CN206226201U - Minisize electric bicycle wheel hub motor - Google Patents
Minisize electric bicycle wheel hub motor Download PDFInfo
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- CN206226201U CN206226201U CN201620697256.7U CN201620697256U CN206226201U CN 206226201 U CN206226201 U CN 206226201U CN 201620697256 U CN201620697256 U CN 201620697256U CN 206226201 U CN206226201 U CN 206226201U
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Abstract
The utility model is related to a kind of Minisize electric bicycle wheel hub motor, it is characterized in that：Main shaft includes right side main shaft and left side main shaft, the right-hand member of left side main shaft is in flange plate type multi-diameter shaft, the flange plate type multi-diameter shaft is affixed with bearing, the outer ring of bearing is affixed with ring gear inner circle, the ring gear internal tooth is engaged with planetary gear, center planetary gear hole is by bearings on eccentric shaft, eccentric shaft is by bearings on the main shaft of right side, right side main shaft and left side main shaft grafting simultaneously constitute one-piece rotor shaft by bearings, eccentric shaft outboard end is connected with rotor, stator is bonded with right side main shaft, ring gear is cylindrical to slidably connect freewheel clutch, its is cylindrical affixed with main shell, planetary gear end face is connected with bearing pin, it is axially arranged with pin shaft hole along it on the flange plate type multi-diameter shaft of left side main shaft, in the bearing pin insertion pin shaft hole.Beneficial effect：The positive speed reducing ratio or negative speed reducing ratio that the utility model is used are slowed down and export dynamic structure, can be substantially reduced motor outside dimension and weight.
Description
Technical field
The utility model belongs to electric bicycle hub motor, more particularly to a kind of Minisize electric bicycle wheel hub motor.
Background technology
At present, electric bicycle hub motor has two kinds of direct driving motor and reducing motor.In order to required for ensureing to ride
Driving torque, direct driving motor must increase motor size could meet torque demand, therefore direct driving motor is general all very heavy,
Miniaturization, the light-weighted market demand can not be met.In order to meet the market demand, manufacturer releases a inside and subtracts with planet again
The deceleration wheel hub motor of fast structure, greatly reduces the appearance and size of motor.The straight wheel hub motor that drives is subtracted by diameter phi 160-200mm
It is small to have arrived φ 100-120mm.As above, although have a no small progress, but the miniaturization lightweight demand of consumer also therewith
Improve, it is desirable to smaller wheel hub motor, but the reducing motor structure of existing planetary reduction gear structure is：There is a driving link at center
Sun gear, is evenly equipped with three planetary gears and sun gear external toothing around sun gear, three planetary gears simultaneously with planetary gear periphery
Gear ring internal messing, therefore the radial dimension of existing planetary speed reduction hub motor have to be larger than sun wheel diameter plus two planetary gears
Diameter adds gear ring thickness and outer casing thickness.In above-mentioned several parts, sun gear is subject to electric machine main shaft size and minimum number of teeth
Limitation, planetary gear is limited by planet wheel support bearing (bearing bore diameter 8, external diameter 22mm, thickness 7mm) size.Reduce gear die
Number can reduce certain size, but electric bicycle motor will not only transmit motion but also require transmission relatively high power (generally
250 watts or so).Therefore module can not be too small.For example, in above-mentioned planetary reduction gear structure, planetary gear and ring gear are interior
Engagement, total number of teeth in engagement is 2-3 teeth, and planetary gear and sun gear are external toothing, and total number of teeth in engagement only has 1 tooth, thus planetary gear with too
Sun wheel engagement place is weakest link, even with three planetary gears, while total number of teeth in engagement also only has 3 teeth, therefore gear die
Number generally more than 1.0, to prevent broken teeth.Limited by above-mentioned condition, wheel hub motor size cannot further reduce, small-sized
Change process encounters bottleneck, stagnation.Further miniaturization turns into industry problem urgently to be resolved hurrily to wheel hub motor size.
