CN211606317U

CN211606317U - Multi-rotor brushless motor

Info

Publication number: CN211606317U
Application number: CN202020604273.8U
Authority: CN
Inventors: 王耀
Original assignee: Liante Fujian Intelligent Equipment Co ltd
Current assignee: Liante Fujian Intelligent Equipment Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-09-29
Anticipated expiration: 2030-04-21

Abstract

The utility model discloses a multi-rotor brushless motor, including mounting substrate, mounting substrate is provided with two altogether, and two mounting substrate's top is fixed with first bottom plate, the top of first bottom plate is close to both sides edge and all is fixed with first baffle, two the top of first baffle all is fixed with the second baffle, two be fixed with the second bottom plate between the top of second baffle. The utility model discloses in, because two (or a plurality of) brushless motor, constitute by first stator and first rotor and second stator and second rotor part respectively, it possesses more excellent radiating efficiency, consequently, brushless motor on the unmanned aerial vehicle can operate at high rotational speed interval for a long time, because unmanned aerial vehicle has the very big power redundancy of reservation in the design, so it is to break down when certain a set of rotor of this many rotor motors or stator appears, another group's rotor and stator still can the short time operation, can descend safely or return to the journey under emergency, reduce crash accident probability.

Description

Multi-rotor brushless motor

Technical Field

The utility model belongs to the technical field of brushless motor, specifically be multi-rotor brushless motor.

Background

The brushless direct current motor is composed of a motor main body and a driver, and is a typical electromechanical integration product. Because the brushless DC motor is operated in a self-control mode, a starting winding is not additionally arranged on a rotor like a synchronous motor which is started under the condition of heavy load under the condition of frequency conversion and speed regulation, and oscillation and step-out can not be generated when the load suddenly changes. The permanent magnet of the brushless DC motor with medium and small capacity is mostly made of rare earth neodymium iron boron (Nd-Fe-B) material with high magnetic energy level. Consequently, tombarthite permanent magnetism brushless motor's volume ratio is with capacity three-phase asynchronous motor has reduced a frame number, on unmanned aerial vehicle, it is current to adopt brushless motor to drive the screw and rotate the use, but among the prior art, brushless motor on the current unmanned aerial vehicle is in using, long-term because of current brushless motor when big load carrier type uses, brushless motor operating temperature is too high, large-scale civilian unmanned aerial vehicle's development in the serious restriction of efficiency reduction scheduling problem, current brushless motor is when using simultaneously, in case brushless motor breaks down, thereby can not last provide power to unmanned aerial vehicle, can make unmanned aerial vehicle the potential safety hazard appear, in using, can lead to unmanned aerial vehicle to appear damaging.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: through the technological improvement, the brushless motor to unmanned aerial vehicle that can be better provides power take off, can be to unmanned aerial vehicle's the stable lasting power that provides simultaneously for unmanned aerial vehicle's operation safety increases substantially.

The utility model adopts the technical scheme as follows: the multi-rotor brushless motor comprises two mounting base plates, wherein the two mounting base plates are arranged, a first bottom plate is fixed at the tops of the two mounting base plates, first baffle plates are fixed at the tops of the first bottom plates, which are close to the edges of two sides, a second baffle plate is fixed at the tops of the two first baffle plates, a second bottom plate is fixed between the tops of the two second baffle plates, screws penetrate through the top of the second bottom plate, which is close to four corners, and the bottom ends of the screws penetrate through the second baffle plates, the first bottom plates and the mounting base plates, a first stator is fixed at the top of the first bottom plate through screws, the top of the first stator is rotatably connected with a first rotor, a first power output shaft is arranged between the first stator and the inside of the first rotor, and the top end of the first power output shaft extends to the outside of the first rotor, the top of second bottom plate is fixed with the second stator through the screw, the top of second stator is rotated and is connected with the second rotor, be provided with second power output shaft between the inside of second stator and second rotor, and the top of second power output shaft extends to the outside of second rotor, the interior table wall of first rotor and second rotor is fixed with a plurality of coil groups along the equidistance of circle circumferencial direction, and is a plurality of the coil group divides into two sets ofly altogether, and is fixed with the fixed disk between the one end of a plurality of coil groups of every group.

The inner parts of the first power output shaft and the second power output shaft are both hollow structures, and the inner surface walls of the first power output shaft and the second power output shaft are respectively clamped with a first transmission shaft and a second transmission shaft.

The outer surfaces of the first transmission shaft and the second transmission shaft are close to the bottom edge and are provided with four clamping grooves at equal intervals along the circumferential direction, the top end of the first transmission shaft penetrates through the second bottom plate in a sliding mode, the top end of the first transmission shaft extends to the inside of the second stator, and the top end of the first transmission shaft is fixedly connected with the bottom of the second power output shaft.

