CN201357921Y

CN201357921Y - Driving wheel structure of an electric two-wheeled vehicle

Info

Publication number: CN201357921Y
Application number: CNU2009200071590U
Authority: CN
Inventors: 陈永新
Original assignee: Kwang Yang Motor Co Ltd
Current assignee: Kwang Yang Motor Co Ltd
Priority date: 2009-02-27
Filing date: 2009-02-27
Publication date: 2009-12-09
Anticipated expiration: 2019-02-27

Abstract

A driving wheel structure of an electric two-wheeled vehicle at least comprises a fixing shaft, a hub motor, a brake component and a rim. The hub motor is fixedly arranged on the fixing shaft, the fixing shaft is fixedly arranged on a rear fork of the electric two-wheeled vehicle, one end of the fixing shaft is provided with an penetrated hole for penetrating with a power cord, two sides of the hub motor are provided with cover bodies, at least one cover body is provided with the brake component, the brake component at least consists of a brake disc base and a brake lining shoe group, and a shaft sleeve portion is arranged on the brake disc base. Besides, the cover body provided with the brake component is convexly provided with a bearing block, an oil seal seat is arranged on the bearing block, the oil seal seat is provided with an oil seal, the shaft sleeve portion of the brake disc base is provided with an annular groove, and an O-shaped ring is arranged in the annular groove. A clearance between the fixing shaft and the shaft sleeve portion can be fully filled by aids of the oil seal and the O-shaped ring, and then, dust and water can not enter the cover bodies from the clearance, thereby preventing a bearing and the hub motor from being damaged by entered water.

Description

Electric bicycle drive wheel structure

[technical field]

The utility model is about a kind of electric bicycle drive wheel structure, particularly prevents that about a kind of reaching dust, moisture from entering the structure in the hub motor.

[background technology]

The start principle of general motor bike; be to be that drive source occupies dominant position with the engine mostly; but from viewpoints such as environmental protection, carbon reduction, reduction noises, the electric bicycle that utilizes electric power to drive, just be present government the vehicle actively promoted.

The driving of existing electric bicycle, see also shown in Figure 1, it mainly is a periphery of the wheel rim 10 of trailing wheel 1 being located at hub motor 11, anchor shaft 12 then combines the back and locks with nut 14 with the back vent 13 of electric bicycle, these hub motor 11 2 sides are arranged with a left side respectively, right cover body 15,16, this left side, right cover body 15, the 16th, be attached on the wheel rim 10, and these left cover body 15 central authorities have a bearing seat 151, be provided with a bearing 152 in this bearing seat 151, bearing seat 151 has outwards extended a brake drum 153, these brake drum 153 outsides are arranged with a brake disc seat 17, this brake disc seat 17 has a shaft sleeve part 171, this shaft sleeve part 171 is to be sheathed on the anchor shaft 12, and be resisted against bearing 152 edges of bearing seat 151, wherein, this anchor shaft 12 is provided with a perforation 121, but these perforation 121 power supply source lines are in to wear energising, and anchor shaft 12 2 ends are fixed by nut 14, after hub motor 11 is switched on, this hub motor 11 can produce electromagnetic force, and make a left side, right cover body 15,16 drive trailing wheels 1 produces rotation, and then the purpose that makes electric bicycle reach advancing forward.

Existing electric bicycle is by above-mentioned structure, though can reach the purpose that electric bicycle is advanced, yet, because this left side, right cover body 15,16 with brake disc seat 17 because of the relation of wheel rim 10 beats, upward need preset clearance 18 in design, extraneous water then arrives the inside of bearing 152 and hub motor 11 easily along this gap 18, in addition, because if the axis hole of shaft sleeve part 171 and anchor shaft 12 in group immediately, are to adopt sliding design of joining, therefore in drenching with rain by bike for a long time, rainwater is advanced in the hub motor 11 by shaft sleeve part 171 place's seepages easily, and then cause damage, and bearing 152 has some setbacks the harm of generation safety because of the corrosion start.

Because existing electric bicycle has above-mentioned disappearance, so will how providing one, can to reach convenient group upright and overcome because of preset clearance causes moisture content and infiltrate hub motor in-to-in disappearance, the real problem of demanding urgently overcoming for present battery-operated motor cycle manufacturer.

