CN202160085U

CN202160085U - Permanent magnetic direct current brushless hub motor

Info

Publication number: CN202160085U
Application number: CN2011202476993U
Authority: CN
Inventors: 刘钧
Original assignee: ZHEJIANG SUPER ELECTRICAL TECHNOLOGY Co Ltd
Current assignee: ZHEJIANG SUPER ELECTRICAL TECHNOLOGY Co Ltd
Priority date: 2011-07-14
Filing date: 2011-07-14
Publication date: 2012-03-07
Anticipated expiration: 2021-07-14

Abstract

A permanent magnetic direct current brushless hub motor belongs to the field of motors. The existing motor has the shortcomings of being big in volume, heavy in weight, more in consumed materials, big in noise, and low in efficiency. The permanent magnetic direct current brushless hub motor is mainly characterized in that the right end of a motor shaft is fixed inside a right end cover through a right bearing, and the left end is provided with a plane bearing which penetrates through a central hole on a left end cover to be fixed in clamping mode through three planet wheels of a non-gear planet reduction device. Speed of the motor can be reduced greatly through the non-gear planet reduction device, and big torque output is obtained. A one-way clutch is arranged on a casing end cover, an outer ring of the one-way clutch is connected with an outer ring of the non-gear planet reduction device through a steel pin, and an inner ring of the one-way clutch is fixedly connected with the casing end cover. The torque of the non-gear planet reduction device is delivered to the one-way clutch through the steel pin, the one-way clutch delivers the torque to a casing to drive the casing to rotate, and only when the rotary speed of the motor is higher than riding speed, the clutch can be connected. The permanent magnetic direct current brushless hub motor is small in volume, light in weight, small in noise, big in torque and high in efficiency.

Description

The permanent-magnet DC brushless wheel hub motor

Technical field

The utility model belongs to machine field, and is especially relevant with a kind of permanent-magnet DC brushless wheel hub motor.

Background technology

Electric motor car, electric bicycle are with environmental protection, safety, advantage such as light; Oneself is through more and more receiving the people of the world's welcome; And as the motor of electric bicycle core component, adopt at present all be that volume is big, Heavy Weight, the big and inefficient motor of many, the dry sounds of consumption material, because of the energy of electric motor car from battery; The weight of drive motors and efficient can directly have influence on the mileages of continuation of electric motor car; Therefore industry hopes that all the drive motors that a volume is little, in light weight, efficient is high can be arranged, and especially in countries such as America and Europes, hopes especially that electric motor car looks and will look like a bicycle.

Summary of the invention

The purpose of the utility model be exactly to overcome that the volume that existing motor exists is big, Heavy Weight, the big and inefficient shortcoming of many, the dry sounds of consumption material, the drive motors that a kind of volume is little, in light weight, noise is little, moment of torsion is big, efficient is high is provided.

For this reason, the utility model adopts following technical scheme: the permanent-magnet DC brushless wheel hub motor comprises motor stator, rotor, right end cap, left end cap, motor shaft, shell, shell end cap, left fixed shaft and right fixed shaft; Be pressed into motor shaft in the middle of the rotor, be pasted with rotor magnetic steel on the circumferential groove of rotor, stator clamp is loaded between the left and right end cap and is fixed by left and right end cap; Outer cover suit is in the end cap outside, and right fixed shaft is installed in the axis hole of shell through bearing fixing, and shell end cap lid is loaded on the motor left side; Left fixed shaft is installed on the shell end cap through bearing fixing; The shell end cap is fixedly connected with shell, it is characterized in that: the right-hand member of described motor shaft is fixed on the right end cap inboard through right bearing, and the left end of motor shaft is equipped with plane bearing; And pass the centre bore on the left end cap; Three planetary gears by the anodontia planetary reduction gear that is installed on the left end cap outside are fixedly clamped, and through anodontia planetary reduction gear motor are carried out big ratio and slow down, and have realized high pulling torque output; Cover in described shell end one-way clutch is housed; The outer ring of one-way clutch is connected through draw point with the outer ring of anodontia planetary reduction gear; Inner ring is fixedly connected with the shell end cap, by draw point the moment of torsion of anodontia planetary reduction gear is passed to one-way clutch, and one-way clutch passes to shell with moment of torsion and makes the shell rotation; Have only that clutch just can close when motor speed is higher than riding speed; This structure can reduce the resistance when riding, and through above new structure, this wheel hub motor has been realized small size, low power consumption and high efficiency.

As the further of technique scheme improved and replenish, the utility model also comprises following additional technical feature.

Evenly be stained with 12 high energy Nd-Fe-B magnet steels on the described rotor cylindrical, be evenly distributed with 18 magnetic poles on the circle in the stator.

