CN202847957U - Centrally-arranged driving system of electric bicycle - Google Patents
Centrally-arranged driving system of electric bicycle Download PDFInfo
- Publication number
- CN202847957U CN202847957U CN 201220334074 CN201220334074U CN202847957U CN 202847957 U CN202847957 U CN 202847957U CN 201220334074 CN201220334074 CN 201220334074 CN 201220334074 U CN201220334074 U CN 201220334074U CN 202847957 U CN202847957 U CN 202847957U
- Authority
- CN
- China
- Prior art keywords
- motor
- electrical bicycle
- power
- clutch
- gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The utility model discloses a centrally-arranged driving system of an electric bicycle. The centrally-arranged driving system of the electric bicycle comprises a chain wheel, a motor, a middle shaft and a reduction box, the chain wheel is of a dish-shaped structure, a sunk round installation portion is arranged in the middle of the chain wheel, the reduction box is arranged in the sunk round installation portion and mutually matched with the chain wheel, a reduction mechanism in the reduction box is a combined type double-beyond clutch, the same part is commonly used by an inner ring of an outer clutch and an outer ring of an inner clutch, the same part is used as an output end of a mixed power source, and an inner ring of the outer clutch and the chain wheel are fixed in a coaxial mode. The manner of coaxial installation, coaxial output and single stage bevel wheel parallel transmission is adopted, the phenomenon that a car frame is greatly changed due to suspension installation is successfully avoided, a single stage reduction mechanism is adopted to achieve coaxial output, the size of a motor is effectively reduced, the centrally-arranged driving system of the electric bicycle has little influence on the whole appearance of the electric bicycle, and from the appearance point of a whole bicycle, the bicycle similarity of the electric bicycle is quite high.
Description
Technical field
The present invention relates to the technical field of Electrical Bicycle, is to adopt the coaxial installation of single-point, coaxial output and single stage helical parallel drive between a kind of and vehicle frame specifically, thereby has reduced the mid-drive system of the Electrical Bicycle of drop-gear box and motor volume.
Background technology
At present, domestic Electrical Bicycle recoverable amount surpasses 1.6 hundred million, becomes genuine first vehicle.Domestic existing Electrical Bicycle almost all is the In-wheel motor driving form.Wheel hub motor is divided into again wheel hub and directly drives form and deceleration form, and the wheel hub form of directly driving is installed on the electrical salf-walking back wheels of vehicle substantially, and the type motor weight is large, volume is large, and electromagnetic noise is large, and riding resistance is large, owing to adopted a large amount of magnetic materials, manufacturing cost is higher.For solving the problems such as wheel hub direct driving motor volume is large, noise is large, riding resistance is large, wheel hub motor with built-in deceleration has appearred on the market, this motor generally adopts the planetary gear speed-reduction form, promote thereby motor speed is compared to some extent than wheel hub motor, the motor volume under the Same Efficieney reduces to some extent like this.The type wheel hub motor generally adopts the fractional-slot designing technique, and reluctance torque is directly driven to compare greatly with wheel hub and reduced, but still has reluctance torque to exist, and when manpower is ridden, still has certain riding resistance.The wheel hub motor of this form is mainly used in the Electrical Bicycle take lithium cell as the energy.The Electrical Bicycle of the bicycle money of present domestic export trade almost adopts the type motor.
Although the wheel hub motor of Electrical Bicycle has obtained using very widely in the prior art, it still has shortcoming to solve.
For the reason of protection battery of electric bicycle, controller can limit the battery outgoing current, and the general cut-off current of 36V lithium cell is about 12-14A.Take the wheel hub motor of equipped 700C outlet vehicle as example, when cut-off current was 14A, motor output torque was no more than 20Nm, and electricity drives hill climbing ability and is no more than 3 °.And it is bad to adopt wheel hub motor can cause complete vehicle weight to distribute, and the most rational center of gravity of bicycle should place the axis place, and wheel hub motor is installed in front-wheel or trailing wheel center usually, and is unfavorable to the distribution of weight of bicycle car load.Because wheel hub motor places vehicle wheel shaft place, so except bearing propulsive effort, bear simultaneously the load of car load and institute's load capacity, therefore require higher to the strength and stiffness of hub motor shell.
