CN207753593U

CN207753593U - The outer rotor brushless motor of fixed shaft type

Info

Publication number: CN207753593U
Application number: CN201820149616.9U
Authority: CN
Inventors: 谢奇峰
Original assignee: Dongguan Zhuo Qi Electronic Technology Co Ltd
Current assignee: Dongguan Zhuo Qi Electronic Technology Co Ltd
Priority date: 2018-01-29
Filing date: 2018-01-29
Publication date: 2018-08-21
Anticipated expiration: 2028-01-29

Abstract

The utility model discloses a kind of outer rotor brushless motor of fixed shaft type, including PM rotor, wound stator, fixing axle and shell, the fixing axle is in fixed setting, the wound stator is fixed in the fixing axle, bearing is equipped between the fixing axle and the shell, the PM rotor is fixed on the inner wall of the shell and around outside the wound stator, and when PM rotor rotation drives the shell to rotate.The outer rotor brushless motor of the utility model fixed shaft type can reduce the requirement of the circularity to motor output shaft, smoothness and concentricity, and reliability is high, effectively reduces cost.

Description

The outer rotor brushless motor of fixed shaft type

Technical field

The utility model is related to a kind of motor more particularly to a kind of outer rotor brushless motors of fixed shaft type.

Background technology

Traditional turbine or flabellum needs the output shaft of same motor to rotate and drives in rotation, the output shaft category of motor It is rotated in the output shaft of turbine or flabellum center of rotation or reference center, motor, then reference center is rotating, this is just to motor Intensity, the circularity of output shaft, the machining accuracies such as smoothness and concentricity have very high requirement；And with the variation of operating mode, electricity The output shaft of machine is worn, and deformation can bring the vibrations of load impeller etc., noise to increase, and mechanical loss increases, and power consumption increases, corrupted More acutely, to increase cost.In addition, when the output axis connection of traditional turbine or flabellum and motor, motor output is low Output shaft is then formed directly into locking and connects when torque, and but when motor exports high torque, then need separately to process metal Set, and need to be embedded in injection molding in injection molding impeller, this mode further increases the cost of hardware mold insert.

Utility model content

The purpose of this utility model is to provide a kind of outer rotor brushless motors of fixed shaft type, reduce to motor output shaft The requirement of circularity, smoothness and concentricity, and reliability is high, effectively reduces cost.

To achieve the goals above, the outer rotor brushless motor of fixed shaft type provided by the utility model includes that permanent magnet turns Son, wound stator, fixing axle and shell, the fixing axle are fixed in fixed setting, the wound stator in the fixing axle, Bearing is equipped between the fixing axle and the shell, the PM rotor is fixed on the inner wall of the shell and around institute It states outside wound stator, the PM rotor drives the shell to rotate when rotating.

The above two fixing piece is fixed preferably, being equipped between the fixing axle and the wound stator.

Compared with prior art, since the utility model is by being in fixed setting by the fixing axle, in the fixing axle One bearing is set between the shell, so as to so that the shell and the fixing axle relative rotation, and by will be described PM rotor is fixed in the shell, and therefore, the PM rotor can be driven in rotation outside the fixed shell Load rotation, to realize the output shaft of motor do not rotate but still can to load output torque, thus, load can not Using the output shaft of motor as reference center, the intensity of motor output shaft, circularity, smoothness and concentricity etc. are wanted to reduce It asks, greatly increases reliability, prolong the service life, while can remove from again and be connected using metallic sheath and load in high torque Requirement, effectively reduce cost.

Description of the drawings

Fig. 1 is the sectional view of the utility model fixed shaft type outer rotor brushless motor.

Fig. 2 is the internal structure chart of the utility model fixed shaft type outer rotor brushless motor.

Fig. 3 is the internal breakup figure of the utility model fixed shaft type outer rotor brushless motor.

Specific implementation mode

For the technology contents of the utility model, construction feature, the effect realized is described in detail, below in conjunction with embodiment And attached drawing is coordinated to be explained in detail.

As shown in Figure 1, Figure 2 and Figure 3, the outer rotor brushless motor 100 of the utility model fixed shaft type includes PM rotor 1, wound stator 2, fixing axle 3 and shell 4, the fixing axle 3 are fixed on the fixation in fixed setting, the wound stator 2 On axis 3, specifically, between the fixing axle 3 and the wound stator 2 it is equipped with and fixes the above two fixing piece 5, the fixing piece 5 in a ring shell-like, the fixing axle 3 be fixed by socket in the fixing piece 5, the fixation is socketed under the wound stator 2 Outside part 5.Bearing 6 is equipped between the fixing axle 3 and the shell 4, the quantity of the bearing 6 can be set as needed, this reality With novel setting two, be respectively arranged at the both ends of the endoporus of the shell 4, protect sign stress balance, the inner ring of the bearing 6 with The fixing axle 3 is fixed by socket, and the outer ring of the bearing 6 is fixed by socket with the shell 4.The PM rotor 1 is fixed on The inner wall of the shell 4 and around outside the wound stator 2, the PM rotor 1 drives 4 turns of the shell when rotating It is dynamic；The PM rotor 1 is multi-pole magnet, and the wound stator 2 is multipole wound stator.

Compared with prior art, since the utility model is by being in fixed setting by the fixing axle 3, in the fixing axle One bearing 6 is set between 3 and the shell 4, so as to so that the shell 4 and 3 relative rotation of the fixing axle, and pass through by The PM rotor 1 is fixed in the shell 4, and therefore, the PM rotor 1 can drive fixed described outer in rotation Outside shell 4 load rotation, to realize the output shaft of motor do not rotate but still can to load output torque, thus, bear Carry can not using the output shaft of motor as reference center, to reduce to the intensity of motor output shaft, circularity, smoothness and with one heart Degree etc. requirement, greatly increase reliability, prolong the service life, at the same can remove from again in high torque using metallic sheath with The requirement for loading connection, effectively reduces cost.

The knot of PM rotor 1 and wound stator 2 involved by the utility model fixed shaft type outer rotor brushless motor 100 Structure and operation principle are well known to those skilled in the art, and are not repeated to describe herein.

Above disclosed is only the preferred embodiments of the utility model, cannot limit the utility model with this certainly Interest field, therefore equivalent variations made according to the patent scope of the utility model still fall within the utility model and are covered Range.

Claims

1. a kind of outer rotor brushless motor of fixed shaft type, it is characterised in that：Including PM rotor, wound stator, fixing axle and Shell, the fixing axle are fixed in fixed setting, the wound stator in the fixing axle, the fixing axle and the shell Between be equipped with bearing, the PM rotor is fixed on the inner wall of the shell and around outside the wound stator, it is described forever Magnet rotor drives the shell to rotate when rotating.

2. the outer rotor brushless motor of fixed shaft type as described in claim 1, it is characterised in that：The fixing axle and the winding It is equipped between stator and fixes the above two fixing piece.