CN109866866A - Electric bicycle and transmission device - Google Patents
Electric bicycle and transmission device Download PDFInfo
- Publication number
- CN109866866A CN109866866A CN201910290847.0A CN201910290847A CN109866866A CN 109866866 A CN109866866 A CN 109866866A CN 201910290847 A CN201910290847 A CN 201910290847A CN 109866866 A CN109866866 A CN 109866866A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 117
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 54
- 230000009467 reduction Effects 0.000 abstract description 18
- 238000009434 installation Methods 0.000 abstract description 10
- 230000007246 mechanism Effects 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 10
- 238000013461 design Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 230000009194 climbing Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
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- 101000848724 Homo sapiens Rap guanine nucleotide exchange factor 3 Proteins 0.000 description 1
- 102100034584 Rap guanine nucleotide exchange factor 3 Human genes 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/55—Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H49/00—Other gearings
- F16H49/001—Wave gearings, e.g. harmonic drive transmissions
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Retarders (AREA)
Abstract
An electric bicycle and a transmission device, the transmission device comprises: a motor including a rotor; the harmonic reducer comprises a wave generator, a flexible gear and a rigid gear, wherein the wave generator is connected with the rotor in a torque-resistant manner; an output shaft configured to be torsionally connected with a rigid gear or a flexible gear of the harmonic reducer. According to the transmission device provided by the embodiment of the invention, the harmonic reducer and the motor are integrated into a whole to realize speed reduction and torque increase transmission, and a larger speed reduction ratio can be obtained in a limited installation space, so that transmission mechanisms such as multi-stage gear transmission, planetary gear transmission or bevel gear transmission are not needed, the structure of the whole integrated transmission mechanism is more compact, the quality is lighter, the transmission efficiency is higher, and higher output torque is obtained.
Description
Technical field
The present embodiments relate to transmission technical field more particularly to a kind of Moped Scooters and transmission device.
Background technique
Electric assisted bicycle (Pedelec/EPAC/E-bike) refers on the basis of ordinary bicycle, is equipped with electricity
The components such as machine, controller, electric assisted bicycle do not have pure power mode generally, are dynamic by the mixing of " manpower+electric power "
Power is driven, because there is the auxiliary of motor power-assisted, bicyclist can be allowed to become more laborsaving and light, can be used as daily commuting
With the tool of recreational walking, in terms of appearance, the difference of electric assisted bicycle and standard bicycle is little, compared to electric vehicle
For, then seem very light.
Electric assisted bicycle on the market is passed by means of a stand-by motor and multistage gear drive or planetary gear
Dynamic or bevel gear carries out power-assisted transmission, and the structure design of these transmission devices is more complex, and quality is larger, and transmission efficiency is lower,
Higher cost.
Therefore, how to design a kind of compact-sized, the higher transmission device of transmission efficiency, the technology for becoming urgent need to resolve is asked
Topic.
Summary of the invention
The technical issues of embodiment of the present invention solves is to design a kind of compact-sized, higher transmission device of transmission efficiency.
To solve the above problems, the embodiment of the present invention provides a kind of transmission device, comprising:
Motor, including rotor；
Harmonic speed reducer, including wave producer, flexible gear and rigid gear, the wave producer and the rotor are antitorque
Connect to square；
Output shaft is configured to connect with the rigid gear of the harmonic speed reducer or flexible gear torque resistant.
Optionally, the transmission device further include:
Motor one-way clutch is set between the output shaft and the harmonic speed reducer, described to cut off or realize
It is connected to torque resistant between harmonic speed reducer and the output shaft.
Optionally, the output shaft offers output shaft through-hole, the transmission device further include:
Pedal shaft is plugged in the output shaft through-hole, and can be connect with the output shaft torque resistant.
Optionally, the transmission device further include:
Pedal shaft one-way clutch is set between the pedal shaft and the output shaft, to cut off or realize described step on
It is connected to torque resistant between board shaft and the output shaft.
Optionally, the transmission device further include:
Flange shaft is fixed on the harmonic speed reducer, and is coaxially disposed with the output shaft, the motor one-way clutch
Device is set between the output shaft and the flange shaft.
Optionally, the transmission device further include:
Connecting shaft, including rotor connecting pin and wave producer connecting pin, the rotor connecting pin are plugged in the rotor
It in connecting hole, and is connect with the rotor torque resistant, the wave producer connecting pin is plugged in the connection of the wave producer
In hole, and it is connect with the wave producer torque resistant.