The four hollow pipes are welded on the outer surfaces of the first power output shaft and the second power output shaft close to the top edge at equal intervals along the circumferential direction.

The inner surface wall of the hollow tube is welded with a return spring, one end of the return spring is welded with a circular plate, and the outer side of the circular plate is embedded with the inner surface wall of the hollow tube in a sliding manner.

The outer surface of one side of the circular plate is welded with a clamping rod, one end of the clamping rod extends into the first power output shaft or the second power output shaft, and the outer surface of the clamping rod is connected with the inner surface wall of the clamping groove in a clamping mode.

And a pull rod is welded on the outer surface of the other side of the circular plate, and one end of the pull rod extends to the outside of the hollow tube.

The outer surface of the second transmission shaft is sleeved with a fixing plate, a screw propeller is sleeved on the outer surface of the second transmission shaft, the top of the screw propeller is close to the center, four screws penetrate through the screw propeller along the circumference direction at equal intervals, and the bottom ends of the screws penetrate through the outer portion of the fixing plate.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses in, can make up into a brushless motor through first stator and second rotor, can make up into another brushless motor with second stator and second rotor, in the use, connect two brushless motor through first transmission shaft and second transmission shaft and install, establish ties into coaxial output through vertical combination with two brushless motor for drive the screw of bigger specification, produce bigger lift, in the use, the unmanned aerial vehicle of being convenient for uses.

2. The utility model discloses in, because two (or a plurality of) brushless motor, constitute by first stator and first rotor and second stator and second rotor part respectively, it possesses more excellent radiating efficiency, consequently, brushless motor on the unmanned aerial vehicle can operate at high rotational speed interval for a long time, because unmanned aerial vehicle has the very big power redundancy of reservation in the design, so it is to break down when certain a set of rotor of this many rotor motors or stator appears, another group's rotor and stator still can the short time operation, can descend safely or return to the journey under emergency, reduce crash accident probability.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a top view of a first rotor of the present invention;

fig. 3 is a partial top cross-sectional view of the first transmission shaft of the present invention;

FIG. 4 is a partial top view of the propeller of the present invention;

fig. 5 is a left side view of the present invention.

The labels in the figure are: 1. a mounting substrate; 2. a first base plate; 3. a first baffle plate; 4. a second baffle; 5. a second base plate; 6. a second stator; 7. a second rotor; 8. a second power take-off shaft; 9. a second drive shaft; 10. a propeller; 11. a fixing plate; 12. a first drive shaft; 13. a first power take-off shaft; 14. a first stator; 15. a first rotor; 16. a coil assembly; 17. fixing the disc; 18. a return spring; 19. a pull rod; 20. a hollow tube; 21. a circular plate; 22. a clamping rod; 23. an engaging groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