When wheel hub motor placed the front-wheel position, propulsive effort played a pulling force effect by front fork to car load, when suddenly rapidly or when turning, the front fork stressing conditions is disliked slightly very much, is easy to cause the front fork fracture, thereby the bicyclist is damaged.The distance of general distance controller was distant when wheel hub motor was installed at car load, considered the disguise of cabling in addition, and the motor down-lead length of wheel hub motor often surpasses 1 meter, have in addition surpass 1.5 meters, long lead-in wire causes very serious loss.
And electric bicycle actuation techniques actv. has solved the above shortcoming of wheel hub motor.Mid-driving can change the transmitting ratio between built-in motor and the trailing wheel by the mode of change-speed box being installed at bicycle rear, and actv. solves the problem of wheel hub motor hill climbing ability deficiency.The mid-drive system of the patented product is in the situation of 14A current limliting, and behind the equipped outer change-speed box, bicycle rear can be exported the 40Nm torque, and hill climbing ability is above 6 °.Because built-in motor places shaft position, just in time places the most rational center-of-gravity position of bicycle place, and is favourable to the bicycle distribution of weight.The built-in motor shell does not carry gravity, has kept the most original drive mechanism of bicycle.By the chain transmission, so the realizable force transmission is the potential safety hazard that does not exist the hub motor shell load capacity to bring between built-in motor clutch end and the bicycle rear.Distance between built-in motor and the controller is very near, and motor down-lead can be very short, compares with wheel hub motor, significantly reduced watt loss on the line.
The electric bicycle drive system mainly is divided into following several: from the driver output formal classification, mid-drive system is divided into coaxial output, small trochal disc output and double-wheel-disc output; From installation form, the mid-drive system on the domestic and international market all adopts lift-on/lift-off type to install at present.
Coaxial output, associative perception is strong, and electronic and manpower adopts same hinge wheel, has kept the initial drive mechanism of bicycle.But this inside configuration design is complicated, and this structure often adopts the multi-stage speed-reducing form.Small trochal disc drives, and electronic and manpower drives by a public small trochal disc output.Small trochal disc output separates (decentraction) with axis, manpower drives (axis) and is connected with small trochal disc with check configuration by speed changing structure.This complex structural designs adopts the multi-stage speed-reducing form substantially.Double-wheel-disc drives.Electronic and manpower is exported by chain of two wheel discs respectively, and motorized motions has small trochal disc output, and manpower drives (axis) and connects by check configuration territory big trochal disc.This form drive configuration is simple, can adopt primary speed-down, but owing to increased by two sprocket wheels, higher at the installation requirement of car load to motor, chain noise appears easily.
Lift-on/lift-off type is installed and is similar to the motor cycle engine installation, and mid-drive system is lifted on the cycle frame.This form is installed very large to the change of cycle frame, and after installing according to this mode, deviation ratio is larger between Electrical Bicycle and the bicycle original appearance.But the mid-Driving Scheme difficulty of this structure is relatively low.
In above-mentioned driver output form, coaxially be output as the most rational power export structure, but at present in the like product of domestic and international market, deceleration system is multi-stage speed-reducing or satellite gear slows down, this deceleration system complex structure, the deceleration body is bulky, and is very large to the bicycle appearance effects.And the lift-on/lift-off type mounting means is strict to Vehicle Frame Design and mounting process, and outward appearance was to very large this factor of bicycle appearance effects, so that lift-on/lift-off type can not be ignored the impact that bicycle unit design and manufacturing bring after it was installed in addition.