The utility model can reach following beneficial effect: its volume is less than 1/3rd of common electric machine, and weight is also less than 1/3rd of common electric machine, and the copper of consumption and steel etc. are less than 1/4th of common electric machine, and efficient is up to more than 85%.

Description of drawings

Fig. 1 is the cutaway view of the utility model.

Among the figure, 1, motor shaft; 2, rotor; 3, rotor magnetic steel; 4, motor stator; 5, right end cap; 6, left end cap; 7, anodontia planetary reduction gear; 8, anodontia planetary reduction gear outer ring; 9, one-way clutch; 10, left fixed shaft; 11, right fixed shaft; 12, shell; 13, shell end cap; 14, draw point; 15, plane bearing; 16, right bearing.

Embodiment

Be described in detail below in conjunction with the embodiment of accompanying drawing the utility model.

As shown in Figure 1, the utility model comprises motor stator 4, rotor 2, right end cap 5, left end cap 6, motor shaft 1, shell 12, shell end cap 13, left fixed shaft 10 and right fixed shaft 11, and motor stator 4 is clipped between left end cap 6 and the right end cap 5; Be evenly distributed with 18 magnetic poles on the interior circle of stator 4; Be pressed into motor shaft 1 in the middle of the rotor 2, be pasted with 12 high energy Nd-Fe-B magnet steels 3 on the circumferential groove of rotor 2, the right-hand member of motor shaft 1 is fixed on right end cap 5 inboards through right bearing 16; Left end is equipped with plane bearing 15; And pass the centre bore on the left end cap 6, and being fixedly clamped by three planetary gears of the anodontia planetary reduction gear 7 that is installed on left end cap 6 outsides, shell 12 is set in the end cap outside; Right fixed shaft 11 is installed in the axis hole of shell 12 through bearing fixing; Shell end cap 13 lids are loaded on the motor left side, and left fixed shaft 10 is installed on shell end cap 13 through bearing fixing, and shell end cap 13 is fixedly connected with shell 12; One-way clutch 9 is housed on shell end cap 13, and the outer ring of this one-way clutch 9 is connected through draw point 14 with the outer ring of anodontia planetary reduction gear 8, and inner ring is fixedly connected with shell end cap 13.

The assembling process of the utility model is: at first rotor assembly is packed in the stator 4, be pressed into the right end cap 5 that oneself installs bearing, cover left end cap 6; Fix with six screws, anodontia planetary reduction gear 7 is contained on the left end cap 6, load onto the left fixed shaft 10 and right fixed shaft 11 at two ends with specific purpose tool; And electric wire passed from right fixed shaft, load onto the shell end cap 13 that oneself installs bearing and one-way clutch 9, the nut of screwing on; Screwing on, oneself installs the shell 12 of bearing, the outer nut of screwing on.

Applicability:

The utility model can directly be installed on the front fork as the electric bicycle drive motors, need not bicycle made any change just can directly repack electric motor car into; Motor lines is connected controller and battery just can directly drive, because this motor volume is little, in light weight; Efficient is high; The combination property of electric motor car is improved significantly, and through service testing on the spot, the distance travelled of a 36V10Ah battery is sailed more than 10 kilometers than common electric machine multirow.

Claims

1. permanent-magnet DC brushless wheel hub motor; Comprise motor stator (4), rotor (2), right end cap (5), left end cap (6), motor shaft (1), shell (12), shell end cap (13), left fixed shaft (10) and right fixed shaft (11); Be pressed into motor shaft (1) in the middle of the rotor (2); Be pasted with rotor magnetic steel (3) on the circumferential groove of rotor (2), stator (4) is clipped between left end cap (6) and the right end cap (5), and shell (12) is set in the end cap outside; Right fixed shaft (11) is installed in the axis hole of shell (12) through bearing fixing; Shell end cap (13) lid is loaded on the motor left side, and left fixed shaft (10) is installed on shell end cap (13) through bearing fixing, and shell end cap (13) is fixedly connected with shell (12); It is characterized in that: the right-hand member of described motor shaft (1) is fixed on right end cap (5) inboard through right bearing (16); The left end of motor shaft (1) is equipped with plane bearing (15), and passes the centre bore on the left end cap (6), is fixedly clamped by three planetary gears of the anodontia planetary reduction gear (7) that is installed on left end cap (6) outside; One-way clutch (9) is housed on described shell end cap (13), and the outer ring of this one-way clutch (9) is connected through draw point (14) with the outer ring (8) of anodontia planetary reduction gear, and inner ring is fixedly connected with shell end cap (13).

2. permanent-magnet DC brushless wheel hub motor as claimed in claim 1 is characterized in that: evenly be stained with 12 high energy Nd-Fe-B magnet steels (3) on described rotor (2) cylindrical, be evenly distributed with 18 magnetic poles on the interior circle of stator (4).