Utility model content
The purpose of this utility model is to overcome the shortcomings of above-mentioned technology, and provides a kind of Minisize electric bicycle wheel hub electricity
Machine, makes wheel hub motor diameter be reduced to φ 70-73mm, breaks through prior art bottleneck, significantly reduces motor overall dimensions, very well
Meet the market demand.
The utility model to achieve the above object, using following technical scheme：A kind of Minisize electric bicycle wheel hub motor,
Including the hub motor shell that main shaft, stator, rotor, main shell and end cap are constituted, it is characterized in that：The main shaft includes right side master
Axle and left side main shaft, the left side main shaft shape are in three-stage multi-diameter shaft, and the right-hand member of left side main shaft is in flange plate type multi-diameter shaft, institute
Flange plate type multi-diameter shaft is stated affixed with the inner ring of ring gear spring bearing, in the outer ring of the ring gear spring bearing and ring gear
Circle is affixed, and the ring gear internal tooth is engaged with planetary gear, and the center planetary gear hole passes through Supporting Planetary Gears bearing branch
On eccentric shaft, eccentric shaft supports left side bearing and eccentric shaft supports right side bearing to be supported on right side main shaft by eccentric shaft for support
On, right side main shaft constitutes one-piece rotor shaft with left side spindle hole grafting, on the right side main shaft between left side main shaft and eccentric shaft
Eccentric shaft side block bearing is connected with, the eccentric shaft outboard end is connected with rotor, and the stator is bonded with right side main shaft, it is described interior
Gear ring is cylindrical to slidably connect freewheel clutch, and freewheel clutch is cylindrical affixed with main shell, and hub motor shell passes through end cap
Spring bearing and main shell spring bearing are supported on one-piece rotor shaft, and the planetary gear end face is uniform and is connected with several pins
Axle, axially pin shaft hole is provided with correspondence bearing pin position on the flange plate type multi-diameter shaft of left side main shaft along it, and the bearing pin inserts bearing pin
Kong Zhong；Planetary gear can only constitute main story in ring gear centered on eccentric shaft, revolution motion of the eccentric throw as revolution-radius
The deceleration output dynamic structure of dynamic ratio.
The ring gear and left side main shaft fix integral, and the freewheel clutch is cylindrical affixed with main shell, surmount from
Clutch inner circle slidably connects power output disk, and the power output disk is axially arranged with some power output banking pins along it
Axis hole, the bearing pin of the power output disk pin shaft hole correspondence grafting planetary gear end face, planetary gear can in ring gear
Centered on eccentric shaft, revolution motion of the eccentric throw as radius, while making rotation again, the deceleration output power of negative gearratio is constituted
Structure.
Balance weight is connected with the eccentric shaft.
The pin shaft hole and be 3-8 with the bearing pin quantity of its grafting.
Beneficial effect：Compared with prior art, the deceleration of the clockwise or counterclockwise that the utility model is used
Output dynamic structure, can be substantially reduced motor outside dimension and weight.According to the front fork and back vent width of electric bicycle
Standard designs axial dimension, after bicycle, almost can not discover the presence of motor, and its power output and gear are engaged
Intensity reaches the standard of bicycle, and then meets the market demand of lightweight miniaturization.
Brief description of the drawings
Fig. 1 is the longitudinal sectional view of embodiment 1；
Fig. 2 is the A-A of embodiment 1 to sectional view；
Fig. 3 is the B-B direction sectional view of embodiment 1；
Fig. 4 is the reducing gear explosive view of embodiment 1；
Fig. 5 is the longitudinal sectional view of embodiment 2；
Fig. 6 is the C-C of embodiment 2 to sectional view；
Fig. 7 is the D-D of embodiment 2 to sectional view.