Summary of the invention
The technical problem to be solved in the present invention provides and adopts the coaxial installation of single-point, coaxial output and single stage helical parallel drive between a kind of and vehicle frame, thereby has reduced the mid-drive system of the Electrical Bicycle of drop-gear box and motor volume.
The technical scheme that the present invention takes for the technical matters that exists in the solution known technology is:
The mid-drive system of Electrical Bicycle of the present invention comprises: sprocket wheel, as the power intake of Electrical Bicycle, send power to the trailing wheel of Electrical Bicycle by the chain that matches with sprocket wheel, and drive Electrical Bicycle and advance; Motor, by the power drives motor rotation, advancing for Electrical Bicycle provides power; Axis passes above-mentioned sprocket wheel, and with the sprocket coaxiality setting, axis is connected with the foot-operated of Electrical Bicycle by the bent axle that both sides arrange respectively, the cyclist rotates by the foot-operated axis that drives, advancing for Electrical Bicycle provides power; Drop-gear box, comprise reduction box casing and the speed reduction gearing that is arranged on reduction box casing inside, speed reduction gearing is in transmission connection motor and axis respectively with sprocket wheel, and with the power transmission of motor and axis input to sprocket wheel, above-mentioned sprocket wheel is saucer-like configuration, at the midway location of sprocket wheel the circular mounting section of depression is set, reduction box casing is arranged in the installation portion of depression and with sprocket wheel and cooperatively interacts; Speed reduction gearing in the drop-gear box is the two overriding clutchs of combined type, the two overriding clutchs of above-mentioned combined type are made of outer power-transfer clutch and internal clutch, its China and foreign countries clutch pack draw together outer clutch outer, the outer power-transfer clutch inner ring of coaxial setting and be arranged on outer clutch outer and outer power-transfer clutch inner ring between the wedging part, motor by gear pair with power transmission to outer clutch outer, and internal clutch comprises outer power-transfer clutch inner ring, the axis of coaxial setting and be arranged on wedging part between outer power-transfer clutch inner ring and the axis; Outer power-transfer clutch inner ring consists of clutch end, and fixes with sprocket coaxiality, between the inwall of power-transfer clutch inner ring and reducer shell bearing is set outside.
The present invention can also be by the following technical solutions:
The opposition side that described reduction box casing cooperates with sprocket wheel arranges outstanding tubular fixed part, the two overrunning clutch coaxial settings of tubular fixed part and combined type, axis passes from the tubular fixed part, and cooperatively interacts by bearing between axis and the tubular fixed part inwall.
The front end of above-mentioned tubular fixed part arranges screw thread, Five-way tube position at electric bicycle fame arranges fixedly endoporus, tubular fixed part on the reduction box casing is inserted and is passed from its opposite side by a side of fixing endoporus, have the spiral locknut of negative thread and the front end of tubular fixed part and be fixed, and reduction box casing and cycle frame are locked.
Described motor and reduction box casing interfix, and the output shaft of motor and the central axis direction of Electrical Bicycle are parallel to each other.
The gear pair that arranges between described motor and the outer clutch outer is the cylindric spiral gear of parallel drive, comprise gear with little teeth number and big gear wheel, gear with little teeth number is coaxial fixing with the output shaft of motor, by motor-driven rotation, interference fit between outer clutch outer and the big gear wheel.
The number of teeth of described gear with little teeth number is 1～4; The maximum deceleration of said gear pair is than being 30:1.