Embodiment one, referring to fig. 1, 4 and 5: many rotors brushless motor, including mounting substrate 1, mounting substrate 1 is provided with two altogether, and the top of two mounting substrate 1 is fixed with first bottom plate 2, the top of first bottom plate 2 is close to both sides edge and all is fixed with first baffle 3, the top of two first baffles 3 all is fixed with second baffle 4, first baffle 3 and second baffle 4 are an arc opening structure, in the use, can make brushless motor carry out the heat dissipation and handle, facilitate the use, be fixed with second bottom plate 5 between the top of two second baffles 4, the top of second bottom plate 5 is close to four corners and all threads have penetrated screw, and the bottom of screw runs through second baffle 4, first baffle 3, first bottom plate 2 and mounting substrate 1, run through second baffle 4 in the bottom of screw, first baffle 3, first bottom plate 2 and mounting substrate 1, thereby can be with second baffle 4, The first baffle plate 3, the first base plate 2 and the mounting base plate 1 are fixedly connected with the second base plate 5, so that the position of the brushless motor can be stably mounted and fixed, the top of the first base plate 2 is fixedly provided with a first stator 14 through screws, the top of the first stator 14 is rotatably connected with a first rotor 15, the first stator 14 and the first rotor 15 are the prior art, a first power output shaft 13 is arranged between the first stator 14 and the first rotor 15, the top end of the first power output shaft 13 extends to the outside of the first rotor 15, the first rotor 15 can rotate through the rotation of the first power output shaft 13, the top of the second base plate 5 is fixedly provided with a second stator 6 through screws, the position of the second stator 6 can be fixedly mounted through screws, the top of the second stator 6 is rotatably connected with a second rotor 7, the second stator 6 and the second rotor 7 are in the prior art, a second power output shaft 8 is arranged between the second stator 6 and the second rotor 7, the top end of the second power output shaft 8 extends to the outside of the second rotor 7, the second power output shaft 8 can drive the second rotor 7 to rotate, a plurality of coil groups 16 are fixed on the inner surface walls of the first rotor 15 and the second rotor 7 of the second power output shaft 8 at equal intervals along the circumferential direction, the coil groups 16 and the fixed disc 17 are in the prior art, the coil groups 16 are divided into two groups, the fixed disc 17 is fixed between one end of each group of the plurality of coil groups 16, the interiors of the first power output shaft 13 and the second power output shaft 8 are both in a hollow structure, the hollow structures in the first power output shaft 13 and the second power output shaft 8 can clamp the first transmission shaft 12 in the first power output shaft 13, so that the second transmission shaft 9 is clamped inside the second power output shaft 8, the first transmission shaft 12 and the second transmission shaft 9 are respectively clamped on the inner surface walls of the first power output shaft 13 and the second power output shaft 8, the fixing plate 11 is fixedly sleeved on the outer surface of the second transmission shaft 9, the fixing plate 11 can limit the position of the propeller 10, the propeller 10 is sleeved on the outer surface of the second transmission shaft 9 above the fixing plate 11, four screws penetrate through the top of the propeller 10 close to the center along the circumferential direction at equal intervals, the bottom ends of the screws penetrate to the outside of the fixing plate 11, the propeller 10 is sleeved on the outer surface of the second transmission shaft 9, the screws penetrate through the propeller 10 and the fixing plate 11, so that the position of the propeller 10 can be installed and fixed, and a brushless motor can be combined by the first stator 14 and the first rotor 15, the second stator 6 and the second rotor 7 can be combined into another brushless motor, in use, the two brushless motors are connected and installed through the first transmission shaft 12 and the second transmission shaft 9, the two brushless motors are connected in series through longitudinal combination to form coaxial output to drive a larger-size propeller 10 to generate larger lift force, in use, the unmanned aerial vehicle is convenient to use, because the two brushless motors are respectively composed of the first stator 14 and the first rotor 15, and the second stator 6 and the second rotor 7, the two brushless motors have better heat dissipation efficiency, the brushless motors on the unmanned aerial vehicle can operate in a high rotating speed interval for a long time, and because the unmanned aerial vehicle is designed to reserve great power redundancy, when a certain group of rotors or stators of the multiple rotor motors fail, the other group of rotors and stators can still operate in a short time, and can safely land or return to the ground under emergency, and the probability of crash accidents is reduced.