In figure：1st, right side main shaft, 2, stator, 3, rotor, 4, eccentric shaft, 5, eccentric shaft supports right side bearing, 5-1, bias
Axle support left side bearing, 5-2, eccentric shaft side block bearing, 6, Supporting Planetary Gears bearing, 7, planetary gear, 8, bearing pin, 9, internal tooth
Circle, 10, ring gear spring bearing, 11, left side main shaft, 11-1, pin shaft hole, 12, main shell, 13, main shell spring bearing, 14,
Freewheel clutch, 15, end cap, 16, endcap support bearing, 17, balance weight, 18, power output disk, 18-1, power output circle
Disk pin shaft hole.
Specific embodiment
Specific embodiment of the present utility model is described in detail with reference to preferred embodiment.
Embodiment 1
Refer to accompanying drawing 1,4, a kind of Minisize electric bicycle wheel hub motor, including main shaft, stator 2, rotor 3, main shell 12
The hub motor shell constituted with end cap 15, the main shaft includes right side main shaft 1 and left side main shaft 11, the left side main shaft shape
In three-stage multi-diameter shaft, the right-hand member of left side main shaft is in flange plate type multi-diameter shaft, and the flange plate type multi-diameter shaft is supported with ring gear
The inner ring of bearing 10 is affixed, and the outer ring of the ring gear spring bearing is affixed with the inner circle of ring gear 9, the ring gear internal tooth and row
Star gear 7 is engaged, and the center planetary gear hole is supported on eccentric shaft 4 by Supporting Planetary Gears bearing 6, and eccentric shaft passes through
Eccentric shaft support left side bearing 5-1 and eccentric shaft supports right side bearing 5 are supported on the main shaft of right side, right side main shaft and left side main shaft
Centre bore grafting constitutes one-piece rotor shaft, and eccentric shaft side block bearing 5- is connected with the right side main shaft between left side main shaft and eccentric shaft
2, it plays a part of the small bounce of limitation rotor and axial float, it is to avoid noise, rotation is steady.The eccentric shaft outboard end connects
Rotor is connected to, the stator is bonded with right side main shaft, the ring gear is cylindrical to slidably connect freewheel clutch 14, overdrive clutch
Device is cylindrical affixed with main shell, and hub motor shell is supported on entirety by endcap support bearing 16 and main shell spring bearing 13
On main shaft, the planetary gear end face is uniform and is connected with several bearing pins 8, and the present embodiment bearing pin quantity is 8.Left side main shaft
Flange plate type multi-diameter shaft on be axially provided with pin shaft hole 11-1 in correspondence bearing pin position along it, in the bearing pin insertion pin shaft hole；OK
Star gear in ring gear can only centered on eccentric shaft, revolution motion of the eccentric throw as revolution-radius, constitute positive drive than
Slow down output dynamic structure.In order to eliminate the vibration of eccentric generation, balance weight 17 is installed on eccentric shaft, it is ensured that dynamic balancing.
The course of work and principle
Eccentric shaft engages to planetary gear input power, planetary gear with internal gear, planetary bearing pin insertion left side
The pin shaft hole of main shaft, and the structure that power is constituted is exported by freewheel clutch
In embodiment 1, as Figure 1-3, when rotor drives eccentric shaft to turn clockwise, planetary bearing pin is fixed in
It is inserted into the main shaft pin shaft hole of left side, and left side main shaft is maintained static, and has limited planetary spinning motion, planetary gear
In ring gear can only centered on eccentric shaft, eccentric throw make clockwise revolution motion for revolution-radius；Again due to row
Few 3 teeth of the star gear ratio ring gear number of teeth, force ring gear to make low speed rotation clockwise.Now ring gear low speed rotation subtracts
Fast ratio is：Planetary gear Z1=45, ring gear Z2=48, speed reducing ratio i=Z2/ (Z2-Z1)=48/ (48-45)=16.Gearratio
It is positive number, i.e., main shell direction of rotation is identical with eccentric shaft direction of rotation.Power output part is ring gear, the up time of ring gear
Pin to slowly run and be delivered to main shell, driving moment by freewheel clutch.In order to eliminate the vibration of eccentric generation, in eccentric shaft
Upper installation balance weight, it is ensured that dynamic balancing.