Advantage and good effect that the present invention has are:
In the mid-drive system of Electrical Bicycle of the present invention, adopt coaxial installation, coaxial output, single stage helical parallel drive mode, successfully having avoided lift-on/lift-off type that the vehicle frame that brings is installed significantly changes, adopt single-stage speed reducing mechanism to realize coaxial output, effectively reduce motor volume, in the technical field of electric bicycle motor, adopt first single-stage speed reducing to realize the big retarding ratio, by the large speed ratio ways of deceleration, so that motor self working speed rises, effectively reduced motor volume.It is excessive and motor installation difficulty that cause reaches greatly the inaesthetic problem of profile that single stage helical parallel drive mode efficiently solves in the satellite gear deceleration system motor external diameter.The present invention is inboard with the installation portion that drop-gear box is hidden in dish shape sprocket wheel depression, and is very little on the impact of bicycle overall appearance, from car load outward appearance angle, very high with the similarity of bicycle.The mid-drive system of Electrical Bicycle of the present invention and the fixed form of electric bicycle fame do not change the positional structure of bicycle five-pipe fully, adopt endoporus to be set on the Five-way tube fixedly to install, to the intensity of cycle frame without any adverse effect.
Description of drawings
Fig. 1 is the cutaway view of the mid-drive system of Electrical Bicycle of the present invention;
Fig. 2 is the part sectional view of the two overriding clutchs of combined type in the mid-drive system of Electrical Bicycle of the present invention;
Fig. 3 is the lateral plan of the mid-drive system middle sprocket of Electrical Bicycle of the present invention;
Fig. 4 is the mid-drive system of Electrical Bicycle of the present invention and the electric bicycle fame birds-eye view when fixing.
The specific embodiment
The present invention will be described in detail referring to drawings and Examples.
Fig. 1 is the cutaway view of the mid-drive system of Electrical Bicycle of the present invention; Fig. 2 is the part sectional view of the two overriding clutchs of combined type in the mid-drive system of Electrical Bicycle of the present invention; Fig. 3 is the lateral plan of the mid-drive system middle sprocket of Electrical Bicycle of the present invention; Fig. 4 is the mid-drive system of Electrical Bicycle of the present invention and the electric bicycle fame birds-eye view when fixing.
As shown in Figures 1 to 4, the mid-drive system of Electrical Bicycle of the present invention comprises: sprocket wheel 3, as the power intake of Electrical Bicycle, send power to the trailing wheel of Electrical Bicycle by the chain that matches with sprocket wheel, and drive Electrical Bicycle and advance; Motor 9, by the power drives motor rotation, advancing for Electrical Bicycle provides power; Axis 7 passes above-mentioned sprocket wheel 3, and with sprocket wheel 3 coaxial settings, axis 7 is connected with the foot-operated of Electrical Bicycle by the bent axle that both sides arrange respectively, the cyclist rotates by the foot-operated axis that drives, advancing for Electrical Bicycle provides power; Drop-gear box, comprise reduction box casing 4 and the speed reduction gearing that is arranged on reduction box casing inside, speed reduction gearing is in transmission connection motor and axis respectively with sprocket wheel, and with the power transmission of motor and axis input to sprocket wheel, above-mentioned sprocket wheel 3 is saucer-like configuration, at the midway location of sprocket wheel 3 the circular mounting section of depression is set, and reduction box casing 4 is arranged in the installation portion of depression and with sprocket wheel and cooperatively interacts, by sprocket wheel reduction box casing is provided and to cover, make the outward appearance of this position more attractive in appearance; Speed reduction gearing in the drop-gear box is the two overriding clutchs of combined type, the two overriding clutchs of above-mentioned combined type are made of outer power-transfer clutch and internal clutch, its China and foreign countries clutch pack draw together outer clutch outer 5, the outer power-transfer clutch inner ring 6 of coaxial setting and be arranged on outer clutch outer and outer power-transfer clutch inner ring between wedging part 8, motor by gear pair with power transmission to outer clutch outer 5, and internal clutch comprises outer power-transfer clutch inner ring 6, the axis 7 of coaxial setting and be arranged on wedging part 8 between outer power-transfer clutch inner ring and the axis; Outer power-transfer clutch inner ring consists of clutch end, and fixes with sprocket coaxiality, and bearing 12 is set between the inwall of power-transfer clutch inner ring and reducer shell outside.