Example two, with reference to fig. 2 and 3: the outer surfaces of the first transmission shaft 12 and the second transmission shaft 9 are provided with four clamping grooves 23 at equal intervals along the circumferential direction near the bottom edge, the clamping grooves 23 are formed, so that the clamping rod 22 is clamped inside the clamping grooves 23, the top end of the first transmission shaft 12 penetrates through the second bottom plate 5 in a sliding manner, the top end of the first transmission shaft 12 extends into the second stator 6, the top end of the first transmission shaft 12 is fixedly connected with the bottom of the second power output shaft 8, the top end of the first transmission shaft 12 is fixed with the bottom of the second power output shaft 8, in use, when the first transmission shaft 12 rotates, the second power output shaft 8 is driven to rotate, so that the two brush motors can rotate together, the outer surfaces of the first power output shaft 13 and the second power output shaft 8 are welded with four hollow pipes 20 at equal intervals along the circumferential direction near the top edge, through the hollow tube 20, the position of the return spring 18 can be fixed, so that the return spring 18 can be stably used inside the hollow tube 20, the return spring 18 is welded on the inner surface wall of the hollow tube 20, the circular plate 21 is welded at one end of the return spring 18, the outer side of the circular plate 21 is slidably embedded with the inner surface wall of the hollow tube 20, the circular plate 21 slides inside the hollow tube 20, so that the circular plate 21 can extrude the return spring 18, when the circular plate 21 moves to extrude the return spring 18, the clamping rod 22 can be separated from the inside of the clamping groove 23, the first transmission shaft 12 and the second transmission shaft 9 can be conveniently detached, the damaged brushless motor can be conveniently and independently replaced, the clamping rod 22 is welded on the outer surface of one side of the circular plate 21, and one end of the clamping rod 22 extends to the inside of the first power output shaft 13 or the second power output shaft 8, the outer surface of the clamping rod 22 is clamped and connected with the inner surface wall of the clamping groove 23, the pull rod 19 is welded on the outer surface of the other side of the circular plate 21, one end of the pull rod 19 extends to the outside of the hollow tube 20, after the pull rod 19 is pulled, the circular plate 21 extrudes the return spring 18, the clamping rod 22 is contracted in the hollow tube 20, the first transmission shaft 12 and the second transmission shaft 9 are respectively clamped and connected in the first power output shaft 13 and the second power output shaft 8, after the clamping, the pull rod 19 is loosened, the clamping rod 22 is clamped and connected in the clamping groove 23 through the restoring force of the return spring 18, in use, the first power output shaft 13 and the first transmission shaft 12 can be connected and fixed, the second power output shaft 8 and the second transmission shaft 9 are connected and fixed, and because the top end of the first transmission shaft 12 is fixed with the bottom of the second power output shaft 8, in use, the two brushless motors can rotate together, and the use is convenient.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Multi-rotor brushless motor, including mounting substrate (1), its characterized in that: the mounting base plates (1) are provided with two mounting base plates (1), the top parts of the two mounting base plates (1) are fixedly provided with first base plates (2), the top parts of the first base plates (2) close to the edges of two sides are fixedly provided with first baffle plates (3), the top parts of the two first baffle plates (3) are fixedly provided with second baffle plates (4), a second base plate (5) is fixedly arranged between the top parts of the two second baffle plates (4), the top parts of the second base plates (5) close to four corners are provided with screws in a threaded penetrating manner, the bottom ends of the screws penetrate through the second baffle plates (4), the first baffle plates (3), the first base plates (2) and the mounting base plates (1), the top parts of the first base plates (2) are fixedly provided with first stators (14) through the screws, the top parts of the first stators (14) are rotatably connected with first rotors (15), and first power output shafts (13) are arranged between the first stators (14) and the interiors of the first rotors (15), and the top of first power output shaft (13) extends to the outside of first rotor (15), the top of second bottom plate (5) is fixed with second stator (6) through the screw, the top of second stator (6) is rotated and is connected with second rotor (7), be provided with second power output shaft (8) between the inside of second stator (6) and second rotor (7), and the top of second power output shaft (8) extends to the outside of second rotor (7), the interior table wall of first rotor (15) and second rotor (7) is fixed with a plurality of coil groups (16) along the equant distance of circle circumferencial direction, and is a plurality of coil group (16) divide into two sets ofly altogether, and is fixed with fixed disk (17) between the one end of a plurality of coil groups (16) of every group.

2. A multi-rotor brushless motor as defined in claim 1, wherein: the interior of the first power output shaft (13) and the interior of the second power output shaft (8) are both hollow structures, and the inner surface walls of the first power output shaft (13) and the second power output shaft (8) are respectively clamped with a first transmission shaft (12) and a second transmission shaft (9).

3. A multi-rotor brushless motor as claimed in claim 2, wherein: the surface of first transmission shaft (12) and second transmission shaft (9) is close to the equal distance in circumferencial direction and has seted up four block groove (23) near bottom edge, the top of first transmission shaft (12) slides and runs through second bottom plate (5), and the top of first transmission shaft (12) extends to the inside of second stator (6) to the top of first transmission shaft (12) and the bottom fixed connection of second power output shaft (8).

4. A multi-rotor brushless motor as defined in claim 1, wherein: four hollow pipes (20) are welded on the outer surfaces of the first power output shaft (13) and the second power output shaft (8) close to the top edge at equal intervals along the circumferential direction.

5. The multi-rotor brushless motor of claim 4, wherein: the welding of the interior table wall of hollow tube (20) has reset spring (18), the welding of the one end of reset spring (18) has plectane (21), and the outside of plectane (21) and the interior table wall of hollow tube (20) slip to inlay and establish.

6. The multi-rotor brushless motor of claim 5, wherein: the outer surface of one side of the circular plate (21) is welded with a clamping rod (22), one end of the clamping rod (22) extends to the interior of the first power output shaft (13) or the second power output shaft (8), and the outer surface of the clamping rod (22) is connected with the inner surface wall of the clamping groove (23) in a clamping mode.

7. The multi-rotor brushless motor of claim 5, wherein: the outer surface of the other side of the circular plate (21) is welded with a pull rod (19), and one end of the pull rod (19) extends to the outside of the hollow pipe (20).

8. A multi-rotor brushless motor as claimed in claim 2, wherein: the surface cover of second transmission shaft (9) is established and is fixed with fixed plate (11), the surface of second transmission shaft (9) is located the top cover of fixed plate (11) and is equipped with screw (10), the top of screw (10) is close to center department and has run through four screws along circumferencial direction equidistance screw, and the bottom of screw runs through to the outside of fixed plate (11).