Double-motor coaxial different-direction double-propeller structure of electric paraglider

Abstract

The utility model discloses a double-motor coaxial different-direction double-paddle structure of an electric paraglider, which comprises a cylindrical mounting shaft with a middle hole inside, a first brushless motor, a first paddle assembly, a second brushless motor and a second paddle assembly are sequentially and rotatably sleeved on the mounting shaft, the first paddle assembly is in transmission connection with the first brushless motor, and the second paddle assembly is in transmission connection with the second brushless motor. The second paddle assembly is in transmission connection with the second brushless motor, and during flight, the first brushless motor and the second brushless motor drive the first paddle assembly and the second paddle assembly to rotate in the opposite directions correspondingly. The hollow mounting shaft is arranged in the middle hole of the mounting shaft for wiring, in addition, the two brushless motors and the two paddle assemblies are mounted on the mounting shaft, the two brushless motors drive the two paddle assemblies to rotate reversely, torque generated when the paddles rotate is offset mutually, deflection force cannot be generated in the running process, and therefore people can deflect along with the paddle assemblies, and the service life of the paddle assemblies is prolonged. When the rear paddle operates, the wind can be blown forwards to drive the front paddle to rotate, so that the efficiency is higher when the front motor operates; in addition, the hollowed-out design is beneficial to reducing weight and improving heat dissipation capability. And finally, an ultrasonic sensor is arranged on the sealing cover, and wires are arranged in the mounting shaft to detect obstacles so as to control the operation of the motor, so that dangers are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of gliding parachute, especially electric gliding parachute's double motor coaxial different direction double propeller structure. BACKGROUND

[0002] The gliding parachute wing is the main component of lift and load bearing, in the flight process, the double propeller can offset the torque produced when the propeller rotates, so that the running will not produce the deflection force, avoid the operator to follow the deflection, therefore most gliding parachutes adopt double propeller structure.

[0003] At present, the double propeller structure on the market all adopts the scheme of single motor driving, such as the patent with the application number CN202310783778.3, which discloses a pure electric driving multi-propeller power glider, including rack, propelling device and power device, the propelling device includes driving motor and propeller, the propeller is located at the rear side of the rack, the rack is provided with a protective frame, the driving motor includes outer rotor and inner stator, the outer rotor is provided with output shaft one, the inner stator is provided with reversing mechanism inside, the output end of the reversing mechanism is connected with output shaft two, the input end of the reversing mechanism is connected with output shaft one, output shaft one passes through the center of output shaft two along the axial direction, output shaft one and output shaft two can rotate relative to each other, the reversing mechanism receives the power output by output shaft one and transmits to output shaft two, so that output shaft two outputs the rotating power in the opposite direction of output shaft one, output shaft one and output shaft two are all connected with propeller, when the driving motor starts, output shaft one and output shaft two drive two propellers to rotate respectively, so that the rotating directions of the two propellers are opposite, and the yawing torques generated by the two propellers are offset.

[0004] In the above patent, the reversing is realized through the complex transmission structure, so as to ensure that the two propellers rotate in opposite directions, but this will greatly increase the complexity of the transmission structure, and the two propellers are always in the synchronous state. UTILITY MODEL CONTENTS

[0005] Based on the deficiencies in the prior art, the utility model provides a double motor coaxial different direction double propeller structure of electric gliding parachute.

[0006] The utility model adopts the technical scheme that the double motor coaxial different direction double propeller structure of electric gliding parachute includes the cylindrical installation shaft with the middle hole in the inside, the first brushless motor is fixed and is covered in proper order on the installation shaft, the first propeller assembly is rotatably covered, the second brushless motor is fixed and covered, and the second propeller assembly is rotatably covered, the first propeller assembly is transmission connected with the first brushless motor, the second propeller assembly is transmission connected with the second brushless motor, when flying, the first brushless motor and the second brushless motor drive the first propeller assembly and the second propeller assembly to rotate in opposite directions respectively.

[0007] As preferred, two groups of power supply lines are arranged in the middle hole, and the two groups of power supply lines pass through the side wall of the mounting shaft and are connected with the first brushless motor and the second brushless motor respectively.

[0008] As preferred, the first stator assembly and the second stator assembly are of the same structure, and each includes a circular ring-shaped stator winding fixed to the outer side wall of the mounting shaft.

[0009] As preferred, the first rotor assembly and the second rotor assembly are of the same structure, and each includes a rotor shell and two permanent magnet blocks of different polarities embedded in the rotor shell, and the rotor shell surrounds the stator winding inside.