Optionally, the transmission device further include:
Pedal axle sleeve is sheathed on the pedal shaft, and the pedal axle sleeve is connect with the pedal shaft torque resistant, institute
Pedal shaft one-way clutch is stated to be set between the pedal axle sleeve and the output shaft.
Optionally, the transmission device further include:
Cabinet；
Sensor housing, the first end of the sensor housing are fixed on the cabinet, and the of the sensor housing
Two end caps are set on the pedal shaft, and can be connect in relative rotation with the pedal axle sleeve；
Velocity sensor is fixed on the sensor housing, to detect and send the speed signal of the pedal shaft.
Optionally, the transmission device further include:
Torque sensor is fixed on the sensor housing, covers upper torque letter to detect and send the pedal shaft
Number.
Optionally, the pedal axle sleeve includes the first axle sleeve and the second axle sleeve, and second axle sleeve is sheathed on described first
On axle sleeve, and first axle sleeve is connect with the second axle sleeve torque resistant, and the pedal shaft one-way clutch is set to institute
It states between the second axle sleeve and the output shaft.
Optionally, the first end of first axle sleeve is fixed on the pedal shaft, the second end of first axle sleeve and institute
State the connection of the second axle sleeve spline.
Optionally, the first end of the sensor housing is fixed on the cabinet, the second end of the sensor housing
It is sheathed on the first axle to put on, and can be rotated relative to first axle sleeve.
Optionally, the connecting shaft offers connection shaft through-hole, and the flange shaft offers flange shaft through-hole, the pedal
Axis is plugged in the connection shaft through-hole and the flange shaft through-hole.
Optionally, the motor is built-in motor.
To solve the above problems, the embodiment of the present invention provides a kind of Moped Scooter, including above-mentioned transmission device.
Compared with prior art, the technical solution of the embodiment of the present invention has the advantage that
Transmission device provided by the embodiment of the present invention, comprising: motor, including rotor；Harmonic speed reducer, including wave occur
Device, flexible gear and rigid gear, the wave producer are connect with the rotor torque resistant；Output shaft, be configured to it is described
Connect to the rigid gear of harmonic speed reducer or flexible gear torque resistant.Transmission device provided by the embodiment of the present invention, institute
It states wave producer to connect with the rotor torque resistant, the rigid gear or flexible gear and output shaft of harmonic speed reducer are antitorque
It connects to square, the output torque of motor can pass to wave producer by rotor, so that wave producer is rotated, work as harmonic reduction
When the flexible gear of device is connect with output shaft torque resistant, rigid gear is fixed, and flexible gear is rotated with wave producer,
And changing flexible gear and rigid gear meshed gears, but wave producer has rotated many circles, flexible gear could rotate one
Circle, to realize biggish reduction ratio, delivers torque to output shaft eventually by flexible gear；Similarly, work as harmonic speed reducer
Rigid gear when being connect with output shaft torque resistant, flexible gear is fixed, and rigid gear is rotated with wave producer, and
Changing flexible gear and rigid gear meshed gears, but wave producer has rotated many circles, rigid gear, which could revolve, to turn around,
To realize biggish reduction ratio, output shaft is delivered torque to eventually by rigid gear.Provided by the embodiment of the present invention
Transmission device carries out the adjustment of output revolving speed and torque using harmonic speed reducer, by the way that harmonic speed reducer and motor to be integrated into
One realizes the transmission of deceleration torque increase, can be obtained biggish reduction ratio in limited installation space, to avoid using multistage
Gear drive, so that entirely the structure of integrated transmission mechanism is more compact, quality is lighter, and transmission efficiency is higher and obtains higher
Output torque.
In optinal plan, the transmission device further include: motor one-way clutch is set to the output shaft and described humorous
Between wave retarder, connected to torque resistant between the harmonic speed reducer and the output shaft with cutting off or realizing.Work as output shaft
Speed lower than harmonic speed reducer flexible gear (or rigid gear) speed when, motor can by flexible gear (or
Person's rigid gear) output shaft is delivered torque to, and when the speed of output shaft is higher than the speed of flexible gear (or rigid gear)
When spending, motor one-way clutch makes output shaft not deliver torque to motor, to prevent output shaft is counter from motor being dragged to rotate, from
And security performance is improved, reduce energy loss.
