CN2375489Y - Hub drive for electric bicycle - Google Patents

Abstract

The utility model belongs to a driving device connected with a wheel through a motor. The utility model is chiefly used directly for a wheel of an electric bicycle, etc. The utility model primarily improves partial structural on the basis of the existing hub drive of the electric bicycle. The major technique characteristic of the utility model is that a gear is inlaid in a tray and the gear and the tray are combined into one body. A driving ring, a right end cover and a right bearing seat are integrated into one body which is replaced with an outer ring. A left end cover and a left bearing seat are integrated into one body which is replaced with a left cover. After improvement, the utility model fundamentally overcomes the disadvantages of low driving efficiency for the original hub, poor reliability and big noise, etc. Simultaneously the utility model also simplifies the process and reduces the cost.

Description

A kind of wheel hub of electric bicycle actuator

The utility model belongs to a kind of and drives assembling by motor and wheel bonded assembly.Mainly be directly used in the wheel of Electrical Bicycle, the wheel of Wheelchair car can also be directly used in electric motorcycle, electro-tricycle etc.

At present this similar device is existing emerges, and has selected a kind of more approaching wheel hub actuator here, makes background technology.With reference to Fig. 1, be existing wheel hub of electric bicycle actuator, it by screw [1], lead [2], motor shaft [3], bearing [4], key [5], carbon brush [6], spring [7], carboloy brush holder [8], magnet steel [9], back concentrating flux plate [10], armature plate [11], right end cap [12], drive circle [13], bonnet [14], protecgulum [15], gear [16], left end cap [17], gear [18], gear [19], left supporting base [20], thumb wheel [21], gear [22], gear stay bearing plate [23], pallet a[24], preceding concentrating flux plate a[25], right supporting base [26] forms.Carbon brush group that its structure: A is made of carbon brush [6], spring [7], carboloy brush holder [8] and bonnet [14], glue bond.Back concentrating flux plate [10] is screwed on bonnet [14], and magnet steel [9] sticks with glue on the concentrating flux plate of back, and axle [3] is connected and fixed with screw and bonnet and constitutes motor bonnet group.Armature plate [11] and pallet a[24] stick with glue and connect, constitute the armature group.The armature group matches by bearing and axle and locatees.Gear [22] is screwed at armature group pallet a[24] on, motor protecgulum [15] closes.Constitute a complete motor part by motor bonnet group and armature group this moment.B gear [16] and gear [18] link together by stay bearing plate [23] and key [5], constitute the supporting base group.The bearing location of supporting base group and protecgulum [15], gear this moment [22] and gear [16] engagement, gear [19] cooperates with shaft alignment with bearing, and mesh with gear [18], constituted the deceleration part of wheel hub thus, C thumb wheel [21], left end cap [17], left supporting base [20] connect with screw, constitute clutch pack.Right end cap [12], driving circle [13], right supporting base [26] connect by screw, constitute to drive the circle group.Two groups constitute housing parts again.

This three part of A.B.C combines by bearing and screw, becomes a complete wheel hub actuator.

The principle of work of existing cycle hub actuator is: when electric current passes through lead [2], pass to carbon brush, carbon brush contacts with the armature plate end face of armature group, armature plate is rotated produce torque, armature plate drives the armature group and rotates, and the armature group is driven gear [22] again, gear [22] and gear [16] engagement.Gear [16] rotates by key driven gear [18], and gear [18] and gear [19] engagement, gear [19] are passed to wheel hub to torque at last and driven circle [13] by thumb wheel clutch parts such as [21], drive wheel.

Existing wheel hub actuator satisfies operating needs substantially, uses on Electrical Bicycle and has brought into play certain positive role.But in use its mechanical wear is big, and drive efficiency is low, and maintainability is poor, and noise is big, the requirement of the relevant GB of out of reach.

The purpose of this utility model is: at the shortcoming that above-mentioned wheel hub exists, it is carried out structural improvement, make it to reach stable and reliable for performance, raise the efficiency, obviously reduce noise, simplify assembly technology simultaneously, reduce manufacturing cost.

