CN206664846U - Electric bicycle transmission device and the electric bicycle for configuring the device - Google Patents
Electric bicycle transmission device and the electric bicycle for configuring the device Download PDFInfo
- Publication number
- CN206664846U CN206664846U CN201720430016.5U CN201720430016U CN206664846U CN 206664846 U CN206664846 U CN 206664846U CN 201720430016 U CN201720430016 U CN 201720430016U CN 206664846 U CN206664846 U CN 206664846U
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- axis
- driver
- electric bicycle
- angular wheel
- ring
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 35
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 230000004044 response Effects 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 208000012260 Accidental injury Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Motorcycle And Bicycle Frame (AREA)
Abstract
This application discloses a kind of electric bicycle transmission device, including：Axis, the sealing ring for being sequentially distributed and being movably set in outside the axis along the axis direction from-inner-to-outer of axis, back-up ring, Hall subassembly and locking end cap；Locking end cap is locked with preceding driving outer casing screw, so as to which sealing ring, back-up ring, Hall subassembly are pressed abd fixed between locking end cap and preceding cover of driver；Velocity response magnet steel corresponding with the Hall subassembly is fixedly installed on the axis.The application is applied widely, can either ensure axis and the stable stable drive of vehicle rear wheel, turn avoid traditional chain driving device and is easily broken off damaging when in use, accidentally injures user, is stained user's clothing, it is necessary to the problem of often safeguarding.
Description
Technical field
The application is related to a kind of electrical salf-walking field, and in particular to a kind of electric bicycle transmission device and the configuration device
Electric bicycle.
Background technology
The transmission device of existing electric bicycle is chain driving, for example carries the electrical salf-walking of rear-guard wheel hub motor
Car, it is connected between its axis and rear-guard wheel hub motor by chain (and sprocket wheel), the both ends connecting crank of axis, crank end
Portion's connection is foot-operated.In practical application, under electric model, rear-guard wheel hub electrical power runs and directly drives rear wheel, makes
Vehicle forward；Under manpower ride mode, bicyclist tramples foot-operated, and is passing through chain by crank handle turns middle shaft rotation, axis
The shell of wheel hub motor is driven to rotate, motor housing drives bicycle rear to rotate and make vehicle forward.
Above-mentioned this chain driving device has the following disadvantages：Driving chain easy fracture damages, and easily accidental injury makes
User, while user's clothing is easily stained, and need often to safeguard.
The content of the invention
The purpose of the application is：In order to overcome above mentioned problem, there is provided a kind of more compact electric bicycle transmission dress of structure
Put and configure the electric bicycle of the device.
The technical scheme of the application is：A kind of electric bicycle transmission device, the song for the electric bicycle that is connected
Handle and rear-guard wheel hub motor, it includes：
The axis that on vehicle frame and both ends are used to connect the crank is pivotally connected to,
The first angular wheel being coaxially fixed on the axis,
For connecting the second angular wheel of the rear-guard wheel hub motor,
The triconic gear of connection is engaged with first angular wheel,
The 4th angular wheel of connection is engaged with second angular wheel,
The power transmission shaft being fixedly connected between the triconic gear and the 4th angular wheel, and the transmission
Axle, the triconic gear and the 4th angular wheel are coaxially arranged, and
The axle sleeve being connected on the vehicle frame, the power transmission shaft is by spring bearing rotary setting in the axle sleeve；
The axle sleeve by from the preceding preceding cover of driver being then detachably connected successively, preceding connecting seat, sleeve pipe, rear connecting seat and
Cover of driver is formed afterwards, and the preceding cover of driver and the rear cover of driver are fixed with the vehicle frame；
After the vehicle frame includes chain stay, the Five-way tube for being connected to the chain stay front portion and is connected to the chain stay rear portion
Hook, the preceding cover of driver are arranged in the Five-way tube and are locked, and the axis is rotated by axis spring bearing
It is assemblied in the preceding cover of driver；
Also include being sequentially distributed and being movably set in outside the axis along the axis direction from-inner-to-outer of the axis
Sealing ring, back-up ring, Hall subassembly and locking end cap；The locking end cap is locked with preceding driving outer casing screw, so that will
The sealing ring, back-up ring, Hall subassembly are pressed abd fixed between locking end cap and preceding cover of driver；It is fixedly installed on the axis
Velocity response magnet steel corresponding with the Hall subassembly.