Driven by power and manpower drive simultaneously and are in transmission connection by the two overriding clutchs of combined type and sprocket wheel, because manpower drives and driven by power finally all is pooled to sprocket wheel, for these two propulsions source effectively merge, the present invention has structurally designed the two overriding clutchs of combined type, inside and outside two power-transfer clutchs are effectively combined, be that internal clutch outer ring and outer power-transfer clutch inner ring are a part, for reducing internal clutch inner ring gear, utilize bicycle middle shaft to use as the internal clutch inner ring, reduce to greatest extent system bulk.Outer power-transfer clutch is used for driven by power output, and the wedging part 8 between outer clutch outer and the outer power-transfer clutch inner ring can adopt voussoir or roller.Simultaneously, outer power-transfer clutch inner ring 6 and axis have formed internal clutch, and namely outer power-transfer clutch inner ring is born the effect of internal clutch outer ring, and axis is as the internal clutch inner ring, and internal clutch drives power output with manpower.Wedging part 9 between outer power-transfer clutch inner ring and the axis can adopt voussoir or roller.The present invention is compact, effectively two mono-directional overrun clutchs are grouped together, and outer power-transfer clutch inner ring and internal clutch outer ring are that same parts share, as the mouth of hybrid power source.Axis 7 directly as the internal clutch inner ring, has reduced the structure of internal clutch as the manpower drive element of riding effectively.
The opposition side that described reduction box casing cooperates with sprocket wheel arranges outstanding tubular fixed part 13, the two overrunning clutch coaxial settings of tubular fixed part and combined type, axis passes from the tubular fixed part, and cooperatively interacts by bearing between axis and the tubular fixed part inwall.
The front end of above-mentioned tubular fixed part arranges screw thread, Five-way tube position at electric bicycle fame 11 arranges fixedly endoporus, tubular fixed part 13 on the reduction box casing is inserted and is passed from its opposite side by a side of fixing endoporus, have the spiral locknut 10 of negative thread and the front end of tubular fixed part and be fixed, and reduction box casing and cycle frame are locked.
Adopt single-point to be connected between the mid-drive system of Electrical Bicycle of the present invention and the cycle frame, this mounting means can easily be realized the location of this motor on the axis axial direction, and mounting means is very simple.And like product all adopts lift-on/lift-off type on the domestic and international market, and this mounting means needs 3 fixed installations at least.
Motor and reduction box casing interfix, and the output shaft of motor and the central axis direction of Electrical Bicycle are parallel to each other.
The gear pair that arranges between motor and the outer clutch outer is the cylindric spiral gear of parallel drive, comprise gear with little teeth number and big gear wheel, gear with little teeth number is coaxial fixing with the output shaft of motor, by motor-driven rotation, interference fit between outer clutch outer 5 and the big gear wheel 2.
The number of teeth of gear with little teeth number is 1～4; The maximum deceleration of said gear pair is than being 30:1.The present invention has adopted few number of teeth, large speed ratio, single-stage speed reducing, parallel drive cylindric spiral gear slowing-down structure, and this slowing-down structure makes Design of Transmission System very compact, and taking up room minimizes.At present in the similar products at home and abroad, coaxial output built-in motor is the multi-stage speed-reducing system, the present invention uses the transmission of gear with few teeth to realize single-stage speed reducing, the number of teeth of gear with little teeth number 1 can be 1,2,3,4 tooth in the gear pair, and the number of teeth of big gear wheel 2 is 30 times of the gear with little teeth number number of teeth to the maximum, be that gear with little teeth number can adopt monodentate, and the number of teeth of big gear wheel can be 30 teeth simultaneously, and this adopts single-stage speed reducing to realize so large reduction ratio in the technical field of electric bicycle motor first.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, although the present invention with preferred embodiment openly as above, yet, be not to limit the present invention, any those skilled in the art, within not breaking away from the technical solution of the present invention scope, certainly can utilize the technology contents of announcement to make a little change or modification, become the equivalent embodiment of equivalent variations, be the content that does not break away from technical solution of the present invention in every case, any simple modification that foundation technical spirit of the present invention is done above embodiment, equivalent variations and modification all belong in the scope of technical solution of the present invention.
