CN2534041Y

CN2534041Y - DC brushless electric wheel hub

Info

Publication number: CN2534041Y
Application number: CN02219771U
Authority: CN
Inventors: 田立兴
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-03
Filing date: 2002-04-03
Publication date: 2003-02-05
Anticipated expiration: 2012-04-03

Abstract

The utility model discloses a DC brushless motor vehicle wheel hub. The main technical proposal of the DC brushless motor vehicle wheel hub is that one end of the DC brushless motor is provided with a decelerator, and the hub cap of the DC brushless motor vehicle wheel hub is fixedly connected with a one-way clutch, so a motor vehicle wheel hub with a decelerator is formed. The motor vehicle wheel hub with a decelerator uses an armature as an internal stator. The left and the right two bearings are supported on an outer rotor. Because the motor torque is enlarged by the decelerator, the utility model has the advantages of strong climbing capacity, weight saving and no inversion, therefore, eliminating unsafe accident and decreasing resisting when automobile sliding.

Description

The brush DC electric wheel hub

Technical field

The utility model belongs to the vehicle technology field, is particularly useful for Electrical Bicycle, electro-tricycle, battery-operated motor cycle.

Background technology

Electrical Bicycle in the market, the automobile-used motor of electric three-wheel mostly be greatly the band retarder brush DC machine its advantage is arranged is the high efficiency region broad, operating range is longer, motor weight is lighter.Its shortcoming is brush failure factor always of moving contact.

What use brshless DC motor on the battery-driven car market is the electric wheel hub of the direct drive of decelerator-free mostly, and its advantage is that motor body is solid and reliable, and noise is low.But, also find numerous shortcomings of its existence in actual the use, such as on one or two frequency, resonance phenomena being arranged; The magnet steel that has behind the operation certain hour can come off; What have can turn round when the Control Driver et out of order.It is uncomfortable that these problems or make drive the people, or can cause safety misadventure.Other shortcoming of direct drive electric wheel hub is exactly that hill climbing ability and the ability of starting acceleration are relatively poor, and weight is bigger, and the resistance of electric wheel hub was bigger when motor outage back vehicle slided.

Analyzing the reason that produces the problems referred to above, mainly is by direct drive.Such as, because the direct drive magnet steel is subjected to bigger twist moment, magnet steel will come off when the insufficient strength of used adhesion agent own or stickup face have been untreated.Because direct drive is not adorned power-transfer clutch in the electric wheel hub, motor itself can positive and negative both direction rotation.Because direct drive, motor speed is lower, and the vibration that slot effect causes is very easy to be overlapped with the resonant frequency of casing and resonate.Because direct drive, the rotating speed of motor itself is lower, and the weight of motor is just big naturally.

Summary of the invention

The purpose of this utility model is the shortcoming that overcomes prior art, and a kind of brush DC electric wheel hub with retarder is provided.

The utility model comprises dc brushless motor, device at the retarder of dc brushless motor mouth, covers an affixed free-wheel clutch at the flower-drum of wheel hub, it is characterized in that with the armature being internal stator, about outer rotor is supported on two bearings.This has just made the electric wheel hub of a band retarder.Because retarder has been arranged, the rotating speed of motor own improves, and less in the torque of motor horsepower output same motor, the suffered twist moment of magnet steel is also less, the magnet steel difficult drop-off.Because retarder amplifies motor torque, climbing and starting acceleration capacity have been improved.Because motor speed is higher, the weight of whole electric wheel hub is also descended.Because the higher resonant frequency of avoiding shell of motor speed does not resonate.Because free-wheel clutch has been installed, motor can not reverse, no potential safety hazard, and resistance was less when vehicle was capable, helped to save the energy limited on the car.Because armature makes armature winding convenient as internal stator, is beneficial to and enhances productivity; Outer rotor by about two bearings, sound construction operates steadily.

Description of drawings

Figure one is a structural representation of the present utility model.

Among the figure, 1 is the flower-drum lid, and 2 is supporting cover, and 3 is bearing, and 4 is planet wheel spindle, 5 is satellite gear, and 6 is sun wheel, and 7 is axle, and 8 is bearing, and 9 is locating bush, 10 is bearing, and 11 is power-transfer clutch, and 12 is planetary wheel carrier, and 13 is right bearing, and 14 is internally toothed annulus, 15 is baffle plate, and 16 is the iron core support, and 17 is left bearing, and 18 is locating bush, 19 is bearing, and 20 is pig-tail wire, and 21 is armature loop, and 22 is armature core, 23 is rotor field spider, and 24 is magnet steel, and 25 is yoke ring, and 26 is the flower-drum seat.

In conjunction with the embodiments following and figure one is described further:

Iron core support 16, armature core 22, armature loop 21 are formed motor stator.Power supply and signal are from pig-tail wire 20 turnover.The electric current that is come by Control Driver feeds the rotation of armature drive rotor.Rotor is made up of magnet steel 24, yoke ring 25, rotor field spider 23, internally toothed annulus 14 and supporting cover 2.Whole rotor supports rotation by left bearing 17 and right bearing 13.Internally toothed annulus 14, satellite gear 5, sun wheel 6, planetary wheel carrier 12, planet wheel spindle 4 are formed retarder; The rotation of rotor is driven satellite gear and is rotated by internally toothed annulus 14 outputs.Because the combined action of internally toothed annulus 14 and motionless sun wheel 6 makes planet wheel spindle 4 and star wheel carrier 12 by the reduction ratio reduced power running of setting.Power-transfer clutch 11 is fixed on the flower-drum lid 1.Planetary wheel carrier drives power-transfer clutch and then drives flower-

drum lid

1 and 26 rotations of flower-drum seat.Flower-drum lid 1 and flower-drum seat 26 usefulness bearings 8 and bearing 19 are fixed on the axle.

Claims

1, a kind of brush DC electric vehicle hub, it comprise dc brushless motor, device at the retarder of dc brushless motor mouth, be fixed in the free-wheel clutch that the wheel hub flower-drum covers, it is characterized in that with the armature being internal stator, about outer rotor is supported on two bearings.