Major technique feature of the present utility model is: gear is bumped in the pallet and becomes one, wheel hub driving circle, right end cap, right supporting base are designed to one, replace with the part in outer ring, left end cap, left supporting base are designed to one, replace with left side part of lid, protecgulum and gear support plate are designed to one, cover a part with supporting and replace, and the armature plate both ends of the surface are sticked on the semi-solid preparation material.

Below in conjunction with accompanying drawing utility model is described in detail.

Fig. 1, be the general assembly drawing of existing wheel hub of electric bicycle actuator.

Fig. 2, be general assembly drawing of the present utility model.

Fig. 3, be the special-purpose square hole clamp figure of the utility model and bicycle assembling.

Fig. 4, be the left view of Fig. 3.

With reference to Fig. 2, the utility model by screw [1], lead [2], motor shaft [3], bearing [4], key [5], carbon brush [6], spring [7], carboloy brush holder [8], magnet steel [9], back concentrating flux plate [10], armature plate [11], outer ring [27], motor bonnet [28], motor before concentrating flux plate b[29], left side lid [30], gear support lid [31], pallet b[32], gear [33], gear [34], clutch base [35], back-up ring [36], square hole clamp [37], gear [18], gear [16] form

With reference to Fig. 1,2, the utility model and existing wheel hub actuator Fig. 1 are basic identical.Different (that is: major technique features) are: gear [34] is bumped into pallet b[32] in become one, driving circle [13], right end cap [12], right supporting base [26] are designed to one, replace with [27] parts in outer ring, left end cap [17], left supporting base [20] are designed to one, replace with a left side [30] parts of lid, protecgulum [15], gear support plate [23] are designed to one, replace with [31] parts of supporting lid, stick on one deck semi-solid preparation material in the armature plate both ends of the surface.

With reference to Fig. 2 .3, added special fastener---a square hole clamp [37] that assembles with bicycle wheel carrier or other vehicle wheel frame at the two ends of motor shaft [3].

The gear [34] of new change is bumped into pallet b[32] in become one, mainly be the span that increases the armature plate location, reduce axial runout.Driving circle [13], right end cap [12], right supporting base [26] are designed to one, and left end cap [17], left supporting base [20] are designed to one, mainly are the thickness that increases whole wheel hub circle and end cap, improve whole rigidity Cheng Du, improve shop characteristic.Protecgulum [15], gear support plate [23] are designed to one, mainly are to simplify assembly technology, increase ingear reliability between gear.Stick on half admittedly for material in the armature plate both ends of the surface, as: semi-solid preparation adhesive plasters etc. mainly are to reduce face runout, reduce or eliminate motor and wipe the sheet phenomenon.

Principle of work of the present utility model is identical with the principle of work of existing cycle hub.

By test and practical probation to model machine, the utility model reaches design goal fully, and the rigidity and the consumed power that have effectively improved wheel hub obviously descend than original, noise obviously reduces, the stability and the reliability of operation improve accordingly, simplified manufacturing process, and cost decreases.

Fig. 2, the 3rd, the technical application scheme that the utility model is basic also is a preferred example.A part of standard parts and components used in the scheme can be purchased from market.Part specialized spare part can adopt common metal material and ordinary heat treatment manufacturing.

Claims (2)

1, a kind of screw [1] that contains, lead [2], motor shaft [3], bearing [4], key [5], carbon brush [6], spring [7], carboloy brush holder [8], magnet steel [9], back concentrating flux plate [10], armature plate [11], gear [16], the cycle hub actuator of gear [18], it is characterized in that: gear [34] is bumped into pallet b[32] in become one, drive circle [13], right end cap [12], right supporting base [26] is designed to one, replace with outer ring [27], left end cap [17], left side supporting base [20] is designed to one, replace with left side lid [30], protecgulum [15], gear support plate [23] is designed to one, replace with supporting lid [31], stick on one deck semi-solid preparation material at the armature plate two ends.

2, cycle hub actuator according to claim 1 is characterized in that: respectively increase special fastener---a square hole clamp [37] that assembles with bicycle wheel carrier or other vehicle wheel frame at the two ends of motor shaft [3].

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