[0010] As preferred, the rotor shell includes a first end shell, a middle shell and a second end shell, the middle shell is of a circular ring structure, the first end shell and the second end shell are detachably connected to the two end openings of the middle shell, and the first end shell and the second end shell are provided with through holes for the mounting shaft to pass through.

[0011] As preferred, the first end shell and the second end shell each include an outer ring body, an inner ring body and a plurality of connecting columns arranged between the outer ring body and the inner ring body to connect the two; the connecting columns are arrayed and form hollow through holes between adjacent connecting columns.

[0012] As preferred, a bearing is arranged between the inner ring body and the mounting shaft, and the inner ring body is rotatably connected with the mounting shaft through the bearing.

[0013] As preferred, a plurality of mounting columns are arranged on the connecting columns, and the mounting columns are locked and fixed by a locking member after passing through the paddle assembly.

[0014] As preferred, a plurality of threaded columns are arranged on the inner wall of the mounting shaft, and the outer end of each threaded column is fixed with a cover through a screw, the inner end of the mounting shaft is sleeved with a mounting seat, the middle part of the mounting seat is provided with a through hole, the hole wall of the through hole is provided with an annular table, the inner end of the mounting seat abuts on the annular table and is locked through a screw passing through the annular table, a radial screw is arranged on the side wall of the mounting seat to fix the mounting seat and the mounting shaft, a plurality of circular mounting ears are arranged on the outer side wall of the mounting seat in an array, and a fastener is arranged in each mounting ear to fix the mounting seat.

[0015] The mounting shaft includes a first shaft body and a second shaft body which are connected, the connection part of the first shaft body and the second shaft body is of a non-circular structure and is sleeved with a connecting sleeve inside, the first shaft body and the connecting sleeve are locked and fixed through a fastener, the cover is fixed to the end of the second shaft body, and the cover is provided with an embedded groove, an ultrasonic sensor is embedded in the embedded groove, the ultrasonic sensor has a power line passing through the first shaft body and the second shaft body, and the power line is connected with a controller for controlling the two brushless motors.

[0016] Compared with the prior art, the hollow mounting shaft is arranged in the application, the middle hole of the mounting shaft is used for wiring, in addition, two brushless motors and two paddle assemblies are mounted on the mounting shaft, the two brushless motors drive the two paddle assemblies to rotate reversely respectively, the torque generated when the paddle rotates is cancelled by each other, so that the deflection force is not generated during operation, the person does not follow the deflection, the rear paddle blows the wind forward during operation, drives the front paddle to rotate, so that the efficiency of the front motor during operation is higher, in addition, the hollow design can facilitate the weight reduction and the heat dissipation capacity improvement, finally, the ultrasonic sensor is arranged on the cover and the wiring in the mounting shaft is used for detecting the obstacle to control the operation of the motor, so that the danger is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be described in further detail below in combination with the drawings and preferred embodiments, but the person skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be regarded as the limitation to the scope of the utility model. In addition, unless specifically indicated, the drawings only schematically show the composition or structure of the described object conceptually and can contain exaggerated display, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 It is the perspective view (with paddle assembly) of the application;

[0019] Figure 2 It is the side view (with paddle assembly) of the application;

[0020] Figure 3 It is the explosion view (with paddle assembly) of the application;

[0021] Figure 4 It is the explosion view (without containing paddle assembly) of the application;

[0022] Figure 5 It is the explosion view of the ultrasonic sensor of the application;

[0023] Figure 6 It is the perspective view (without containing paddle assembly) of the application;

[0024] Figure 7 And Figure 8 It is the perspective view of brushless motor (cover does not contain ultrasonic sensor);

[0025] In the diagram: 10, mounting shaft; 100, central hole; 101, first shaft body; 102, second shaft body; 103, connecting sleeve; 20, first brushless motor; 30, second brushless motor; 301, first end housing; 3010, bearing; 3011, 3031, outer ring body; 3012, 3032, connecting post; 3013, 3033, inner ring body; 302, middle housing; 303, second end housing; 3034, mounting post; 40, first blade assembly; 50, second blade assembly; 60, mounting base; 601, mounting ear; 602, wire hole; 603, annular platform; 70, cover; 701, ultrasonic sensor. Detailed Implementation

[0026] The preferred embodiments of the present invention will now be described in detail 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] Example 1