The application is on the basis of above-mentioned technical proposal, in addition to following preferred scheme：
The back-up ring is connected with the preceding driving outer casing screw, so as to which the sealing ring is pressed abd fixed on into the back-up ring with before
Between cover of driver.
The Hall subassembly is fixed with the back-up ring circumference inlay card.
The axial side of second angular wheel, which is formed with, to be extended axially inwardly and with being fixed on the rear-guard wheel hub motor
Motor housing on the flower-drum sleeve joint hole that matches of flower-drum.
Cover of driver is provided with spring bearing with second angular wheel after described.
Described sleeve pipe is set by the external screw thread set on the outer tube wall of sleeve pipe front end and in preceding connecting seat with the preceding connecting seat
The internal thread threaded connection put, described sleeve pipe with it is described after connecting seat by the external screw thread that is set on the outer tube wall of sleeve pipe rear end and after
The internal thread threaded connection set in connecting seat, and external screw thread and described sleeve pipe in described sleeve pipe on the front end outer tube wall
External screw thread on the upper rear end outer tube wall is oppositely oriented.
This electric bicycle that the application is proposed, including vehicle frame, include the electric bicycle transmission of said structure
Device.
The advantages of the application is：
1st, the application sets the shaft drive without chain to connect the axis of electric vehicle and bicycle on electric bicycle
With rear-guard wheel hub motor, and shaft speed sensor in dexterously being set at axis, in by sensing in a manner of rotating speed come
The power output of controlled motor, so that bicyclist can adjust the power output of motor by trampling crank.
2nd, the axial side of the second angular wheel is formed with the flower-drum sleeve joint hole extended axially inwardly, and flower-drum connecting hole is circumferentially solid
Surely it is socketed in outside the flower-drum that rear-guard wheel hub motor carries, so realizes the connection of the second angular wheel and rear-guard wheel hub motor.
The structure snd size that flower-drum sleeve joint hole and the in the market set on second angular wheel sells flower-drum match completely, so that the biography
Dynamic device is applied to connect various rear-guard wheel hub motors, substantially increases its scope of application.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the embodiment of the present application, required use in being described below to embodiment
Accompanying drawing be briefly described, drawings in the following description are only some embodiments of the present application, for the common skill in this area
For art personnel, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of electric bicycle transmission device in the embodiment of the present application；
Fig. 2 is Fig. 1 partial enlarged drawing；
Wherein：1- vehicle frames, 101- chain stays, 102- Five-way tubes, hook after 103-, 2- axis, 3- rear-guard wheel hub motors, 301-
Electric machine main shaft, 302- motor housings, 303- flower-drum, the angular wheels of 4- first, the angular wheels of 5- second, 501- flower-drum sleeve joint holes,
6- triconic gears, the angular wheels of 7- the 4th, 8- power transmission shafts, 9- spring bearings, cover of driver before 10-, connecting seat before 11-,
12- sleeve pipes, connecting seat after 13-, cover of driver after 14-, 15- axis spring bearings, 16- sealing rings, 17- back-up rings, 18- Hall groups
Part, 19- locking end caps, 20- velocity response magnet steel.
Embodiment
Such scheme is described further below in conjunction with specific embodiment.It should be understood that these embodiments are to be used to illustrate
The application and be not limited to limit scope of the present application.The implementation condition used in embodiment can be done according to the condition of specific producer
Further adjustment, unreceipted implementation condition is usually the condition in normal experiment.
Figures 1 and 2 show that a specific embodiment of this electric bicycle transmission device of the application, the transmission device
For connecting the crank and rear-guard wheel hub motor 3 of electric bicycle, to enable bicyclist to turn by trampling pedal drive crank
Move, and then the rotation of crank is passed to the motor casing of rear-guard wheel hub motor 3, and then after the bicycle of drive and motor casing fixation
Wheel rotates, and bicycle is moved ahead.
