move relative to the fastening bolt along the length extension direction of the fastening bolt to move and switch between the locking position and the unlocking position, the locking piece is provided with a channel for the fastening bolt to pass through, the relative rotation between the locking piece and the propeller is restricted, the fastening bolt includes a rod body and a head connected to one end of the rod body, the locking piece is arranged in the middle through hole, the rod body of the fastening bolt passes through the channel and is connected to the output shaft, and the head size of the fastening bolt is larger than the opening size of the channel, a return spring is provided in the middle through hole to drive the locking piece to move to the locking position toward the head side of the fastening bolt, and a spacing is provided between the head of the fastening bolt and the inner wall of the middle through hole for inserting a tool for removing the fastening bolt, and when the tool is sleeved on the head of the fastening bolt, the tool is inserted into the spacing and pushes the locking piece to overcome the elastic force of the return spring and move to the unlocking position.

[0016] A further preferred technical solution of the present invention is: the protection frame includes a plurality of protection brackets arranged on the outer edge of the frame, the plurality of protection brackets are arranged around the propeller, a protection rope is passed between each of the protection brackets to form a protection net cover, the protection bracket includes a first bracket and a second bracket, one end of the first bracket is hinged to the frame, and one end of the second bracket is hinged to the other end of the first bracket, so that the first bracket and the second bracket can be flipped around their respective hinge points toward the rear side of the frame to a state where the protection bracket is fully unfolded, or the protection bracket can be folded toward the front center of the frame for accommodating a human body,

[0017] When the first bracket and the second bracket are flipped toward the rear side of the frame to a state where the protective bracket is fully extended, a first locking assembly is provided between the first bracket and the frame for locking the relative rotation of the first bracket and the frame, and a second locking assembly is provided between the second bracket and the first bracket for locking the relative rotation of the first bracket and the second bracket. In this state, the protective net cover is covered on the outside of the propeller to prevent the parachute rope of the electric glider from touching the propeller.

[0018] A further preferred technical solution of the present invention is as follows: bottom brackets located below the protective brackets are provided on the left and right sides of the bottom of the frame, the two ends of the protective rope are respectively connected to the bottom brackets on both sides, the rope body of the protective rope passes through each protective bracket in sequence from one side of the frame to the other side, and the protective bracket is provided with a rope threading hole for the protective rope to pass through, and the bottom bracket is hinged on the frame so that the bottom bracket can be flipped to the rear side of the frame and unfolded to the bottom of the propeller or folded to the front side of the frame.

[0019] When the bottom bracket and the protection bracket are simultaneously flipped toward the rear side of the frame to an unfolded state, the protection rope is tensioned. In this state, a third locking assembly is provided between the bottom bracket and the frame to lock the relative rotation of the bottom bracket and the frame, and the frame body of the bottom bracket is located on the side of the upper adjacent protection bracket close to the propeller.

[0020] When the bottom bracket and the protection bracket are folded toward the front side of the frame at the same time, the protection rope changes from a tensioned state to a relaxed state.

[0021] Compared with the prior art, the advantages of the present invention are that an output shaft 1 for outputting rotational power is provided on the outer rotor, a reversing mechanism is provided in the inner stator, the output end of the reversing mechanism is connected to the output shaft 2, the input end of the reversing mechanism is connected to the output shaft 1, the reversing mechanism receives the power output by the output shaft 1 and transmits it to the output shaft 2, so that the output shaft 2 outputs rotational power in the opposite direction to the output shaft 1, propellers are connected to the output shaft 1 and the output shaft 2, when the driving motor is started, the output shaft 1 and the output shaft 2 respectively drive the propellers to rotate, the rotation directions of the two propellers are opposite, and the yaw torques of the two propellers in opposite rotation directions on the electric glider can offset each other when rotating, thereby ensuring the flight stability of the electric glider and facilitating the user to control the electric glider. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0023] Figure 1 The powered glider is in use when the protective support is deployed. Figure 1 ;

[0024] Figure 2 The powered glider is in use when the protective support is deployed. Figure 2 ;

[0025] Figure 3 It is a schematic diagram of the structure in which the propulsion device is installed on the mounting frame;

[0026] Figure 4 The overall structure of the propulsion device is shown in Figure 1. Figure 1 ;

[0027] Figure 5 The overall structure of the propulsion device is shown in Figure 1. Figure 2 ;

[0028] Figure 6 This is a disassembled diagram of the various parts of the propulsion device;

[0029] Figure 7 A cutaway diagram of the propulsion device Figure 1 ;

[0030] Figure 8 is a cross-sectional schematic diagram of the propulsion device when the locking member moves to the locking position;

[0031] Fig. 9 is a cross-sectional schematic diagram of the propulsion device when the locking member moves to the unlocking position;

[0032] Fig.10 This is a disassembled diagram of output shaft 2 and propeller 2;

[0033] Fig.11 This is a partial exploded view of propeller 1;

[0034] Fig.12 It is a structural schematic diagram of the fastening bolt;

[0035] Fig.13 This is a disassembled diagram of the outer rotor and inner stator of the drive motor;

[0036] Fig.14 is a connection diagram between the reversing mechanism and the output shaft 1;

[0037] Fig.15 This is a disassembled diagram of the output shaft 1 and the active bevel gear;

[0038] Fig.16 This is a diagram of the protective bracket and the bottom bracket in a folded state;

[0039] Fig.17 It is a structural schematic diagram of the protective bracket;

[0040] Fig.18 This is a split diagram of bracket one and bracket two;

[0041] Fig.19 It is a cross-sectional schematic diagram of the protective bracket in a fully deployed state;

[0042] Fig. 20 It is a cross-sectional schematic diagram of the bottom bracket in a fully expanded state;

[0043] Fig.21 for Fig.19 A local enlarged view of point A;

[0044] Fig. 22 for Fig. 20 A partial enlarged view of point B.

[0045] In the figure: 1, frame; 2, protection rope; 3, bottom bracket; 4, mounting frame; 5, protection bracket; 6, flange; 7, propeller; 8, rope threading hole; 9, protection net cover; 10, boom; 11, main frame; 12, fixing plate; 13, drive motor; 14, propeller 2; 15, propeller 1; 16, spacing; 17, fastening bolt; 18, output shaft 1; 19, sleeve; 20, third clamping plane; 21, threaded hole 2; 22, output shaft 2; 23, sleeve; 24, middle through hole; 25, locking piece; 26, end cover; 27, ventilation hole 1; 28, ventilation gap; 29, ventilation hole 2; 30, fixed shaft; 31 , transmission bevel gear; 32, bearing four; 33, inner stator; 34, bearing slot one; 35, bearing one; 36, connecting shaft; 37, connecting hole one; 38, accommodating chamber; 39, connecting hole; 40, cover; 41, connecting seat; 42, fixing seat; 43, rear clamping plate two; 44, paddle body two; 45, front clamping plate two; 46, center hole three; 47, bearing slot four; 48, retaining spring four; 49, bearing five; 50, step three; 51, rotation axis of outer rotor; 52, plug-in part; 53, reset spring; 54, paddle body one; 55, rear clamping plate one; 56, sleeve part; 57, sliding part; 58, positioning hole; 59, positioning Column; 60, slide groove; 61, bearing groove 2; 62, connecting hole 2; 63, bearing 2; 64, retaining spring 2; 65, step 1; 66, driven bevel gear; 67, step 2; 68, first axis; 69, channel; 70, clamping part; 71, bearing groove 3; 72, center hole 1; 73, retaining spring 3; 74, bearing 3; 75, clamping tooth 1; 76, clamping tooth 2; 77, front clamping plate 1; 78, fourth clamping plane; 79, second clamping plane; 80; groove; 81, connecting bolt 3; 82, threaded section; 83, bare rod section; 84, first clamping plane; 85, rod body; 86, head; 87, outer rotor; 88, Winding groove; 89, active bevel gear; 90, snap-fit ​​surface two; 91, snap-fit ​​surface one; 92, center hole two; 93, second bracket; 94, fourth bracket; 95, third bracket; 96, first bracket; 97, spring pin two; 98, hollow hole; 99, hinge shaft two; 100, locking hole one; 101, spring pin one; 102, hinge shaft one; 103, locking hole two; 104, locking hole three; 105, hinge shaft four; 106, locking hole six; 107, spring pin four; 108, spring pin three; 109, locking hole five; 110, hinge shaft three; 111, locking hole four; 112, power supply device; 113, fixing hole. DETAILED DESCRIPTION

[0046] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are only illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0047] It should be noted that like reference numerals denote similar 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.