[0028] The electric paraglider features a dual-motor, coaxial, non-directional dual-propeller structure, such as... Figures 1-8 As shown, the device includes a cylindrical mounting shaft 10 with an internal axial central hole 100. A first brushless motor 20 is sequentially fixedly mounted on the mounting shaft 10, a first blade assembly 40 is rotatably mounted on it, a second brushless motor 30 is fixedly mounted on it, and a second blade assembly 50 is rotatably mounted on it. The first blade assembly 40 is driveably connected to the first brushless motor 20, and the second blade assembly 50 is driveably connected to the second brushless motor 30. During flight, the first brushless motor 20 and the second brushless motor 30 drive the first blade assembly 40 and the second blade assembly 50 to rotate in opposite directions, respectively. This design uses a hollow mounting shaft 10 with a central hole 100 for wiring. Furthermore, two brushless motors and two blade assemblies are mounted on the mounting shaft 10. The two brushless motors drive the two blade assemblies to rotate in opposite directions, canceling out the torque generated during blade rotation. This prevents yaw forces that would cause the user to veer during operation. The rear blade propels air forward, driving the front blade to rotate, thus increasing the efficiency of the front motor.

[0029] Preferably, two sets of power lines are provided inside the central hole 100. These two sets of power lines pass through the side wall of the mounting shaft 10 and are respectively connected to the first brushless motor 20 and the second brushless motor 30. In this design, the mounting shaft 10 has a larger space, which is more conducive to wiring.

[0030] As preferred, the first stator assembly and the second stator assembly are identical in structure, and each comprises a circular annular stator winding fixed to the outer side wall of the mounting shaft 10. In this scheme, the annular stator winding is arranged outside the mounting shaft 10, and different coils are energized by the switching circuit to generate different magnetic fields at different positions, thereby driving the rotor assembly to rotate. Generally, six coils are provided, two in a group, and three groups are divided.

[0031] As preferred, the first rotor assembly and the second rotor assembly are identical in structure, and each comprises a rotor housing and two permanent magnet blocks of different polarities embedded in the rotor housing, and the rotor housing surrounds the stator winding inside. The permanent magnet blocks are driven to rotate by the electromagnetic field generated by the coils, and the rotation of the rotor assembly drives the paddle assembly to rotate.

[0032] As preferred, the rotor housing comprises a first end housing 301, a middle housing 302, and a second end housing 303. The middle housing 302 is in a circular annular structure, and the first end housing 301 and the second end housing 303 are detachably connected to the two end openings of the middle housing 302. The first end housing 301 and the second end housing 303 are provided with through holes for the mounting shaft 10 to pass through. The middle housing 302 and the mounting shaft 10 are spaced apart to accommodate the rotor assembly and the stator assembly.

[0033] As preferred, the first end housing 301 and the second end housing 303 each comprise an outer ring body 3011, 3031, an inner ring body 3013, 3033, and a plurality of connecting columns 3012, 3032 arranged between the outer ring body 3011, 3031 and the inner ring body 3013, 3033 to connect the two. The connecting columns 3012, 3032 are arrayed, and a hollow through hole is formed between adjacent connecting columns 3012, 3032. The hollow through hole can enhance heat dissipation at this position, ensure that the brushless motor operates at an appropriate temperature, and avoid damage to the brushless motor due to high temperature.

[0034] As preferred, a bearing is arranged between the inner ring body 3013, 3033 and the mounting shaft 10, and the inner ring body 3013, 3033 is rotatably connected to the mounting shaft 10 through the bearing. In this scheme, a rotating cooperation structure of the rotor assembly and the mounting shaft 10 is provided, and specifically, a bearing is arranged at each of the two ends of the inner ring body 3013, 3033.

[0035] As preferred, a plurality of mounting posts 3034 are arranged on the connecting posts 3012, 3032, and the mounting posts 3034 are locked and fixed by locking members after penetrating through the paddle assembly. The mounting posts 3034 are arranged on one side of the paddle assembly, and the mounting posts 3034 are used for mounting the paddle assembly, the paddle assembly comprises two paddle units, the locking member in the present scheme is a locking bolt, when locking, a pressing plate with a circular hole is arranged to press against the paddle units, the mounting posts 3034 penetrate through the paddle units and the circular hole and are locked by the locking bolt, after arranging the pressing plate, the locking bolt does not need to be arranged on each mounting post 3034, and at least two locking bolts can be used to fix the two paddle units.