In Fig. 1, the rear-guard wheel hub motor 3 is that usually used rear-guard wheel hub motor is no different, and it includes：Outside motor
Shell 302, the electric machine main shaft 301 for being arranged in motor housing and being fixed on vehicle frame 1 is rotated, and rotation is set in electric machine main shaft
The flower-drum 303 being connected outside 301 and with motor housing 302.Motor housing 302 is by being close to the shell being connected together by bolt lock
Body 302a and end cap 302b is formed, and the core section of motor is in motor housing 302.Flower-drum 303 has one-way clutch function,
And flower-drum 303 can commercially be bought and be assembled on motor, it is standard component.Wherein motor housing 302 and bicycle rear
It is fixed, and the in most cases motor housing typically directly wheel hub as trailing wheel.
It should be noted that in conventional chain driving structure, sprocket wheel after would generally being connected on above-mentioned flower-drum 303,
The rear sprocket wheel is connected with the preceding chain wheel being fixed on bicycle middle shaft by chain, and bicyclist's forward direction is trampled pedal drive crank and turned
After dynamic, pass sequentially through preceding chain wheel, chain, flower-drum, motor housing and drive bicycle rear to rotate, bicycle is moved ahead.And ride
When person reversely tramples crank, flower-drum is in released state, and motor housing will not be acted on by twisting resistance.
Scheme identical with being designed before the applicant is that the transmission device also includes：Axis 2, the first angular wheel
4th, the second angular wheel 5, the second angular wheel 5, the second angular wheel 5 and power transmission shaft 8.Wherein：
Axis 2 is rotatably connected and (is indirectly connected with by intermediate member, indirect connection) on the vehicle frame 1 of electric bicycle.
During practical application, the both ends connecting crank of axis 2, crank end sets foot-operated.Rear-guard wheel hub motor 3 is arranged on vehicle frame 1, and
And it is located at the rear of axis 2.
First angular wheel 4 is coaxially fixed on axis 2, and the two can be split-type structural, can also be made of one formula knot
Structure.
Second angular wheel 5 is coaxially set in outside electric machine main shaft 301 and can rotated around electric machine main shaft 301, and
Second angular wheel 5 is connected with rear-guard wheel hub motor 3.
Triconic gear 6 engages connection with the first angular wheel 4, and the 4th angular wheel 7 is nibbled with the second angular wheel 5
Close connection.
Power transmission shaft 8 is fixedly connected between the angular wheel 7 of triconic gear 6 and the 4th, and power transmission shaft 8 and third hand tap
The angular wheel 7 of shape gear 6 and the 4th is coaxially arranged, i.e., three is coaxially arranged and interfixes.
The key improvements of the present embodiment are, the connected mode of second angular wheel 5 and the rear-guard wheel hub motor 3
For：The axial side of second angular wheel 5 be formed with extend axially inwardly flower-drum sleeve joint hole 501 (its aperture be electric machine main shaft it is straight
The several times in footpath), the flower-drum connecting hole 501 is socketed in outside flower-drum 303 circumferentially fixedly.In this way, using carrying on motor housing
Flower-drum realizes that the second angular wheel 5 connects with the one-way locking of motor housing, without it is extra set special construction it is unidirectional from
Clutch.
, only need to be according to the structure snd size for the standard component flower-drum that in the market is sold, to design flower when manufacturing the transmission device
The structure snd size of drum sleeve joint hole 501, make and match completely.This makes it possible to make it that it is various that the transmission device is applied to connection
Rear-guard wheel hub motor, substantially increase its scope of application.