[0048] Figure 1-Figure 22 As shown, a purely electrically driven multi-propeller powered glider includes a frame 1, a propulsion device, a power supply device 112, a parachute, a protective frame and a boom 10. The propulsion device and the power supply device 112 are both installed on the frame 1, and the power supply device 112 is electrically connected to the propulsion device for powering the propulsion device.

[0049] Figure 2 As shown, there are two booms 10, one end of each boom 10 is fixed to the left and right sides of the frame 1 by a connecting bolt, and the boom 10 is extended to the front side of the frame 1, and the parachute body is connected to the booms 10 on both sides by parachute ropes. The parachute body and the parachute ropes are not shown in the drawings.

[0050] The power supply device 112 may be a lithium battery pack fixed on the frame 1 .

[0051] The propulsion device includes a driving motor 13 fixed on the frame 1 and a propeller 7 connected to the output shaft of the driving motor 13 . The propeller 7 is located at the rear side of the frame 1 .

[0052] When the powered glider is started, the propeller 7 at the rear side of the frame 1 rotates to provide thrust to the frame 1 , and the parachute provides lift for the rise. The user sits at the front side of the frame 1 to control the powered glider.

[0053] Figure 1 , Figure 2 As shown, the drive motor 13 and the power supply device 112 are both arranged on the rear side of the frame 1, and the power supply device 112 is located near the bottom of the frame 1, the drive motor 13 is located above the power supply device 112, the operator sits on the front side of the frame 1, and the power supply device 112 and the drive motor 13 are arranged on the rear side of the frame 1. During the flight, the power supply device 112 and the drive motor 13 on the rear side can balance the weight of the operator on the front side, so that the weight on the front and rear sides of the powered glider is more balanced.

[0054] A mounting frame 4 extending backward is fixed to the bottom of the rear side of the rack 1 , and the power supply device 112 is installed above the mounting frame 4 .

[0055] Figure 3 As shown, a mounting frame is fixed in the middle of the upper half of the frame 1, and a space for accommodating the above-mentioned drive motor 13 is provided in the mounting frame. The drive motor 13 is fixedly connected to the mounting frame by bolts, and the output shaft of the drive motor 13 extends out of the mounting frame to the rear side and is connected to the propeller 7 located outside the mounting frame.

[0056] The mounting frame is a cylindrical frame structure, a circular hole is provided at the center of the upper half of the frame 1, the mounting frame comprises a main frame 11 and a fixing plate 12 located at the front side of the main frame 11, the front side of the main frame 11 has an opening for placing a driving motor 13, the fixing plate 12 is fixed to the front side of the main frame 11 to cover the opening, the size of the main frame 11 is adapted to the circular hole, the size of the fixing plate 12 is larger than the size of the circular hole, the mounting frame passes backward through the circular hole and fixes the fixing plate 12 to the front surface of the frame 1 by bolts.

[0057] The mounting frame is a hollow frame structure, which is convenient for heat dissipation of the driving motor 13 .

[0058] Fig.13 As shown, the above-mentioned drive motor 13 is an outer rotor motor, and the drive motor 13 includes an outer rotor 87 and an inner stator 33. The outer rotor 87 is installed on the inner stator 33, and the outer rotor 87 is located on the outside of the inner stator 33. When the drive motor 13 is started, the outer rotor 87 can rotate relative to the inner stator 33 to output rotational power.

[0059] The structure of the outer rotor 87 and the inner stator 33 for converting electrical energy into rotational kinetic energy is the same as that of the existing outer rotor motor. The inner stator 33 is provided with a plurality of winding grooves 88 that penetrate the front and rear sides of the inner stator 33. The plurality of winding grooves 88 are arranged in a circular array on the inner stator 33 with the axis of the inner stator 33 as the center. The winding grooves 88 are used for winding the stator coil.

[0060] Figure 7 As shown, the outer rotor 87 includes a cover shell 40 covering the outer side of the inner stator 33 and an end cover 26 connected to one end of the cover shell 40, the end cover 26 is fixed to the cover shell 40, the end cover 26 is rotatably mounted on the front end of the inner stator 33, and a fixing seat 42 is fixed to the rear end of the inner stator 33 away from the end cover 26, and the drive motor 13 is fixedly connected to the mounting frame through the fixing seat 42 located on the rear side.

[0061] Preferably, a bearing 35 for reducing friction during rotation is provided between the end cover 26 and the inner stator 33. Specifically, a concave bearing groove 34 is provided on one end of the inner stator 33 for connecting to the end cover 26, a bearing 35 is installed in the bearing groove 34, the inner side surface of the outer ring of the bearing 35 abuts against the inner bottom of the bearing groove 34, a connecting shaft 36 is fixed on the inner side wall of the end cover 26, the connecting shaft 36 is inserted into the center of the bearing 35 and connected to the inner ring of the bearing 35, and the inner side wall of the end cover 26 abuts against the outer side surface of the inner ring of the bearing 35.

[0062] The axis center line of the connecting shaft 36 coincides with the rotation axis center line 51 of the outer rotor.

[0063] The outer rotor 87 is provided with an output shaft 18 for outputting rotational power. When the outer rotor 87 rotates, the outer rotor 87 drives the output shaft 18 to rotate. The output shaft 18 is arranged on the rotation axis 51 of the outer rotor, that is, the axis of the output shaft 18 coincides with the rotation axis 51 of the outer rotor.

[0064] Figure 8 , Fig. 9 , Fig.14 As shown, a reversing mechanism is provided inside the inner stator 33, and the output end of the reversing mechanism is connected to the output shaft 22, and the input end of the reversing mechanism is connected to the output shaft 18. The reversing mechanism receives the power output by the output shaft 18 and transmits it to the output shaft 22, so that the output shaft 22 outputs a rotational power in the opposite direction to the output shaft 18. For example, when the output shaft 18 outputs a forward rotational power, the output shaft 22 outputs a directional rotational power at the same time. The output shaft 18 outputs power and drives the output shaft 22 to output a rotational power in another direction at the same time, so that the drive motor 13 has output shafts with two rotational directions, thereby realizing multi-directional power output.

[0065] The output end of the output shaft 18 and the output end of the output shaft 22 are arranged on the same side of the drive motor 13, and the output ends of the output shaft 18 and the output ends of the output shaft 22 are both exposed from the rear side of the drive motor 13 for outputting rotational power, and the output shaft 18 passes axially through the center of the output shaft 22, and the center of the output shaft 22 is provided with a center hole 172 opened along its axial direction for the output shaft 18 to pass through, the output shaft 18 and the output shaft 22 can rotate relative to each other, and the axis center line of the output shaft 18 coincides with the axis center line of the output shaft 22.

[0066] The inner stator 33 is hollow inside and has a receiving chamber 38. The above-mentioned reversing mechanism is arranged in the receiving chamber 38. The output shaft 18 is arranged on the rotation axis 51 of the outer rotor, and the output shaft 18 passes through the center of the inner stator 33. The output shaft 18 passes through the receiving chamber 38 inside the inner stator 33 and is connected to the input end of the reversing mechanism.

[0067] A connecting hole 37 connecting the bearing groove 34 and the accommodating chamber 38 is provided on the inner groove bottom of the bearing groove 34. The output shaft 18 extends from the connecting hole 37 into the accommodating chamber 38 to be connected with the reversing mechanism.

[0068] The reversing mechanism is a gear set for reversing transmission, and the inner stator 33 serves as both a stator and a gear box. A gear box can also be separately arranged outside the gear set, and the entire gear reversing structure can be installed together in the accommodating cavity 38.