[utility model content]

The utility model provides a kind of electric bicycle drive wheel structure, can overcome because of preset clearance causes moisture content to infiltrate hub motor in-to-in disappearance.

Major technique means of the present utility model, be to provide a kind of electric bicycle drive wheel structure, this drive wheel includes an anchor shaft at least, one hub motor, one brake assemblies and a wheel rim, this hub motor is to be fixedly arranged on the anchor shaft, anchor shaft then is fixedly arranged on the back vent of electric bicycle, but this anchor shaft one end is provided with perforation power supply source line and wears, these hub motor two side covers are provided with lid, be provided with brake assemblies in one of them lid, this brake assemblies has brake disc seat and Lining group at least, and this brake disc seat is provided with shaft sleeve part, wherein, this is provided with on the lid of brake assemblies is to convex with bearing seat, and this bearing seat is provided with an oil seal seat, this oil seal seat is provided with an oil sealing, the shaft sleeve part of brake disc seat then is provided with an annular groove, is provided with O shape ring in this annular groove, the gap of anchor shaft and shaft sleeve part can be filled up by this oil sealing and O shape ring, dust and moisture can't be entered in the lid by the gap, cause damage because of water inlet to prevent bearing and hub motor.

[description of drawings]

Fig. 1 is the generalized section of existing electric bicycle drive wheel.

Fig. 2 is the schematic side view of the utility model electric bicycle.

Fig. 3 is the three-dimensional exploded view of the utility model electric bicycle drive wheel.

Fig. 4 is the generalized section of the utility model electric bicycle drive wheel.

1 trailing wheel, 10 wheel rims, 11 hub motors

121 perforation of 12 anchor shafts

13 back vents, 14 nuts

15 left cover bodies, 151 bearing seats

152 bearings, 153 brake drums

16 right cover bodies, 17 brake disc seats

171 shaft sleeve part, 18 gaps

2 electric bicycles, 21 back vents

3 steering hardwarees, 31 steering handles, 32 Shock absorbers

4 followers

5 power units

6 seat cushions

711 perforation of 7 drive wheels, 71 anchor shafts

712 smooth sections 72 hub motors

720 right cover bodies, 721 left cover bodies

722 brake drums, 723 bearing seats

7231 bearings, 724 oil seal seats

7241 oil sealings, 73 brake assemblies

731 brake disc seats, 7311 shaft sleeve part

7312 annular groove 7313O shapes ring

732 Lining groups

74 wheel rims, 741 tires

75 are connected part 76 nuts

77 packing rings

[specific embodiment]

Can be easier to the effect understanding structure of the present utility model and can reach for making, cooperate graphic explanation as the back now:

At first, see also shown in Figure 2ly, electric bicycle 2 of the present utility model includes a steering hardware 3, a follower 4, a battery 5, a seat cushion 6 and a drive wheel 7 at least.

Steering hardware 3 is provided with a steering handle 31, and this steering hardware 3 has extended a Shock absorber 32 downwards, and this Shock absorber 32 is pivoted with a follower 4.

Follower 4 is the place aheads that are arranged at electric bicycle 2, by turning to of rotation steering hardware 3 may command followers 4.

Battery 5 is the belows that are arranged at electric bicycle 2 seat cushions 6, and this battery 5 is to be connected in the drive wheel 7 with a power lead.

Seat cushion 6 can supply comfortable the taking of steerman, is provided with a drive wheel 7 in the below of seat cushion 6.

Drive wheel 7 sees also shown in Figure 3ly, and this drive wheel 7 includes an anchor shaft 71, a hub motor 72, a brake assemblies 73 and a wheel rim 74 at least.

Anchor shaft 71 is provided with a perforation 711, but these perforation 711 power supply source lines wear, all cut smooth section 712 in the two ends of axle drive shaft 71 bodies, be installed with hub motor 72 in the central authorities of anchor shaft 71.

Hub motor 72, two sides are to be covered with left and right lid 721,720, convex with a brake drum 722 and a bearing seat 723 on left cover body 721, and this bearing seat 723 is provided with a bearing 7231, be provided with an oil seal seat 724 in this bearing seat 723 in addition, this oil seal seat 724 is provided with an oil sealing 7241.