During practical application, in the both ends connecting crank of axis 2, and foot-operated, the motor of rear-guard wheel hub motor 3 is installed on crank
Shell (wheel hub as vehicle rear wheel) is coaxially connected with vehicle rear wheel.Bicyclist's forward direction trample it is foot-operated and by crank handle turns
Axle 2 rotates, and axis 2 passes sequentially through above-mentioned first angular wheel 4, triconic gear 6, power transmission shaft 8, the 4th angular wheel 7 again
Transmission with the second angular wheel 5 drives flower-drum 303 to rotate, and now flower-drum 303 is in locking state, and its drive motor shell turns
It is dynamic, enter but bicycle rear rotates, realize that bicycle moves ahead.And under electric model, rear-guard wheel hub motor 3 be powered operation and
Rotated by movement drive motor shell around electric machine main shaft, now flower-drum 303 is in releasing orientation, can't drive the second taper
Gear 5 and axis 2 rotate.
In order to ensure the structural stability of above-mentioned no chain drive, while avoid power transmission shaft 8 directly exposed in environment
In potential safety hazard be present, the present embodiment is also provided with the axle sleeve being connected on vehicle frame 1, and power transmission shaft 8 is set by the rotation of spring bearing 9
It is placed in the axle sleeve.
In the present embodiment, above-mentioned axle sleeve is not a monolithic construction, but by being then detachably connected successively from preceding
Preceding cover of driver 10, preceding connecting seat 11, sleeve pipe 12, rear connecting seat 13 and rear cover of driver 14 are formed, wherein, preceding cover of driver 10
Fixed with rear cover of driver 14 with vehicle frame 1, and institute is separated between preceding connecting seat 11, sleeve pipe 12 and rear connecting seat 13 and vehicle frame 1
Preceding cover of driver 10 and rear cover of driver 14 are stated, preceding connecting seat 11, sleeve pipe 12 and rear connecting seat 13 are not directly connected with vehicle frame 1.
The axle sleeve uses this split interconnection system structure, primarily to the assembling without each parts on chain drive.
Further, the detachable connection between above-mentioned preceding connecting seat 11, sleeve pipe 12 and rear connecting seat 13 is screw thread
Connection, specifically：Sleeve pipe 12 and preceding connecting seat 11 are by the external screw thread on the front end outer tube wall of sleeve pipe 12 and before being located at
What the screw-internal thread fit in connecting seat 11 connected, sleeve pipe 12 passes through outer on the rear end outer tube wall of sleeve pipe 12 with rear connecting seat 13
Screw thread connects with the screw-internal thread fit in rear connecting seat 13.Also, the external screw thread on sleeve pipe 12 on the outer tube wall of front end with
External thread rotary on sleeve pipe 12 on the outer tube wall of rear end is on the contrary, so, only need rotating casing 12, the He of connecting seat 11 before just can making
Afterwards connecting seat 13 it is close to each other/be located remotely from each other, so may be such that this without chain drive on vehicle frame is assembled to after slightly
Adjust the length of axle sleeve.
Spring bearing 9 is also equipped between the angular wheel 5 of cover of driver 14 and second after above-mentioned, to ensure the two assembling position
The stability put.
Middle shaft mounting hole formed with a lateral direction penetrating in above-mentioned preceding cover of driver 10, above-mentioned axis 2 are supported by axis
The rotation of bearing 15 is arranged in this in shaft mounting hole.
It is that the vehicle frame 1 in Fig. 1 also includes the chain stay 101 of vehicle, is connected to this with traditional electric bicycle fame identical
The anterior Five-way tube 102 of chain stay and the rear hook 103 for being connected to chain stay rear portion, wherein, above-mentioned preceding cover of driver 10 is arranged in
In the Five-way tube 102 and the two is locked, and electric machine main shaft 301 is locked in the rear on hook 103.
In addition, being additionally provided with middle shaft speed sensor at the axis 2, shaft speed sensor passes through circuit and rear-guard in this
The circuit of wheel hub motor 3 connects.During practical application, shaft speed sensor can sense the rotating speed of axis 2 in this, and be sensed according to it
Middle rotating speed size adjust the power output of rear-guard wheel hub motor 3.