[0069] Fig.14As shown, specifically, the gear set includes a driving bevel gear 89, a driven bevel gear 66 and a transmission bevel gear 31, the driving bevel gear 89 and the driven bevel gear 66 are arranged opposite to each other, and the axis of the driving bevel gear 89 coincides with the axis of the driven bevel gear 66, the driving bevel gear 89 is connected to the output shaft 18 and driven by the output shaft 18 to rotate coaxially, the driven bevel gear 66 is rotatably connected to the inner stator 33, the transmission bevel gear 31 is mounted on the inner wall of the accommodating chamber 38, and the transmission bevel gear 31 can rotate relative to the accommodating chamber 38, and the transmission bevel gear 31 is arranged on the driving bevel gear The bevel gear 89 is connected to the driven bevel gear 66, and the two sides of the transmission bevel gear 31 are respectively meshed with the active bevel gear 89 and the driven bevel gear 66 for transmission. When the output shaft 18 rotates, the active bevel gear 89 first drives the transmission bevel gear 31 to rotate, and then the transmission bevel gear 31 drives the driven bevel gear 66 to rotate. The driven bevel gear 66 and the active bevel gear 89 rotate in opposite directions. The above-mentioned output shaft 22 is connected to the driven bevel gear 66, and the driven bevel gear 66 drives the output shaft 22 to rotate, so that the output shaft 22 and the output shaft 18 output rotational kinetic energy in the opposite direction.

[0070] Preferably, the above-mentioned transmission bevel gears 31 are provided with two, the two transmission bevel gears 31 are arranged opposite to each other, and the axis lines of the two transmission bevel gears 31 coincide, and the two sides of the two transmission bevel gears 31 are respectively meshed with the driving bevel gear 89 and the driven bevel gear 66. The transmission of the two transmission bevel gears 31 is more stable. In addition, the axis line of the transmission bevel gear 31 is perpendicular to the axis line of the driving bevel gear 89, and the transmission bevel gear 31 and the driving bevel gear 89 and the driven bevel gear 66 on both sides are vertically changed direction transmission.

[0071] Figure 7 As shown, specifically, fixed shafts 30 are fixed on the inner walls of both sides of the accommodating chamber 38, two transmission bevel gears 31 are coaxially connected to the two fixed shafts 30, and can rotate around the axis of the fixed shaft 30, and a bearing 32 is provided between the transmission bevel gear 31 and the fixed shaft 30 to reduce the friction when the transmission bevel gear 31 rotates relative to the fixed shaft 30. A connecting hole 39 for connecting the fixed shaft 30 is provided on the inner wall of the accommodating chamber 38, and the fixed shaft 30 can be tightly inserted into the connecting hole 39 on the inner wall of the accommodating chamber 38, and the fixed shaft 30 can also be threadedly connected with the connecting hole 39 on the accommodating chamber 38.

[0072] In order to facilitate the processing of the connection hole 39 , one end of the connection hole 39 is connected to the outer wall of the inner stator 33 , that is, the connection hole 39 is a hole opened from the outer wall of the inner stator 33 to the accommodating cavity 38 .

[0073] One end of the output shaft 18 is fixed on the end cover 26 of the outer rotor 87 located on the front side of the inner stator 33, and extends rearward along the rotation axis 51 of the outer rotor, penetrates the inner stator 33 and extends from the rear side of the inner stator 33 for outputting power, so that the output shaft 18 passes through the accommodating cavity 38. At this time, the output shaft 18 passes through the center of the active bevel gear 89, and the output shaft 18 is fixed to the active bevel gear 89.

[0074] Fig.15 As shown, preferably, the active bevel gear 89 is provided with a center hole 2 92 for the output shaft 18 to pass through, and at least one engaging surface 1 91 is provided on the inner wall of the center hole 2 92, and an engaging surface 2 90 engaged with the engaging surface 1 91 is provided on the outer peripheral wall of the output shaft 18. When the active bevel gear 89 is sleeved on the output shaft 18, the engaging surface 1 91 and the engaging surface 2 90 are engaged with each other to limit the relative rotation of the output shaft 18 and the active bevel gear 89. The center hole 2 92 is an inner hexagonal hole, and the portion on the output shaft 18 for sleeve engagement with the active bevel gear 89 is a hexagon that matches the shape of the inner hexagonal hole. A retaining spring 1 is clamped on the output shaft 18, and the retaining spring 1 abuts against the rear side of the active bevel gear 89, and the front side of the active bevel gear 89 abuts against the connecting shaft 36 or a step provided on the output shaft 18 to limit the axial movement of the active bevel gear 89, thereby fixing the active bevel gear 89 on the output shaft 18.

[0075] Figure 8 As shown, in addition, the output shaft 18 passes through the center of the driven bevel gear 66 and the output shaft 22 at the same time, the output shaft 22 is coaxially arranged on the driven bevel gear 66, the center hole 172 in the center of the output shaft 22 extends and passes through the driven bevel gear 66, the output shaft 18 passes through the center hole 172, the driven bevel gear 66 and the output shaft 22 can rotate relative to the output shaft 18, and the output shaft 22 also extends from the rear side of the inner stator 33 for outputting rotational power, so that the output end of the output shaft 18 for outputting power and the output end of the output shaft 22 for outputting power are arranged on the same side of the drive motor 13, the output shaft 18 and the output shaft 22 form an inner shaft and an outer shaft structure, and the output shaft 18 and the output shaft 22 are on the same axial line.

[0076] In addition, a concave bearing groove 61 is provided at the rear end of the inner stator 33 away from the end cover 26. A connecting hole 62 is provided on the inner bottom of the bearing groove 61 to communicate with the accommodating cavity 38. A bearing 63 is installed in the bearing groove 61. Most preferably, two bearings 63 are provided. A retaining spring 64 is clamped on the inner wall of the bearing groove 61. The retaining spring 64 abuts against the outer ring of the bearing 63 located on the outside, thereby limiting the two bearings 63 in the bearing groove 61 and limiting the axial movement of the bearing 63.

[0077] The output shaft 22 is located on the front side of the bearing 2 63. The output shaft 22 passes through the center of the bearing 2 63 backwards and is connected to the inner ring of the bearing 2 63. A step 1 65 is formed between the output shaft 22 and the driven bevel gear 66. The step 1 65 is pressed against the inner ring side wall of the bearing 2 63 located on the inner side for limiting position. The output shaft 18 is provided with a step 2 67 located on the front side of the driven bevel gear 66. The step 2 67 is in contact with the front side of the driven bevel gear 66 to limit the axial movement of the driven bevel gear 66 and the output shaft 22.

[0078] Fig. 9 As shown, a bearing three 74 is provided between the output shaft one 18 and the output shaft two 22. Specifically, a bearing groove three 71 is provided at the rear end of the output shaft two 22. The bearing groove three 71 is connected to the above-mentioned center hole one 72, and the bearing three 74 is installed in the bearing groove three 71. A retaining spring three 73 located at the rear side of the bearing three 74 is clamped on the output shaft one 18, and the retaining spring three 73 limits the axial movement of the bearing three 74.

[0079] The bearing groove 1 34 and the bearing groove 2 61 allow the inner stator 33 to form a cavity structure that is hollow inside and through at both ends, and the gear set can enter the accommodating cavity 38 from the bearing groove 1 34 or the bearing groove 2 61 .

[0080] Figure 8 , Fig. 9 As shown, the output shaft 1 18 and the output shaft 2 22 are both connected to propellers 7. When the drive motor 13 is started, the output shaft 18 and the output shaft 2 22 respectively drive the two propellers 7 to rotate, so that the rotation directions of the two propellers 7 are opposite.

[0081] The yaw torques of the electric glider caused by the two propellers 7 rotating in opposite directions can cancel each other when rotating, thereby ensuring the flight stability of the electric glider and facilitating the user to control the electric glider.

[0082] The propeller 15 connected to the output shaft 18 is located at the rear side of the propeller 2 14 connected to the output shaft 2 22 .