Be applied to few teeth difference reducing gear principle inside electric bicycle hub motor by the utility model, breaches existing
The limitation of sun gear, planet size of wheel and module suffered by planetary speed reduction hub motor, by motor internal slowing-down structure
Size reduction is to ultimate attainment.First, there is no sun gear, only one of which planetary gear and a ring gear, and ring gear and planetary gear
The number of teeth only differs from 3 teeth, i.e., whole reducing gear radial dimension is more somewhat larger than planetary gear, than existing deceleration wheel hub motor
Significantly reduce radial dimension.Secondly, planetary gear differs only 3 teeth (teeth of planetary gear 45, ring gear with the ring gear number of teeth
48 teeth), therefore the number of teeth for engaging simultaneously is more, reaches 8-9 tooth, and also in order that planetary gear and ring gear are only differing 3
Without between cog interference engagement (involute interference, transition interference, tooth top is collided, tooth top is interfered, radial interference) under conditions of individual tooth, will
Ring gear and planetary gear reduction addendum coefficient (1.0 → 0.8) and normal shift are processed, and transverse tooth thickness is increased, so that large carrying capacity
Big to improve, not only module can be down to 1.0, and broken teeth reliability is but improved on the contrary than existing deceleration wheel hub motor.
Embodiment 2
Accompanying drawing 5 is referred to, another preferred scheme of the present utility model is that the ring gear fixes integral with left side main shaft,
The freewheel clutch is cylindrical affixed with main shell, and freewheel clutch inner circle slidably connects power output disk 18, described dynamic
Power output disk is axially arranged with some power output disk pin shaft hole 18-1 along it, and the power output disk pin shaft hole correspondence is inserted
Connect the bearing pin of planetary gear end face, the power output disk pin shaft hole and be 3-8 with the bearing pin quantity of its grafting.This implementation
Example is 8.Planetary gear can be centered on eccentric shaft, revolution motion of the eccentric throw as radius again, while making in ring gear
Rotation, constitutes the deceleration output dynamic structure of negative gearratio.In order to eliminate the vibration of eccentric generation, balance is installed on eccentric shaft
Block, it is ensured that dynamic balancing.
The course of work and principle
In embodiment 2, as illustrated in figs. 5-7, when rotor drives eccentric shaft rotate counterclockwise, because ring gear is affixed with left axle
Maintain static, planetary gear in ring gear centered on eccentric shaft, eccentric throw be revolution-radius make counterclockwise revolution fortune
It is dynamic；Again due to the planetary gear number of teeth 3 teeth fewer than the ring gear number of teeth, make planetary gear while making clockwise low speed certainly
Turn.Now planetary gear low speed rotation speed reducing ratio is：Planetary gear Z1=45, ring gear Z2=48, speed reducing ratio i=-Z1/ (Z2-
Z1)=- 45/ (48-45)=- 15.Gearratio is negative, i.e., main shell direction of rotation is opposite with eccentric shaft direction of rotation.It is affixed
It is inserted into power output disk pin shaft hole in planetary bearing pin, planetary rotation is by power output disk and surpasses
More clutch is delivered to main shell, driving moment.Power output part is power output disk.In order to eliminate shaking for eccentric generation
It is dynamic, balance weight is installed on eccentric shaft, it is ensured that dynamic balancing.
The above-mentioned detailed description carried out to a kind of Minisize electric bicycle wheel hub motor with reference to embodiment, is illustrative
Rather than limited, several embodiments can be included according to limited scope, therefore do not departing from the utility model totality
Changing and modifications under design, should belong within protection domain of the present utility model.