Specifically in the present embodiment, above-mentioned middle shaft speed sensor employs following structures and assembling form：
The present embodiment, which is additionally provided with, to be sequentially distributed along the axis direction from-inner-to-outer of the axis 2 and is movably set in
Sealing ring 16, back-up ring 17, Hall subassembly 18 and locking end cap 19 outside the axis 2.Wherein lock end cap 19 and dynamic shell 10
Screw-threaded coupling is fixed, so as to which sealing ring 16, back-up ring 17, Hall subassembly 18 are pressed abd fixed on into locking end cap 19 and preceding cover of driver
Between 10.Velocity response magnet steel 20 corresponding with Hall subassembly 18 is fixedly installed on axis 2.Hall subassembly 18 and corresponding
Velocity response magnet steel 20 forms above-mentioned middle shaft speed sensor.
During practical application, when bicyclist tramples crank and rotates axis 2, velocity response magnet steel 20 is synchronous with axis 2
Rotate, its surrounding magnetic field changes, and Hall subassembly 18 senses the change in the magnetic field and knows the rotating speed of axis, and Hall
The magnetic variable signal is transferred to the controller of rear-guard wheel hub motor 3 by component 18, and controller adjusts rear-guard according to magnetic variable signal
The power output of wheel hub motor 3.
In order to strengthen the stability of sealing ring 16, back-up ring 17 and the rigging position of preceding cover of driver 10, the present embodiment is by described in
Back-up ring 17 is threadedly coupled with preceding cover of driver 10, so as to which the sealing ring 16 is pressed abd fixed on into the back-up ring 17 and preceding cover of driver
Between 10.Hall subassembly 18 is fixed with 17 circumferential inlay card of back-up ring.
During assembling, sealing ring 16 is initially introduced into, in screw-threaded coupling back-up ring 17 so that sealing ring 16 to be fixed.Afterwards will suddenly
You rabbet on back-up ring 17 component 18, then lock locking end cap 19, by the axial compression of Hall subassembly 18.
Moreover, above-mentioned preceding cover of driver 10 and Five-way tube 102 are also to be fixed together by locking end cap 19, locking end
Lid 19 is pressed on the end of Five-way tube, and (Five-way tube end carries the adjusting nut with locking the compression fit of end cap 19, does not mark in figure
Note).
Above-described embodiment is only the technical concepts and features for illustrating the application, and its object is to allow people to understand this Shen
Content please is simultaneously implemented according to this, and the protection domain of the application can not be limited with this.It is all according to the application main technical schemes
The equivalent transformation or modification that Spirit Essence is done, should all cover within the protection domain of the application.
Claims (7)
1. a kind of electric bicycle transmission device, for the crank and rear-guard wheel hub motor (3) of the electric bicycle that is connected, its
Including：
The axis (2) that on vehicle frame (1) and both ends are used to connect the crank is pivotally connected to,
The first angular wheel (4) being coaxially fixed on the axis (2),
For connecting the second angular wheel (5) of the rear-guard wheel hub motor (3),
The triconic gear (6) of connection is engaged with first angular wheel (4),
The 4th angular wheel (7) of connection is engaged with second angular wheel (5),
The power transmission shaft (8) being fixedly connected between the triconic gear and the 4th angular wheel, and the transmission
Axle (8), the triconic gear (6) and the 4th angular wheel (7) are coaxially arranged, and
The axle sleeve being connected on the vehicle frame (1), the power transmission shaft (8) is by spring bearing (9) rotary setting in the axle sleeve
It is interior；
The axle sleeve by from the preceding preceding cover of driver (10) being then detachably connected successively, preceding connecting seat (11), sleeve pipe (12), after
Connecting seat (13) and rear cover of driver (14) are formed, the preceding cover of driver (10) and the cover of driver (14) afterwards with it is described
Vehicle frame (1) is fixed；
The vehicle frame (1) includes chain stay (101), is connected to the anterior Five-way tube (102) of the chain stay and is connected to described flat
The rear hook (103) at rear portion is pitched, the preceding cover of driver (10) is arranged in the Five-way tube (102) and is locked, described
Axis (2) is assigned in the preceding cover of driver (10) by axis spring bearing (15) rotating dress；
Characterized in that, also include being sequentially distributed along the axis direction from-inner-to-outer of the axis (2) and being movably set in
Sealing ring (16), back-up ring (17), Hall subassembly (18) and the locking end cap (19) of the axis (2) outside；The locking end cap
(19) fixed with preceding cover of driver (10) screw-threaded coupling, so as to which the sealing ring (16), back-up ring (17), Hall subassembly (18) be pressed
Fasten between locking end cap (19) and preceding cover of driver (10)；Fixed setting and the Hall subassembly on the axis (2)
(18) velocity response magnet steel (20) corresponding to.