[0083] The propeller 14 includes a front clamping plate 145, a paddle body 14 and a rear clamping plate 143. The front clamping plate 145 and the rear clamping plate 143 are respectively arranged on the front and rear sides of the paddle body 14. The rear clamping plate 143 is provided with a plurality of bolt holes 1, the paddle body 144 is provided with bolt holes 2 corresponding to the bolt holes 1, and the front clamping plate 145 is provided with threaded holes 1 corresponding to the bolt holes 1. The connecting bolts 2 pass through the bolt holes 1, the bolt holes 2 and the threaded holes 1 in sequence to be threadedly connected, so that the rear clamping plate 143, the paddle body 144 and the front clamping plate 145 are connected as a whole.

[0084] The propeller 2 14 is provided with a center hole 3 46 along the axial direction. The propeller 2 14 is sleeved on the outer side of the output shaft 18 through the center hole 3 46. A bearing 5 49 is provided between the propeller 2 14 and the output shaft 18 for supporting the propeller 2 14 and the output shaft 1 18.

[0085] Figure 7 As shown, specifically, a bearing groove 47 is provided on the side of the front clamping plate 2 facing the paddle body 2 44, a bearing 5 49 is installed in the bearing groove 47, a retaining spring 48 is clamped on the inner wall of the bearing groove 47, and the retaining spring 48 limits the bearing 5 49 in the bearing groove 47 to limit the axial movement of the bearing 5 49, and the output shaft 18 passes through the center of the bearing 5 49 and is connected to the inner ring of the bearing 5 49, and the output shaft 18 is provided with a platform located on the front side of the bearing 5 49 Step three 50, step three 50 abuts against the inner ring of bearing five 49, a sleeve 23 is sleeved on the output shaft one 18, sleeve 23 is located on the rear side of propeller two 14, one end of the sleeve 23 is inserted into the center hole three 46 of propeller two 14, and abuts against the inner ring of bearing five 49, sleeve 23 cooperates with step three 50 to limit the axial movement of bearing five 49 relative to output shaft one 18, thereby limiting the axial movement of propeller two 14 on output shaft one 18 relative to output shaft one 18.

[0086] The sleeve 23 is inserted into the central hole 3 46 without contacting the propeller 2 14 , so as to prevent the sleeve 23 from contacting the propeller 2 14 and hindering the rotation of the propeller 2 14 .

[0087] Fig.10 As shown, a connecting seat 41 is fixed to the front end face of the front clamping plate 2 45, the bearing groove 47 is arranged in the connecting seat 41, a plurality of latch teeth 75 are arranged at the front end of the connecting seat 41, and a plurality of latch teeth 76 are arranged at the output end of the output shaft 2 22 extending out of the rear end of the driving motor 13 for engaging with the latch teeth 75, and a plurality of latch teeth 75 are staggeredly engaged with a plurality of latch teeth 76, so that the output shaft 2 22 can drive the propeller 2 14 to rotate.

[0088] Figure 6 As shown, in addition, 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 at the front and rear sides of the propeller 15, and a middle through hole 24 is provided at the center of the propeller 15, and the middle through hole 24 penetrates the front and rear sides of the propeller 15, the fastening bolt 17 is located at the rear side of the propeller 15, and the output shaft 18 is located at the front side of the propeller 15, and the fastening bolt 17 is inserted into the middle through hole 24 and is threadedly connected with the output shaft 18 on the other side, so that the propeller 15 is installed on the output shaft 18. When the fastening bolt 17 is inserted into the middle through hole 24, it can rotate relative to the propeller 15.

[0089] At this time, a limit assembly is provided between the propeller 15 and the output shaft 18, and the propeller 15 is limited in relative rotation with the output shaft 18 by the limit assembly.

[0090] There are many types of limiter components used to limit relative rotation, such as:

[0091] In one solution, a mounting seat is fixed to the end of the output shaft 18 for mounting the propeller 15, and the limiting assembly includes a limiting column arranged on the mounting seat and a limiting hole arranged on the propeller 15 corresponding to the limiting column. When the front side of the propeller 15 is against the mounting seat, the limiting column is inserted into the limiting hole to limit the relative rotation of the output shaft 18 and the propeller 15.

[0092] In another embodiment, the limit assembly includes a spline provided on the end of the output shaft 18 for mounting the propeller 15, and a spline groove provided on the front side of the propeller 15, and the relative rotation between the propeller 15 and the output shaft 18 is limited by the cooperation between the spline and the spline groove.

[0093] Figure 6 , Fig.11 As shown, for example, in this patent, one end of the output shaft 18 for connecting the propeller 15 is provided with a sleeve portion 19, and the sleeve portion 19 is exposed from the above-mentioned sleeve 23. The propeller 15 is sleeved on the outside of the sleeve portion 19 through the middle through hole 24, and the front side of the propeller 15 is against the sleeve 23. The rear end surface of the sleeve portion 19 is provided with a threaded hole 21, and the fastening bolt 17 is inserted into the middle through hole 24 and threadedly connected with the threaded hole 21 on the end surface of the sleeve portion 19. The propeller 15 is mounted on the output shaft 18, and the limiting assembly includes at least one third clamping plane 20 provided on the outer wall of the sleeve 19, and a fourth clamping plane 78 provided on the inner wall of the middle through hole 24 and corresponding to the third clamping plane 20. The third clamping plane 20 and the fourth clamping plane 78 are surface-to-surface clamped to limit the relative rotation of the propeller 15 and the output shaft 18 when the propeller 15 is sleeved on the sleeve 19 and connected to the output shaft 18. Preferably, there are six third clamping planes 20 in an annular array on the circumferential outer wall of the sleeve 19 with the axis of the output shaft 18 as the center, and six fourth clamping planes 78 matching the sleeve 19 are provided on a section of the inner wall located at the front side of the middle through hole 24.

[0094] The limiting assembly is not limited to the above-mentioned structures. Conventional limiting assemblies that can separate the propeller 15 from the output shaft 18 after the fastening bolts 17 are removed are applicable to this patent.

[0095] A locking member 25 is provided on the propeller 15, and the locking member 25 can move relative to the propeller 15 in the direction of the first axis 68 to move and switch between a locked position and an unlocked position. When the locking member 25 moves to the locked position, the locking member 25 limits the relative rotation between the fastening bolt 17 and the propeller 15; when the locking member 25 moves to the unlocked position, the relative rotation between the fastening bolt 17 and the propeller 15 is restored.

[0096] The locking structure of the locking member 25 has various structures, but is not limited to the several locking members 25 described above, for example:

[0097] In one solution, the locking member 25 includes a locking pin and a spring. The locking pin is arranged in the propeller 15 and can move radially along the propeller 15. A socket matching the locking pin is provided on the fastening bolt 17. The spring pushes the locking pin to move radially toward the center to a locking position. The locking pin is inserted into the socket on the fastening bolt 17 to limit the relative rotation between the fastening bolt 17 and the propeller 15. When the locking pin is moved outward to the unlocking position by an external force, the locking pin disengages from the socket. At this time, the fastening bolt 17 and the propeller 15 resume relative rotation. The direction of the first axis 68 is the radial direction of the propeller 15.

[0098] In another embodiment, the locking member 25 includes a spring and a U-shaped member arranged on the propeller 15. The fastening bolt 17 is provided with two symmetrically arranged clamping surfaces that cooperate with the U-shaped member. The direction of the first axis 68 is the radial direction of the propeller 15. When the spring drives the U-shaped member to move radially inward to the locking position, the U-shaped member is clamped on the outer side of the fastening bolt 17. The two side edges of the U-shaped member are clamped with two symmetrical clamping surfaces on the fastening bolt 17 to limit the relative rotation of the fastening bolt 17 and the propeller 15. When the U-shaped member is moved outward to the unlocking position by external force, the U-shaped member is disengaged from the fastening bolt 17, and the fastening bolt 17 and the propeller 15 resume relative rotation.

[0099] For another example, in the present patent, the locking member 25 is sleeved on the outside of the fastening bolt 17 and moves relative to the fastening bolt 17 along the length extension direction of the fastening bolt 17 to move and switch between the locked position and the unlocked position. The locking member 25 is provided with a channel 69 for the fastening bolt 17 to pass through, and the relative rotation between the locking member 25 and the propeller 15 is restricted.