Claims (6)
1. the mid-drive system of an Electrical Bicycle comprises: sprocket wheel, as the power intake of Electrical Bicycle, send power to the trailing wheel of Electrical Bicycle by the chain that matches with sprocket wheel, and drive Electrical Bicycle and advance; Motor, by the power drives motor rotation, advancing for Electrical Bicycle provides power; Axis passes above-mentioned sprocket wheel, and with the sprocket coaxiality setting, axis is connected with the foot-operated of Electrical Bicycle by the bent axle that both sides arrange respectively, the cyclist rotates by the foot-operated axis that drives, advancing for Electrical Bicycle provides power; Drop-gear box, comprise reduction box casing and the speed reduction gearing that is arranged on reduction box casing inside, speed reduction gearing is in transmission connection motor and axis respectively with sprocket wheel, and with the power transmission of motor and axis input to sprocket wheel, it is characterized in that: above-mentioned sprocket wheel is saucer-like configuration, at the midway location of sprocket wheel the circular mounting section of depression is set, reduction box casing is arranged in the installation portion of depression and with sprocket wheel and cooperatively interacts; Speed reduction gearing in the drop-gear box is the two overriding clutchs of combined type, the two overriding clutchs of above-mentioned combined type are made of outer power-transfer clutch and internal clutch, its China and foreign countries clutch pack draw together outer clutch outer, the outer power-transfer clutch inner ring of coaxial setting and be arranged on outer clutch outer and outer power-transfer clutch inner ring between the wedging part, motor by gear pair with power transmission to outer clutch outer, and internal clutch comprises outer power-transfer clutch inner ring, the axis of coaxial setting and be arranged on wedging part between outer power-transfer clutch inner ring and the axis; Outer power-transfer clutch inner ring consists of clutch end, and fixes with sprocket coaxiality, between the inwall of power-transfer clutch inner ring and reducer shell bearing is set outside.
2. the mid-drive system of Electrical Bicycle according to claim 1, it is characterized in that: the opposition side that reduction box casing cooperates with sprocket wheel arranges outstanding tubular fixed part, the two overrunning clutch coaxial settings of tubular fixed part and combined type, axis passes from the tubular fixed part, and cooperatively interacts by bearing between axis and the tubular fixed part inwall.
3. the mid-drive system of Electrical Bicycle according to claim 2, it is characterized in that: the front end of above-mentioned tubular fixed part arranges screw thread, Five-way tube position at electric bicycle fame arranges fixedly endoporus, tubular fixed part on the reduction box casing is inserted and is passed from its opposite side by a side of fixing endoporus, have the spiral locknut of negative thread and the front end of tubular fixed part and be fixed, and reduction box casing and cycle frame are locked.
4. the mid-drive system of Electrical Bicycle according to claim 3, it is characterized in that: motor and reduction box casing interfix, and the output shaft of motor and the central axis direction of Electrical Bicycle are parallel to each other.
5. the mid-drive system of Electrical Bicycle according to claim 4, it is characterized in that: the gear pair that arranges between motor and the outer clutch outer is the cylindric spiral gear of parallel drive, comprise gear with little teeth number and big gear wheel, gear with little teeth number is coaxial fixing with the output shaft of motor, by motor-driven rotation, interference fit between outer clutch outer and the big gear wheel.