Brake assemblies 73, at least have a brake disc seat 731 and a Lining group 732, extended a shaft sleeve part 7311 on this brake disc seat 731, then be provided with an annular groove 7312 in this shaft sleeve part 7311, be provided with O shape ring 7313 in this annular groove 7312, Lining group 732 is then coated by the brake drum 722 of left cover body 721.

Wheel rim 74 is outer peripheral edges of being located at hub motor 72, and these wheel rim 74 peripheries are provided with tire 741, and the electromagnetic force that produces by this hub motor 72 can make wheel rim 74 rotate.

The utility model is when implementing, please cooperate Fig. 4 to consult, be that bearing 7231 is arranged in the bearing seat 723 of left cover body 721, and with a left side, right cover body 721,720 are sheathed on anchor shaft 71 2 sides, be attached on the wheel rim 74 with screw, then oil sealing 7241 is worn to the oil seal seat 724 of left cover body 721 by anchor shaft 71 2 sides and located, after again O shape ring 7313 being arranged in the annular groove 7312 of brake disc seat 731, brake disc seat 731 is set in the anchor shaft 71 with shaft sleeve part 7311, and it is sheathed with a packing ring 77, to be connected with a back vent 21 that is connected part 75 again and be inserted in anchor shaft 71 2 sides, lock with nut 76, wherein, the shape of the through hole of this linking part 75 and packing ring 77 is that smooth section 712 with anchor shaft 71 is corresponding, whereby, anchor shaft 71 can be fixed on the back vent 21, therefore when 72 energisings of the hub motor on the anchor shaft 71 produced electromagnetic force, this wheel rim 74 can produce rotation by magnetic coil, and then makes electric bicycle 2 reach the purpose of advancing.

Effect of the present utility model is, by an oil seal seat 724 is set on the bearing seat 723 of left cover body 721, and an oil sealing 7241 is set in oil seal seat 724, one annular groove 7312 then is set in the brake disc seat 731, and be provided with O shape ring 7313 in the annular groove 7312, utilize this oil sealing 7241 and O shape ring 7313 anchor shaft 71 and the gap of shaft sleeve part 7311 can be filled up, can make moisture infiltrate a left side whereby by the gap, right cover body 721, in 720, and then can prevent that bearing 7231 from having some setbacks because of corrosion rotates, and avoid hub motor 72 to cause damage because of water inlet, by the setting of this oil sealing 7241 and O shape ring 7313, also can reach effectively isolated dust and enter a left side in addition, right cover body 721, effect in 720.

In sum, the utility model can reach the purpose and the effect of institute's demand really by above-mentioned electric bicycle drive wheel structure.

Claims

1. electric bicycle drive wheel structure, this drive wheel includes an anchor shaft at least, one hub motor, one brake assemblies and a wheel rim, this hub motor is fixedly arranged on the anchor shaft, anchor shaft then is fixedly arranged on the back vent of electric bicycle, this anchor shaft one end is provided with perforation power supply source line and wears, these hub motor two side covers are provided with lid, be provided with brake assemblies in one of them lid, this brake assemblies has brake disc seat and Lining group at least, and this brake disc seat is provided with shaft sleeve part, it is characterized in that: this is provided with on the lid of brake assemblies and convexes with bearing seat, this bearing seat is provided with an oil seal seat, and this oil seal seat is provided with an oil sealing, and the shaft sleeve part of brake disc seat then is provided with an annular groove, be provided with O shape ring in this annular groove, the gap of anchor shaft and shaft sleeve part filled up by this oil sealing and O shape ring.

2. electric bicycle drive wheel structure as claimed in claim 1 is characterized in that: the two ends cutting of this anchor shaft has smooth section.

3. electric bicycle drive wheel structure as claimed in claim 1 is characterized in that: this anchor shaft one side is to be connected part with one to combine with back vent.

4. electric bicycle drive wheel structure as claimed in claim 1, it is characterized in that: this lid includes left and right lid.

5. electric bicycle drive wheel structure as claimed in claim 4, it is characterized in that: this brake assemblies is located on the left cover body.