[0100] Preferably, the locking member 25 is disposed in the middle through hole 24. Preferably, the direction of the first axis 68 is parallel to or coincides with the direction of the axis of the fastening bolt 17, and the direction of the axis of the fastening bolt 17 is parallel to or coincides with the direction of the axis of the output shaft 18. Most preferably, the direction of the first axis 68, the direction of the axis of the fastening bolt 17, and the direction of the axis of the output shaft 18 all coincide.

[0101] Figure 8 , Fig. 9 , Fig.11 As shown, a slide groove 60 is provided on the inner wall of the middle through hole 24, and a sliding portion 57 corresponding to the slide groove 60 is provided on the locking member 25. The sliding portion 57 is arranged in the slide groove 60 and can move along the slide groove 60 in the direction of the first axis 68, and the sliding portion 57 is slidably connected with the slide groove 60 to limit the relative rotation of the locking member 25 and the propeller 15. Preferably, there are three slide grooves 60 in an annular array on the inner wall of the middle through hole 24, and three sliding portions 57 corresponding to the three slide grooves 60 are convexly provided on the outer side wall of the locking member 25. The shape of the sliding portion 57 is adapted to the slide groove 60. When the three sliding portions 57 are slidably connected in the three corresponding slide grooves 60, the locking member 25 is restricted to move on the first axis 68 and cannot rotate relative to the propeller 15.

[0102] Fig.11 As shown, specifically, the propeller 15 includes a front clamping plate 177, a propeller body 154 and a rear clamping plate 155, the front clamping plate 177 and the rear clamping plate 155 are clamped on the front and rear sides of the propeller body 154, the rear clamping plate 155 is provided with a plurality of bolt holes 3 in an annular array, the propeller body 154 is provided with bolt holes 4 corresponding to each bolt hole 3, the front clamping plate 177 is provided with threaded holes 3 corresponding to each bolt hole 3, the bolt holes 3, the bolt holes 4 and the threaded holes 3 are butted, each connecting bolt 3 81 passes through the bolt holes 3 and the bolt holes 4 and is threadedly connected with the threaded holes 3, the front clamping plate 177, the propeller body 154 and the rear clamping plate 155 are fixedly connected as a whole, the front clamping plate 177, the propeller body 154 and the rear clamping plate 155 are all provided with a through hole located in the center, and the through holes are butted to form the above-mentioned middle through hole 24. The above-mentioned fourth clamping plane 78 is arranged on the inner wall of the through hole of the front clamping plate 177.

[0103] Three grooves 80 are provided on the side of the rear clamping plate 55 facing the paddle body 54. When the rear clamping plate 55 is clamped on the rear side of the paddle body 54, the grooves 80 and the paddle body 54 are enclosed to form the above-mentioned slide groove 60. The bottom of the groove 80 and the rear side surface of the paddle body 54 limit the maximum movement range of the sliding part 57 in the direction of the first axis 68, that is, limit the maximum movement range of the locking member 25 in the direction of the first axis 68.

[0104] The fastening bolt 17 includes a rod body 85 and a head 86 connected to one end of the rod body 85. At least one section of the rod body 85 has an external thread for threaded connection with the threaded hole 21 on the sleeve 19. Preferably, the rod body 85 includes a threaded section 82 away from the head 86 and a bare rod section 83 located between the threaded section 82 and the head 86.

[0105] The rod body 85 of the fastening bolt 17 passes through the hole 69 of the locking member 25 and is connected to the output shaft 18 .

[0106] Fig.12As shown, a clamping portion 70 is provided on the rod body 85. When the locking member 25 moves to the locking position, the clamping portion 70 enters the channel 69, and the clamping portion 70 is clamped with the locking member 25 to limit the relative rotation of the fastening bolt 17 and the propeller 15. When the locking member 25 moves to the unlocking position, the clamping portion 70 is disengaged from the channel 69 of the locking member 25, and there is a gap between the channel 69 and the rod body 85 of the fastening bolt 17 for the fastening bolt 17 and the locking member 25 to rotate relative to each other.

[0107] Fig.11 , Fig.12 As shown, specifically, the clamping portion 70 is arranged between the light rod section 83 and the head 86, and the clamping portion 70 is at least one first clamping plane 84 arranged on the outer wall of the rod body 85, and a second clamping plane 79 corresponding to the first clamping plane 84 is arranged on the inner wall of the channel 69. When the locking member 25 moves to the locking position, the clamping portion 70 enters the channel 69, so that the first clamping plane 84 and the second clamping plane 79 are surface-to-surface clamped to limit the relative rotation of the fastening bolt 17 and the propeller 15. Preferably, the outer wall of the rod body 85 is provided with six first clamping planes 84 in a circular array with the axial line of the fastening bolt 17 as the center, and the inner wall of the channel 69 is provided with six second clamping planes 79 corresponding to the six first clamping planes 84 respectively. When the locking member 25 moves backward to the locking position, the clamping portion 70 enters the channel 69, so that the first clamping plane 84 and the second clamping plane 79 are surface-to-surface clamped to limit the relative rotation of the fastening bolt 17 and the propeller 15. When the locking member 25 moves forward, the channel 69 disengages from the clamping portion 70 and moves to the light rod section 83. There is a gap between the channel 69 and the light rod section 83 for the relative rotation of the fastening bolt 17 and the locking member 25. The size of the rod body 85 where the clamping portion 70 is located is larger than the size of the light rod section 83.

[0108] The propeller 15 is installed on the output shaft by a fastening bolt 17 passing through the middle through hole 24 of the propeller 15 and connected to the output shaft. When in use, the locking member 25 moves to the locking position. At this time, the propeller 15 is restricted in relative rotation with the output shaft 18 through the limit assembly, and the relative rotation of the fastening bolt 17 and the propeller 15 is restricted by the locking member 25. The fastening bolt 17 cannot form self-rotation through the mutual cooperation between the output shaft 18 and the propeller 15, and between the propeller 15 and the fastening bolt 17. Thereby preventing the problem of the fastening bolt 17 loosening and detaching after self-rotation, the structure is more stable, and when disassembly is required, the locking piece 25 is moved to the unlocking position, at which time the fastening bolt 17 and the propeller 15 can rotate relative to each other, and the disassembly of the propeller 15 can be completed by unscrewing one of the fastening bolts 17 used for connection outward, and when the propeller 15 is disassembled from the output shaft 18, the sleeve 23 is removed from the output shaft 18, and at this time the propeller 2 14 can be slid backward along the output shaft 18 to be removed, so that the disassembly of the propeller 7 is quick and convenient.

[0109] In addition, the size of the head 86 of the fastening bolt 17 is larger than the opening size of the channel 69, and a reset spring 53 is provided in the middle through hole 24 to drive the locking member 25 to move to the side of the head 86 of the fastening bolt 17 to the locking position. At this time, the reset spring 53 presses the locking member 25 on the head 86 of the fastening bolt 17, and there is a distance 16 between the head 86 of the fastening bolt 17 and the inner wall of the middle through hole 24. The distance 16 is used for inserting a tool for removing the fastening bolt 17, and the tool can be a socket wrench.

[0110] The head 86 of the fastening bolt 17 and the sleeve 23 are limited at the front and rear sides of the propeller 15, so that the propeller 15 is installed at the end of the output shaft 18.

[0111] When the socket wrench is put on the head 86 of the fastening bolt 17, the tool is inserted into the gap 16 and pushes the locking member 25 to move forward to the unlocking position to overcome the elastic force of the reset spring 53. One-touch unlocking can be completed while the tool is put on, which is more convenient and quick to operate and realize quick release. The fastening bolt 17 is a hexagonal bolt.

[0112] Figure 8 As shown, the front side of the locking member 25 is provided with an extending sleeve portion 56, the front clamping plate 77 is provided with an insert portion 52 inserted into the through hole of the paddle body 54, the return spring 53 is sleeved on the outside of the fastening bolt 17, and one end of the return spring 53 is pressed against the insert portion 52, and the other end of the return spring 53 is sleeved on the outside of the sleeve portion 56 and pressed against the front side of the locking member 25, so as to prevent the return spring 53 from interfering with the fastening bolt 17 when the fastening bolt 17 passes through.

