CN101820209B

CN101820209B - Coaxial double-output brushless motor

Info

Publication number: CN101820209B
Application number: CN2009101056520A
Authority: CN
Inventors: 金健
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-27
Filing date: 2009-02-27
Publication date: 2012-11-07
Anticipated expiration: 2029-02-27
Also published as: CN101820209A

Abstract

Power without torque in a special occasion is realized by a theory that positive torque and reversed torque are counteracted with each other in one axial line. The power is coaxially output after the positive torque is converted into the reversed torque, so the method has the defects of complex structure, large noise and low transmission efficiency. According to the invention, the positive torqueand the reversed torque are directly driven through two sets of power, and the power is output at the same side through a mode of shaft-in-shaft so as to remove a complex reversing structure. The embodiment of invention is that: a motor A and a motor B adopt an outer rotor brushless motor; stators of two motors are fixed on the same bearing sleeve, and bearings of the two motors are arranged in the bearing sleeve; the motor A adopt a hollow shaft, a middle part of the shaft is in close fit with a rotor A; one end of the shaft is in close fit with the bearings and the other end of the shaft isa power output end; structures of the motor B and the motor A are basically the same and mirror images with each other; and however, the shaft of the motor B outputs the power passing through the hollow shaft of the motor A. The coaxial double-output brushless motor has the advantages of large torque, small volume, low noise, high transmission efficiency, wide application range, and capability ofindependently controlling the rotating speed and the rotating direction of the two motors.

Description

A kind of coaxial double-output brushless motor

Technical field

The present invention relates to the power of specific (special) requirements such as a kind of inorganic rotor aircraft, torsionless blower fan.

Background technology

Needing a kind of power that does not have torque at some special occasions, is to utilize the principle that positive and negative torque is cancelled out each other on the axis to realize.Realized this power, all be to become counter-rotating just changeing through gear change in the past, is combined to counter-rotating axis and positive shaft axis on the center line again.This method complex structure, big, the transmission efficiency decline of noise.

Summary of the invention

The present invention directly drives rotating and reverse with two cover power, lets power export with the limit through " axle axis " mode, has abandoned complicated commutating structure.

The technical solution adopted for the present invention to solve the technical problems is: two motors (motor A, motor B) adopt outer rotor brushless motor, and magnet is fixed on the rotor inboard.Except that output shaft, the structure of two motors is identical, and mirror image each other.Two stator fixed in the same round the outside of the bearing sleeve, two motor bearings are also mounted on the inside of the bearing sleeve round.Fixedly ear is fixed on the central part of bearing holder (housing, cover), and fixedly the ear plane is the plane of symmetry of two motors.Different is that motor A output shaft is a hollow shaft, the stage casing and the rotor A tight fit of axle, and axle one end and two bearing tight fits, the other end is power output.The output shaft of motor B is solid step axle, big end and two bearing tight fits, and big end end and rotor B tight fit, small end then passes the outside outputting power of hollow shaft of motor A.Two motors are integral structures, but rotating speed, turn to and can independently control.

Beneficial effect of the present invention:

1, adopt integral structure, volume is little, noise is low, transmission efficiency is high.

2, adopt outer rotor brushless motor, torque is big, rotating speed is low, saves speed changing structure.

Description of drawings

Fig. 1 is a sketch map of the present invention.

Fig. 2 implements sketch map for the present invention at " driven helicopter ".

Among Fig. 1,1. stator, 2. coil, 3. rotor A, 4. output shaft A, 5. rotor B, 6. output shaft B, 7. magnet, 8. bearing, 9. bearing holder (housing, cover), 10. fixing ear.

Embodiment

In Fig. 1, fixedly ear (10) left side is motor A; The right side is motor B.Two motor stators are fixed on the same bearing holder (housing, cover) (9), and the bearing of two motors also is assemblied in this bearing holder (housing, cover).The output shaft A (4) of motor A is a hollow shaft, the stage casing and rotor A (3) tight fit of axle, and circle is covered with magnet (7) in the rotor.Output shaft A one end and bearing (8) tight fit, the other end are power output.The structure of motor A and motor B is basic identical, and mirror image each other, and the output shaft B (5) of different is motor B is the outside outputting power of hollow shaft that passes motor A.

In Fig. 2, two output shafts (2) of motor of the present invention (1) are fixedly connected following rotor (3) respectively, go up rotor (4), two rotor switched in opposite.Two steering wheels (6) are installed on the support (5), and when steering wheel moved, steering wheel drive motors output shaft and two rotors were the center of circle with hinge (7), forward and backward and left and right swing, the control aircraft forward, backward, left, translation to the right flight.Two rotors quicken to rising, slow down to descending simultaneously.When two gyroplane rotate speeds not simultaneously, aircraft is done clockwise or the inhour rotation along motor shaft.This Flight Vehicle Structure is simple, big from heavy and light, lift.

Claims

1 A coaxial dual-output brushless motor is used for special occasions without torque motor, external rotor motor for dual integrated structure, which includes a stator (1), the coil (2), the rotor A (3), the output axis A (4), a rotor B (5), the output shaft B (6), magnet (7), the bearing (8), the bearing sleeve (9), fixed hanger (10), characterized in that: in addition to the output axis, two motors the same structure, and are mirror images; two stator fixed in the same circle outside the bearing sleeve, the two motors in this bearing sleeve bearing assembly inner circle; two power output of the motor at the same end, one of the motor output A hollow shaft axis, and the other output shaft of the motor output shaft A, B through the outward axial bore and output power; fixing brackets to the axial center line of the bearing sleeve, the two motors fixed to the ear of the symmetry plane surface; two the same amount of load on the motor, turning the contrary, running synchronization.