2. electric bicycle transmission device according to claim 1, it is characterised in that the back-up ring (17) and the forerunner
Dynamic shell (10) threaded connection, so as to by the sealing ring (16) be pressed abd fixed on the back-up ring (17) and preceding cover of driver (10) it
Between.
3. electric bicycle transmission device according to claim 2, it is characterised in that the Hall subassembly (18) with it is described
Back-up ring (17) circumferential inlay card is fixed.
4. electric bicycle transmission device according to claim 1, it is characterised in that second angular wheel (5)
Axial side is formed with axle and extended internally and the flower-drum with being fixed on the motor housing (302) of the rear-guard wheel hub motor (3)
(303) the flower-drum sleeve joint hole (501) to match.
5. electric bicycle transmission device according to claim 1, it is characterised in that cover of driver (14) and institute after described
State the second angular wheel (5) and be provided with spring bearing (9).
6. electric bicycle transmission device according to claim 1, it is characterised in that described sleeve pipe (12) with it is described before connect
Joint chair (11) passes through the interior internal thread screw thread set of the external screw thread and preceding connecting seat (11) that are set on the outer tube wall of sleeve pipe (12) front end
Connection, described sleeve pipe (12) and the connecting seat (13) afterwards by the external screw thread that is set on the outer tube wall of sleeve pipe (12) rear end and after connect
The internal thread threaded connection set in joint chair (13), and the external screw thread on the front end outer tube wall and institute in described sleeve pipe (12)
The external screw thread stated on sleeve pipe (12) on the rear end outer tube wall is oppositely oriented.
7. a kind of electric bicycle, including vehicle frame (1), it is characterised in that also include as described in any in claim 1~6
Electric bicycle transmission device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720430016.5U CN206664846U (en) | 2017-04-20 | 2017-04-20 | Electric bicycle transmission device and the electric bicycle for configuring the device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720430016.5U CN206664846U (en) | 2017-04-20 | 2017-04-20 | Electric bicycle transmission device and the electric bicycle for configuring the device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206664846U true CN206664846U (en) | 2017-11-24 |
Family
ID=60375727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720430016.5U Expired - Fee Related CN206664846U (en) | 2017-04-20 | 2017-04-20 | Electric bicycle transmission device and the electric bicycle for configuring the device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206664846U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904243A (en) * | 2017-04-20 | 2017-06-30 | 李纪召 | Electric bicycle transmission device and the electric bicycle for configuring the device |
| EP3604105A1 (en) * | 2018-07-30 | 2020-02-05 | Yamaha Hatsudoki Kabushiki Kaisha | A bicycle with an electric motor and a drive unit of the bicycle |
-
2017
- 2017-04-20 CN CN201720430016.5U patent/CN206664846U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106904243A (en) * | 2017-04-20 | 2017-06-30 | 李纪召 | Electric bicycle transmission device and the electric bicycle for configuring the device |
| EP3604105A1 (en) * | 2018-07-30 | 2020-02-05 | Yamaha Hatsudoki Kabushiki Kaisha | A bicycle with an electric motor and a drive unit of the bicycle |
| CN110775193A (en) * | 2018-07-30 | 2020-02-11 | 雅马哈发动机株式会社 | Bicycle and drive unit for a bicycle |
| CN110775193B (en) * | 2018-07-30 | 2022-05-13 | 雅马哈发动机株式会社 | Bicycle and drive unit for a bicycle |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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Granted publication date: 20171124 |