[0113] Figure 8 , Fig. 9As shown, in addition, positioning holes 58 corresponding to each groove 80 are provided on the outer end surface of the rear clamping plate 55, and the positioning holes 58 fall on the bottom of the groove 80. Positioning columns 59 corresponding to the positioning holes 58 are provided on the sliding portion 57. When the locking member 25 moves to the locking position, the positioning column 59 is inserted into the corresponding positioning hole 58, so that the locking member 25 can more stably limit the rotation of the fastening bolt 17 when it is in the locking position.

[0114] In addition, the length of the sleeve portion 19 is greater than the maximum movement range of the locking member 25 in the direction of the first axis 68, preventing the propeller 15 from moving to one side relative to the output shaft 18 and disengaging from the sleeve portion 19, so that the propeller 15 and the output shaft 18 rotate.

[0115] Principle of use: During installation, the propeller 15 is sleeved on the sleeve 19 through the middle through hole 24, and the front clamping plate 77 is pressed against the sleeve 23. At this time, the third clamping plane 20 and the fourth clamping plane 78 are face-to-face engaged to limit the relative rotation of 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. The 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. 7 is tightened, and after the socket wrench is removed, the reset spring 53 pushes the locking member 25 to move backward to the locking position, pressing the locking member 25 on 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 surface-to-surface clamped, limiting the relative rotation of the fastening bolt 17 and the propeller 15, and the installation is completed. At this time, the propeller 15 limits the rotation of the fastening bolt 17 through the locking member 25, and the output shaft 18 can drive the propeller 15 to rotate.

[0116] When disassembly is required, the socket wrench is put on the head 86 of the fastening bolt 17, 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 unlocking position. The channel 69 of the locking member 25 is disengaged from the clamping part 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 19 can be removed for quick disassembly and assembly.

[0117] The rotation speed of the output shaft 22 can be controlled by setting the number of teeth of the active bevel gear 89, the transmission bevel gear 31 and the driven bevel gear 66, thereby controlling the rotation speeds of the propellers 15 and 14. Preferably, the rotation speed of the output shaft 18 is equal to the rotation speed of the output shaft 22. At this time, the rotation speed of the propeller 15 is equal to the rotation speed of the propeller 2 14, and the 1:1 yaw torques of the two propellers can offset each other.

[0118] Figure 7 As shown, in addition, a ventilation gap 28 is provided between the outer rotor 87 and the inner stator 33, and the end cover 26 and the fixing seat 42 cover the two ends of the ventilation gap 28. The end cover 26 is provided with a plurality of ventilation holes 27, and the fixing seat 42 is provided with a plurality of ventilation holes 29. The ventilation holes 1 27 and the ventilation holes 2 29 are respectively connected to the two ends of the ventilation gap 28 to form a heat dissipation air path. When the propeller 7 rotates, there is a wind pressure difference before and after the drive motor 13, so that the external air flows along the heat dissipation air path to dissipate the heat of the drive motor 13 and the gear set.

[0119] Figure 1 , Figure 2 As shown, the protection frame is used to prevent the parachute rope of the glider from contacting the propeller 7. The protection frame includes a plurality of protection brackets 5 arranged on the outer edge of the frame 1. The plurality of protection brackets 5 are arranged around the propeller 7. Preferably, there are six protection brackets 5, three protection brackets 5 are arranged on the left and right sides of the frame 1, and the three protection brackets 5 on the left and right sides of the frame 1 are arranged one-to-one symmetrically.

[0120] A protection rope 2 is passed between each protection bracket 5 to form a protection net cover 9 .

[0121] Figure 7 , Figure 8 As shown, the protective bracket 5 includes a first bracket 96 and a second bracket 93, one end of the first bracket 96 is hinged to the frame 1, and one end of the second bracket 93 is hinged to the other end of the first bracket 96, so that the first bracket 96 and the second bracket 93 can be turned around their respective hinge points toward the rear side of the frame 1 to a state where the protective bracket 5 is fully unfolded, or the protective bracket 5 can be folded toward the front center of the frame 1 for accommodating a human body. The front center refers to the symmetric center line of the front side of the frame 1.

[0122] When the first bracket 96 and the second bracket 93 are flipped toward the rear side of the frame 1 to the state where the protective bracket 5 is fully extended, the protective bracket 5 is extended and shielded on the outside of the propeller 7 for protection. In this extended state, the protective net cover 9 covers the outside of the propeller 7 to prevent the parachute rope of the electric glider from touching the propeller 7. At this time, a first locking assembly is provided between the first bracket 96 and the frame 1 to lock the relative rotation of the first bracket 96 and the frame 1, and a second locking assembly is provided between the second bracket 93 and the first bracket 96 to lock the relative rotation of the first bracket 96 and the second bracket 93. The first locking assembly and the second locking assembly enable the protective bracket 5 to be more stably maintained in the fully extended state, preventing the rotation of the first bracket 96 and the second bracket 93 from affecting normal use.

[0123] Preferably, an articulated shaft 102 is provided between the first bracket 96 and the frame 1, and an articulated shaft 2 99 is provided between the second bracket 93 and the connected first bracket 96, the axis of the articulated shaft 102 is arranged along the tangent direction of the outer edge of the frame 1, and the axis of the articulated shaft 102 arranged at both ends of the first bracket 96 is parallel to the axis of the articulated shaft 2 99.

[0124] Specifically, the first locking assembly includes a locking hole 100 disposed on the first bracket 96 and eccentric to the hinge shaft 102, and a spring pin 101 disposed on the frame 1. When the first bracket 96 and the second bracket 93 are flipped toward the rear side of the frame 1 to a state where the protective bracket 5 is fully extended, the locking hole 100 rotates to a position opposite to the spring pin 101, and the spring pin 101 is inserted into the locking hole 100 to limit the relative rotation of the first bracket 96 and the frame 1. The spring pin 101 can be separated from the locking hole 100 by an external force, and can be automatically reset elastically.

[0125] The second locking assembly includes a second locking hole 103 disposed on the second bracket 93 and eccentric to the second hinge shaft 99, and a second spring pin 97 disposed on the first bracket 96. When the first bracket 96 and the second bracket 93 are flipped toward the rear side of the frame 1 to a state where the protective bracket 5 is fully extended, the second locking hole 103 rotates to a position opposite to the second spring pin 97, and the second spring pin 97 is inserted into the second locking hole 103 to limit the relative rotation of the second bracket 93 and the first bracket 96. The second spring pin 97 can be separated from the second locking hole 103 by an external force, and can be automatically reset elastically.

[0126] When the electric glider needs to be stored or transported, the second spring pin 97 and the first spring pin 101 are pulled out, so that the first bracket 96 and the frame 1, as well as the first bracket 96 and the second bracket 93 can rotate relative to each other, and the first bracket 96 and the second bracket 93 are folded toward the front center of the frame 1 for accommodating a human body, so as to realize the folding of the protective bracket 5, reduce the volume of the electric glider, and facilitate the storage, carrying and transportation of the electric glider.

[0127] Fig.19 , Fig.21 As shown, in addition, one end of the second bracket 93 connected to the first bracket 96 is provided with a locking hole three 104 eccentric to the hinge shaft two 99. When the first bracket 96 and the second bracket 93 are flipped toward the rear side of the frame 1 to the state where the protective bracket 5 is fully unfolded, the locking hole three 104 and the locking hole one 100 are docked, and the spring pin one 101 is inserted into the locking hole one 100 and the locking hole three 104 at the same time, so that the locking structure has better stability.

[0128] When the first bracket 96 and the second bracket 93 are flipped toward the rear side of the frame 1 to a state where the protective bracket 5 is fully unfolded, the hinge axis 1 102 , the hinge axis 2 99 and the locking hole 1 100 are connected to form a triangle.

[0129] Preferably, when the protection bracket 5 is in a fully extended state, the protection range of the protection net cover 9 on the outside of the propeller 7 is between 300° and 330°, and most preferably, the protection range of 315° on the outside of the propeller 7 is shielded by the protection net cover 9 for protection. The lower side of the protection net cover 9 has an opening, and the above-mentioned mounting frame 4 extends below the opening.