6. the mid-drive system of Electrical Bicycle according to claim 5, it is characterized in that: the number of teeth of gear with little teeth number is 1～4; The maximum deceleration of said gear pair is than being 30:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220334074 CN202847957U (en) | 2012-07-11 | 2012-07-11 | Centrally-arranged driving system of electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220334074 CN202847957U (en) | 2012-07-11 | 2012-07-11 | Centrally-arranged driving system of electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202847957U true CN202847957U (en) | 2013-04-03 |
Family
ID=47979181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220334074 Expired - Fee Related CN202847957U (en) | 2012-07-11 | 2012-07-11 | Centrally-arranged driving system of electric bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202847957U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745298A (en) * | 2012-07-11 | 2012-10-24 | 天津比沃科技有限公司 | Centrally-mounted drive system of electric bicycle |
| IT201900008541A1 (en) * | 2019-06-10 | 2020-12-10 | Rmu Project S R L | ELECTRIC GEARMOTOR UNIT FOR BICYCLES |
| US12134442B2 (en) | 2019-06-10 | 2024-11-05 | Rmu Project S.R.L. | Electric gearmotor assembly for bicycles |
-
2012
- 2012-07-11 CN CN 201220334074 patent/CN202847957U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102745298A (en) * | 2012-07-11 | 2012-10-24 | 天津比沃科技有限公司 | Centrally-mounted drive system of electric bicycle |
| CN102745298B (en) * | 2012-07-11 | 2015-04-22 | 天津比沃科技有限公司 | Centrally-mounted drive system of electric bicycle |
| IT201900008541A1 (en) * | 2019-06-10 | 2020-12-10 | Rmu Project S R L | ELECTRIC GEARMOTOR UNIT FOR BICYCLES |
| WO2020250049A1 (en) * | 2019-06-10 | 2020-12-17 | Rmu Project S.R.L. | Electric gearmotor assembly for bicycles |
| JP2022539973A (en) * | 2019-06-10 | 2022-09-14 | エッレエンメウー プロジェクト ソチエタ ア リスポンサビリタ リミタータ | bicycle electric gear motor assembly |
| US12134442B2 (en) | 2019-06-10 | 2024-11-05 | Rmu Project S.R.L. | Electric gearmotor assembly for bicycles |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102745298B (en) | Centrally-mounted drive system of electric bicycle | |
| CN106864251B (en) | Wheel motor drive device | |
| CN101602326A (en) | A kind of differential retarder | |
| CN204858870U (en) | Planetary gear reducer integration motor | |
| WO2010051681A1 (en) | Center motor driving device for electrical bicycle | |
| CN204794539U (en) | Electric bicycle puts motor in with variable speed reducing ratio | |
| CN105006912A (en) | Planetary gear deceleration integrated motor | |
| WO2012027870A1 (en) | Permanent magnet electric hub withou iron core | |
| CN202847957U (en) | Centrally-arranged driving system of electric bicycle | |
| CN105375683B (en) | Ultrathin wheel shaft type wheel hub motor | |
| CN202384906U (en) | Integrated built-in motor of speed change motor wheel disk in electric bicycle | |
| CN208855328U (en) | Drive axle and vehicle | |
| CN205554501U (en) | In put motor bicycle | |
| CN204055356U (en) | The electric differential drive axle of planetary gear construction | |
| CN207015144U (en) | A kind of electric car direct-driving type power rear-axle | |
| CN103001389B (en) | The automobile-used built-in motor of electrical salf-walking | |
| CN102167126A (en) | Power generation type electric-motor-assisted dual-purpose bicycle | |
| CN201533211U (en) | Bridge cylinder integrated reducing motor | |
| CN202602457U (en) | A brushless in-wheel motor with a built-in rotor | |
| CN202455213U (en) | Hub-type reducing motor of electric bicycle with small wheel diameter | |
| CN208423972U (en) | A kind of outer rotor and its hub motor | |
| CN202062998U (en) | Integrated single-oblique-arm deceleration type rear-wheel hub electric--driving automobile power system | |
| CN106043590A (en) | Acceleration and deceleration device and electric power-assisted bicycle | |
| CN205905759U (en) | Insert electric formula hybrid power system | |
| CN206841656U (en) | Wheel hub motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20130711 |