[0036] As preferred, a plurality of threaded posts are arranged on the inner wall of the mounting shaft 10, and the outer end of the threaded posts is fixed with a cover 70 by a screw, the inner end of the mounting shaft 10 is sleeved with a mounting seat 60, the middle part of the mounting seat 60 is provided with a threading hole 602, the hole wall of the threading hole 602 is provided with an annular table 603, the inner end of the mounting shaft 10 abuts against the annular table 603 and is locked by a screw penetrating through the annular table 603, the side wall of the mounting seat 60 is provided with a radial screw for fixing the mounting seat 60 and the mounting shaft 10, the outer side wall of the mounting seat 60 is provided with a plurality of circularly arranged mounting ears 601, and the mounting ears 601 are internally provided with fasteners for fixing the mounting seat 60. The mounting seat 60 is used for fixing other components, such as the frame of the hang glider.

[0037] As preferred, the mounting shaft 10 comprises a first shaft body 101 and a second shaft body 102 which are connected, the connection part of the first shaft body 101 and the second shaft body 102 is a non-circular structure and is sleeved with a connecting sleeve 103 inside, the first shaft body 101 and the connecting sleeve 103 are locked and fixed by fasteners, the cover 70 is fixed on the end of the second shaft body 102, and the cover 70 is provided with an embedded groove, the embedded groove is embedded with an ultrasonic sensor 701, the ultrasonic sensor 701 has a power line penetrating through the first shaft body 101 and the second shaft body 102, and the power line is connected with a controller for controlling two brushless motors.

[0038] It should be noted that the motor rotor and stator winding are not shown in the drawings.

[0039] The double-motor coaxial and different-direction double-paddle structure of the electric hang glider is introduced above, the principle and implementation mode of the present application are described by applying specific examples in the present article, and the above description of the embodiments is only used to help understand the present application and the core idea. It should be pointed out that, for ordinary skilled persons in the technical field, some improvements and modifications can be made to the present application without departing from the principle of the present application, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A double-motor coaxial and different-direction double-blade structure of an electric paraglider, characterized in that, The cylindrical mounting shaft has a middle hole inside, and a first brushless motor, a first paddle assembly, a second brushless motor and a second paddle assembly are sequentially fixed on the mounting shaft. The inner wall of the mounting shaft is provided with a plurality of threaded columns, and the outer end of each threaded column is fixed with a cover through a screw.

2. The coaxial and different-direction dual-propeller structure of the dual-motor of the powered paraglider according to claim 1, characterized in that, The cover is provided with an embedded groove, and an ultrasonic sensor is embedded in the embedded groove.

3. The dual-motor coaxial and counter-rotating dual-propeller structure of the powered paraglider according to claim 1, characterized in that, The middle hole is provided with two groups of power supply lines which penetrate the side wall of the mounting shaft and are connected with the first brushless motor and the second brushless motor respectively.

4. The coaxial and different-direction dual-propeller structure of the dual-motor of the powered paraglider according to claim 3, characterized in that, The first stator assembly and the second stator assembly have the same structure and each includes a circular ring-shaped stator winding fixed to the outer side wall of the mounting shaft.

5. The coaxial and different-direction dual-propeller structure of the dual-motor of the powered paraglider according to claim 4, characterized in that, The first rotor assembly and the second rotor assembly have the same structure and each includes a rotor shell and two permanent magnet blocks of different polarities embedded on the rotor shell.

6. The coaxial and different-direction dual-propeller structure of the dual-motor of the powered paraglider according to claim 5, characterized in that, The rotor shell includes a first end shell, a middle shell and a second end shell.

7. The coaxial and different-direction dual-propeller structure of the dual-motor of the powered paraglider according to claim 6, characterized in that, The first end shell and the second end shell are detachably connected to the two end openings of the middle shell.

8. The dual-motor coaxial and counter-rotating dual-propeller structure of the powered paraglider according to claim 6, characterized in that, The first end shell and the second end shell each include an outer ring body, an inner ring body and a plurality of connecting columns arranged between the outer ring body and the inner ring body.

9. The dual-motor coaxial and counter-rotating dual-propeller structure of the powered paraglider according to claim 1, characterized in that, The connecting columns are arrayed and form hollow through holes between adjacent connecting columns.

10. The coaxial and different-direction dual-propeller structure of the dual-motor of the powered paraglider according to claim 9, characterized in that, A bearing is arranged between the inner ring body and the mounting shaft. The mounting column is locked and fixed by a locking member after penetrating the paddle assembly. The inner end of the mounting shaft is provided with a mounting seat. The mounting seat includes a first shaft body and a second shaft body which are connected to each other. The first shaft body and the second shaft body are connected to each other through a connecting sleeve. The first shaft body and the connecting sleeve are locked and fixed by a fastener. The cover is fixed to the end of the second shaft body.

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