[0130] In addition, the protective bracket 5 is an arc-shaped plate structure, and a hollow hole 98 is provided on the plate surface of the protective bracket 5. The width of the second bracket 93 gradually decreases from one end connected to the first bracket 96 to the other end.

[0131] In addition, both side edges of the protection bracket 5 are provided with flanges 6 extending from one end to the other end, so that the protection bracket 5 has better bending resistance.

[0132] Fig. 20 , Fig. 22 As shown, in addition, bottom brackets 3 located below the protective brackets 5 are provided on the left and right sides of the bottom of the frame 1, and the two ends of the protective rope 2 are respectively connected to the bottom brackets 3 on both sides. The rope body of the protective rope 2 passes through each protective bracket 5 in turn from one side of the frame 1 to the other side. The protective bracket 5 is provided with a rope threading hole 8 for the protective rope 2 to pass through. The bottom bracket 3 is hinged to the frame 1, so that the bottom bracket 3 can be flipped to the rear side of the frame 1 and unfolded to the bottom of the propeller 7 or folded to the front side of the frame 1.

[0133] When the bottom bracket 3 and the protective bracket 5 are flipped to the rear side of the frame 1 to the unfolded state at the same time, the protective rope 2 is tensioned so that the protective rope 2 can play a protective role. In this state, a third locking assembly is provided between the bottom bracket 3 and the frame 1 to lock the relative rotation of the bottom bracket 3 and the frame 1, and the frame body of the bottom bracket 3 is located on the side of the adjacent protective bracket 5 above close to the propeller 7.

[0134] When the bottom bracket 3 and the protective bracket 5 are folded toward the front side of the frame 1 at the same time, the protective rope 2 changes from a tensioned state to a relaxed state, so that the protective rope 2 does not need to be removed when the protective bracket 5 is folded, which is more convenient for folding and storage.

[0135] The bottom bracket 3 is provided with a plurality of fixing holes 113 for connecting the ends of the protection rope 2 .

[0136] The bottom bracket 3 includes a third bracket 95 and a fourth bracket 94, one end of the third bracket 95 is hinged to the frame 1, one end of the fourth bracket 94 is hinged to the other end of the third bracket 95, a hinge shaft 3 110 is provided between the third bracket 95 and the frame 1, a hinge shaft 4 105 is provided between the fourth bracket 94 and the third bracket 95, the fourth bracket 94 can rotate relative to the third bracket 95 around the hinge shaft 4 105, the third bracket 95 can rotate relative to the frame 1 around the hinge shaft 3 110, the third bracket 95 and the fourth bracket 94 can flip around their respective hinge points toward the rear side of the frame 1 to a state where the bottom bracket 3 is fully unfolded, or fold toward the front side of the frame 1. The axis of the hinge shaft 3 110 is arranged along the tangent direction of the outer edge of the frame 1, and the axis of the hinge shaft 3 110 is parallel to the axis of the hinge shaft 4 105.

[0137] The third locking assembly includes a spring pin 3 108, a spring pin 4 107, a locking hole 4 111, a locking hole 5 109 and a locking hole 6 106. The spring pin 3 108 and the spring pin 4 107 are arranged on the frame 1. The locking hole 4 111 is arranged on the third bracket 95 and is eccentric to the hinge shaft 3 110. The locking hole 5 109 and the locking hole 6 106 are respectively arranged at both ends of the fourth bracket 94 and are eccentric to the hinge shaft 4 105. When the third bracket 95 and the fourth bracket 94 are connected, the locking hole 5 109 and the locking hole 6 106 are connected. When the frame 1 is flipped to the rear side to the fully extended state of the bottom bracket 3, the fourth locking hole 111 and the fifth locking hole 109 are docked and are both in a position opposite to the spring pin 3 108. The spring pin 3 108 is elastically inserted into the fourth locking hole 111 and the fifth locking hole 109 at the same time. At the same time, the sixth locking hole 106 is rotated to a position opposite to the spring pin 4 107. The spring pin 4 107 is elastically inserted into the sixth locking hole 106, so that the bottom bracket 3 is kept in the fully extended state.

[0138] The spring pin three 108 can be separated from the locking hole four 111 and the locking hole five 109 by external force, and can be elastically reset automatically. The spring pin four 107 can be separated from the locking hole six 106 by external force, and can be elastically reset automatically. When the bottom bracket 3 needs to be folded toward the front side of the frame 1, the spring pin three 108 is pulled out of the locking hole four 111 and the locking hole five 109, and the spring pin four 107 is pulled out of the locking hole six 106 at the same time, so that the third bracket 95 and the frame 1 bracket can rotate relative to each other, and the fourth bracket 94 and the third bracket 95 can rotate relative to each other, so that the bottom bracket 3 can be folded to the front side of the frame 1.

[0139] Preferably, when the third bracket 95 and the fourth bracket 94 are flipped toward the rear side of the frame 1 to the state where the bottom bracket 3 is fully unfolded, the locking hole 111, the hinge shaft 110 and the hinge shaft 105 are in a straight line. The third bracket 95 and the fourth bracket 94 are straight rod-shaped structures.

[0140] The spring pin one 101, the spring pin two 97, the spring pin three 108 and the spring pin four 107 are all existing spring pin structures, such as the indexing pin of the brand Jiutian Xuanle and the model MS1171-ST-003.

[0141] Fig.16 As shown, when the protective bracket 5 and the bottom bracket 3 are folded toward the front side of the frame 1, the boom 10 can rotate relative to the frame 1 to adjust the angle to avoid the protective bracket 5 and the bottom bracket 3, so as to facilitate the protective bracket 5 to fold toward the front center of the frame 1 for accommodating the human body.

[0142] The protective bracket 5 is made of aluminum and is light in weight.