Claims (4)
1. the wheel hub electricity that a kind of Minisize electric bicycle wheel hub motor, including main shaft, stator, rotor, main shell and end cap are constituted
Machine shell, it is characterized in that：The main shaft includes right side main shaft and left side main shaft, and the left side main shaft shape is in three-stage ladder
Axle, the right-hand member of left side main shaft is in flange plate type multi-diameter shaft, and the flange plate type multi-diameter shaft is consolidated with the inner ring of ring gear spring bearing
Connect, the outer ring of the ring gear spring bearing is affixed with ring gear inner circle, the ring gear internal tooth is engaged with planetary gear, described
By Supporting Planetary Gears bearings on eccentric shaft, eccentric shaft supports left side bearing by eccentric shaft in center planetary gear hole
It is supported on the main shaft of right side with eccentric shaft supports right side bearing, right side main shaft constitutes overall main with left side spindle hole grafting
Axle, is connected with eccentric shaft side block bearing, the eccentric shaft outboard end connection on the right side main shaft between left side main shaft and eccentric shaft
There is rotor, the stator is bonded with right side main shaft, the ring gear is cylindrical to slidably connect freewheel clutch, outside freewheel clutch
Circle is affixed with main shell, and hub motor shell is supported on one-piece rotor shaft by endcap support bearing and main shell spring bearing,
The planetary gear end face is uniform and is connected with several bearing pins, axially corresponding along it on the flange plate type multi-diameter shaft of left side main shaft
Bearing pin position is provided with pin shaft hole, in the bearing pin insertion left side main shaft pin shaft hole；Planetary gear can only be with bias in ring gear
Centered on axle, eccentric throw for revolution-radius revolution motion, constitute positive drive than deceleration export dynamic structure.
2. Minisize electric bicycle wheel hub motor according to claim 1, it is characterized in that：The ring gear and left side main shaft
Fixation is integral, and the freewheel clutch is cylindrical affixed with main shell, and freewheel clutch inner circle slidably connects power output circle
Disk, the power output disk is axially arranged with some power output disk pin shaft holes, the power output disk pin shaft hole along it
The bearing pin of correspondence grafting planetary gear end face, planetary gear in ring gear can centered on eccentric shaft, eccentric throw is as radius
Revolution motion, while make rotation again, constitute the deceleration output dynamic structure of negative gearratio.
3. Minisize electric bicycle wheel hub motor according to claim 1 and 2, it is characterized in that：It is affixed on the eccentric shaft
There is balance weight.
4. Minisize electric bicycle wheel hub motor according to claim 1 and 2, it is characterized in that：The pin shaft hole and and its
The bearing pin quantity of grafting is 3-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620697256.7U CN206226201U (en) | 2016-07-05 | 2016-07-05 | Minisize electric bicycle wheel hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620697256.7U CN206226201U (en) | 2016-07-05 | 2016-07-05 | Minisize electric bicycle wheel hub motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206226201U true CN206226201U (en) | 2017-06-06 |
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ID=58780145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620697256.7U Active CN206226201U (en) | 2016-07-05 | 2016-07-05 | Minisize electric bicycle wheel hub motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932822A (en) * | 2016-07-05 | 2016-09-07 | 天津迪思科博科技发展有限公司 | Hub motor of micro electric bicycle |
| CN109209809A (en) * | 2018-09-14 | 2019-01-15 | 上海亿力电器有限公司 | motor pump unit |
| TWI779427B (en) * | 2020-12-17 | 2022-10-01 | 宏國學校財團法人宏國德霖科技大學 | Electric bicycle booster using inner-rotor-type wheel hub motor with a two-stage planetary gear reduction mechanism |
-
2016
- 2016-07-05 CN CN201620697256.7U patent/CN206226201U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932822A (en) * | 2016-07-05 | 2016-09-07 | 天津迪思科博科技发展有限公司 | Hub motor of micro electric bicycle |
| CN109209809A (en) * | 2018-09-14 | 2019-01-15 | 上海亿力电器有限公司 | motor pump unit |
| CN109209809B (en) * | 2018-09-14 | 2024-01-05 | 上海亿力电器有限公司 | Motor pump unit |
| TWI779427B (en) * | 2020-12-17 | 2022-10-01 | 宏國學校財團法人宏國德霖科技大學 | Electric bicycle booster using inner-rotor-type wheel hub motor with a two-stage planetary gear reduction mechanism |
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