[0143] The above is an introduction to the purely electrically driven multi-propeller powered glider provided by the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the present invention and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A purely electrically driven multi-propeller powered glider, comprising a frame, a propulsion device and a power supply device, wherein the propulsion device and the power supply device are both mounted on the frame, the power supply device is electrically connected to the propulsion device for supplying power to the propulsion device, the propulsion device comprises a drive motor fixed to the frame and a propeller connected to an output shaft of the drive motor, the propeller being located at the rear side of the frame for providing thrust to the frame, a protective frame for preventing the parachute rope of the glider from contacting the propeller is provided on the frame, and the characteristics are as follows: The drive motor is an outer rotor motor, which includes an outer rotor and an inner stator. The outer rotor is provided with an output shaft 1 for outputting rotational power. A reversing mechanism is provided inside the inner stator. The output end of the reversing mechanism is connected to the output shaft 2. The input end of the reversing mechanism is connected to the output shaft 1. The output end of the output shaft 1 and the output end of the output shaft 2 are arranged on the same side of the drive motor. The output shaft 1 passes axially through the center of the output shaft 2. The center of the output shaft 2 is provided with a center hole opened axially for the output shaft 1 to pass through. The output shaft 1 and the output shaft 2 can rotate relative to each other, and the axis center line of the output shaft 1 coincides with the axis center line of the output shaft 2. The reversing mechanism receives the power output by the output shaft 1 and transmits it to the output shaft 2, so that the output shaft 2 outputs the rotational power in the opposite direction to that of the output shaft 1. The output shaft 1 and the output shaft 2 are both connected with propellers. When the drive motor is started, the output shaft 1 and the output shaft 2 respectively drive the two propellers to rotate, so that the rotation directions of the two propellers are opposite. The propeller one connected to the output shaft one is located at the rear side of the propeller two connected to the output shaft two. The propeller two includes a front clamping plate two, a paddle body two and a rear clamping plate two. The front clamping plate two and the rear clamping plate two are respectively arranged on the front and rear sides of the paddle body two. The rear clamping plate two is provided with a plurality of bolt holes one, the paddle body two is provided with bolt holes two corresponding to the bolt holes one, the front clamping plate two is provided with a threaded hole one corresponding to the bolt hole one, the connecting bolt two passes through the bolt hole one, the bolt hole two and the threaded hole one in sequence and is threadedly connected, so that the rear clamping plate two, the paddle body two and the front clamping plate two are connected as a whole. The propeller two is provided with a center hole three along the axial direction, and the propeller two is sleeved on the outside of the output shaft one through the center hole three. A bearing five is provided between the propeller two and the output shaft one for supporting between the propeller two and the output shaft one A bearing groove four is opened on the side of the front clamping plate two facing the propeller body two, and a bearing five is installed in the bearing groove four. A retaining spring four is clamped on the inner wall of the bearing groove four. The retaining spring four limits the bearing five in the bearing groove four to limit the axial movement of the bearing five. The output shaft one passes through the center of the bearing five and is connected with the inner ring of the bearing five, and the output shaft one is provided with a step three located on the front side of the bearing five, and the step three is against the inner ring of the bearing five. A sleeve is sleeved on the output shaft one, and the sleeve is located on the rear side of the propeller two. One end of the sleeve is inserted into the center hole three of the propeller two and is against the inner ring of the bearing five. A connecting seat is fixed on the front end face of the front clamping plate two, and the bearing groove four is set in the connecting seat. A plurality of locking teeth one are provided at the front end of the connecting seat. The output end of the output shaft two extending out of the rear end of the driving motor is provided with a locking tooth one for engaging with the locking tooth one. The screw threaded hole is provided on the rear end face of the sleeve, and the ... The propeller one is installed on the output shaft one, and the limiting assembly includes at least one third clamping plane arranged on the outer wall of the sleeve portion, and a fourth clamping plane arranged on the inner wall of the middle through hole corresponding to the third clamping plane. The third clamping plane and the fourth clamping plane are surface-to-surface clamped to limit the relative rotation of the propeller one and the output shaft one when the propeller set is connected to the output shaft one on the sleeve portion. A locking piece is provided on the propeller one, and the locking piece can move relative to the propeller one in the first axial direction to move and switch between a locking position and an unlocking position. When the locking piece moves to the locking position, the locking piece limits the relative rotation of the fastening bolt and the propeller one. When the locking piece moves to the unlocking position, the relative rotation between the fastening bolt and the propeller one is restored. The locking piece is sleeved on the outside of the fastening bolt and can move relative to the fastening bolt along the length extension direction of the fastening bolt to move and switch between the locking position and the unlocking position. The locking piece is provided with a channel for the fastening bolt to pass through. The relative rotation between the locking piece and the propeller is restricted. The locking piece is arranged in the middle through hole. The fastening bolt includes a rod body and a head connected to one end of the rod body. The rod body of the fastening bolt passes through the channel and is connected to the output shaft one, and the head size of the fastening bolt is larger than the opening size of the channel. A clamping part is provided on the rod body. When the locking piece moves to the locking position, the clamping part enters the channel The clamping part is clamped with the locking piece to limit the relative rotation of the fastening bolt and the propeller. When the locking piece moves to the unlocking position, the clamping part disengages from the hole of the locking piece. There is a gap between the hole and the rod body of the fastening bolt for the relative rotation of the fastening bolt and the locking piece. A reset spring is provided in the middle through hole to drive the locking piece to move toward the head side of the fastening bolt to the locking position. There is a spacing between the head of the fastening bolt and the inner wall of the middle through hole for the insertion of a tool for removing the fastening bolt. When the tool is sleeved on the head of the fastening bolt, the tool is inserted into the spacing and pushes the locking piece to overcome the elastic force of the reset spring and move to the unlocking position.

2. The purely electrically driven multi-propeller powered glider according to claim 1, characterized in that: The driving motor and the power supply device are both arranged on the rear side of the frame, the power supply device is located near the bottom of the frame, and the driving motor is located above the power supply device.

3. The purely electrically driven multi-propeller powered glider according to claim 1, characterized in that: The rotation speed of output shaft one is equal to the rotation speed of output shaft two.

4. The purely electrically driven multi-propeller powered glider according to claim 1, characterized in that: The inner stator is hollow and has a receiving cavity, the reversing mechanism is arranged in the receiving cavity, the output shaft 1 is arranged on the rotation axis of the outer rotor and passes through the center of the inner stator, and the output shaft 1 passes through the receiving cavity inside the inner stator and is connected to the input end of the reversing mechanism.

5. The purely electrically driven multi-propeller powered glider according to claim 4, characterized in that: The reversing mechanism is a gear set for reversing transmission, and the gear set includes a driving bevel gear, a driven bevel gear and a transmission bevel gear. The driving bevel gear and the driven bevel gear are arranged opposite to each other, and the axis of the driving bevel gear coincides with the axis of the driven bevel gear. The driving bevel gear is connected to the output shaft one and is driven by the output shaft one to rotate coaxially. The driven bevel gear is rotatably connected to the inner stator. The transmission bevel gear is installed on the inner wall of the accommodating cavity. The transmission bevel gear is arranged between the driving bevel gear and the driven bevel gear, and the two sides of the transmission bevel gear are respectively meshed with the driving bevel gear and the driven bevel gear for transmission. When the output shaft one rotates, the driving bevel gear and the driven bevel gear rotate in opposite directions. The output shaft two is connected to the driven bevel gear, and the axis center line of the transmission bevel gear is perpendicular to the axis center line of the driving bevel gear.

6. The purely electrically driven multi-propeller powered glider according to claim 1, characterized in that: The outer rotor includes a cover shell covering the outer side of the inner stator and an end cover connected to one end of the cover shell, the end cover is rotatably mounted on one end of the inner stator, a fixing seat is fixed to the other end of the inner stator, a ventilation gap is arranged between the outer rotor and the inner stator, the end cover and the fixing seat cover the two ends of the ventilation gap, a plurality of ventilation holes 1 are arranged on the end cover, a plurality of ventilation holes 2 are arranged on the fixing seat, and ventilation holes 1 and ventilation holes 2 are respectively connected to the two ends of the ventilation gap to form a heat dissipation air path.

7. The purely electrically driven multi-propeller powered glider according to claim 1, characterized in that: The protection frame includes a plurality of protection brackets arranged on the outer edge of the frame, the plurality of protection brackets are arranged around the propeller, and a protection rope is passed through each of the protection brackets to form a protection net cover, the protection bracket includes a first bracket and a second bracket, one end of the first bracket is hinged to the frame, and one end of the second bracket is hinged to the other end of the first bracket, so that the first bracket and the second bracket can be flipped around their respective hinge points toward the rear side of the frame to a state where the protection bracket is fully unfolded, or the protection bracket can be folded toward the front center of the frame for accommodating a human body, When the first bracket and the second bracket are flipped toward the rear side of the frame to a state where the protective bracket is fully extended, a first locking assembly is provided between the first bracket and the frame for locking the relative rotation of the first bracket and the frame, and a second locking assembly is provided between the second bracket and the first bracket for locking the relative rotation of the first bracket and the second bracket. In this state, the protective net cover is covered on the outside of the propeller to prevent the parachute rope of the electric glider from touching the propeller.

8. The purely electrically driven multi-propeller powered glider according to claim 7, characterized in that: The left and right sides of the bottom of the frame are provided with bottom brackets located below the protection brackets, and the two ends of the protection rope are respectively connected to the bottom brackets on both sides. The rope body of the protection rope passes through each protection bracket in sequence from one side of the frame to the other side. The protection bracket is provided with a rope threading hole for the protection rope to pass through. The bottom bracket is hinged to the frame so that the bottom bracket can be flipped to the rear side of the frame and unfolded to the bottom of the propeller or folded to the front side of the frame. When the bottom bracket and the protection bracket are simultaneously flipped toward the rear side of the frame to an unfolded state, the protection rope is tensioned. In this state, a third locking assembly is provided between the bottom bracket and the frame to lock the relative rotation of the bottom bracket and the frame, and the frame body of the bottom bracket is located on the side of the upper adjacent protection bracket close to the propeller. When the bottom bracket and the protection bracket are folded toward the front side of the frame at the same time, the protection rope changes from a tensioned state to a relaxed state.

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