In optinal plan, the transmission device, further includes: pedal shaft one-way clutch is set to the pedal shaft and institute
It states between output shaft, is connected to torque resistant between the pedal shaft and the output shaft with cutting off or realizing.When the speed of output shaft
When degree is lower than the speed of pedal shaft, pedal shaft can deliver torque to output shaft by pedal shaft clutch, and when output shaft
When speed is higher than the speed of pedal shaft, pedal shaft one-way clutch makes output shaft not deliver torque to pedal shaft, to prevent
Only output shaft drives pedal shaft reversion, to improve security performance.It is unidirectional by using motor uniline clutch and pedal shaft
Clutch to manpower driving transmission and electronic accessory drive process be respectively controlled, can to avoid in pedal shaft and motor same
When to output shaft transfer of torque during, output shaft revolving speed be higher than motor speed when drive motor reversal, reduce energy damage
Consumption, output shaft drives pedal shaft reversion when can also be higher than pedal shaft revolving speed to avoid output shaft revolving speed, further improves and rides
The personal safety of person.Transmission device provided by the embodiment of the present invention, it is unidirectional because being provided with motor one-way clutch and pedal shaft
Clutch, thus manpower driving transmission and electronic accessory drive process are two relatively independent transmission process, manpower driving passes
Torque can be superimposed to output shaft by dynamic and electronic accessory drive simultaneously, motor one-way clutch and pedal shaft one-way clutch
The security performance for improving transmission process is set.
In optinal plan, the connecting shaft offers connection shaft through-hole, and the flange shaft offers flange shaft through-hole, described
Pedal shaft is plugged in the connection shaft through-hole and the flange shaft through-hole.In this way, will be exported by one pedal shaft of setting
Axis, flange shaft, connecting shaft are sheathed on pedal shaft, further reduce occupied space, improve compact type, while into
One step reduces the total weight of entire transmission device, so that transmission device is lighter.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of application for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of cross-sectional view of transmission device provided by the embodiment of the present invention；
Fig. 2 is the cross-sectional view of the harmonic speed reducer of transmission device provided by the embodiment of the present invention；
Fig. 3 is the side view of the harmonic speed reducer of transmission device provided by the embodiment of the present invention；
Fig. 4 is the cross-sectional view of another kind transmission device provided by the embodiment of the present invention.
Wherein: 1- pedal shaft；The first cabinet of 2-；3- stator；4- rotor；The second cabinet of 5-；6- rigid gear；60- flange
Axis；7- flexible gear；70- flange shaft；8- wave producer；9- third cabinet；10- bearing；11- motor one-way clutch；12- chain
Wheel；13- bearing；14- pedal shaft one-way clutch；15- output shaft；16- bearing；The second axle sleeve of 17-；18- sliding part；19-
One axle sleeve；20- sensor housing；21- connecting shaft；22- bearing；23- bearing；24- magnetic rings；25- bearing.
Specific embodiment
It can be seen from background technology that, the structure design of current transmission device is more complex, and quality is larger, and transmission efficiency is lower,
Higher cost.
In order to keep transmission structures more compact, transmission efficiency is improved, the embodiment of the invention provides a kind of transmission dresses
It sets, comprising: motor, including rotor；Harmonic speed reducer, including wave producer, flexible gear and rigid gear, the wave producer
It is connect with the rotor torque resistant；Output shaft is configured to anti-with the rigid gear of the harmonic speed reducer or flexible gear
Connect to torque.Transmission device provided by the embodiment of the present invention, the wave producer is connect with the rotor torque resistant, humorous
The rigid gear or flexible gear of wave retarder are connect with output shaft torque resistant, and the output torque of motor can be passed by rotor
Wave producer is passed, wave producer is made to rotate, when the flexible gear of harmonic speed reducer is connect with output shaft torque resistant,
Rigid gear is fixed, and flexible gear is rotated with wave producer, and changes the tooth that flexible gear is engaged with rigid gear, but
Wave producer has rotated many circles, and flexible gear, which could revolve, to turn around, so that biggish reduction ratio is realized, eventually by flexible tooth
Wheel delivers torque to output shaft；Similarly, when the rigid gear of harmonic speed reducer is connect with output shaft torque resistant, flexible tooth
Wheel is fixed, and rigid gear is rotated with wave producer, and changes flexible gear and rigid gear meshed gears, but wave is sent out
Raw device has rotated many circles, and rigid gear, which could revolve, to turn around, thus realize biggish reduction ratio, it will eventually by rigid gear
Torque passes to output shaft.Transmission device provided by the embodiment of the present invention carries out output revolving speed and torsion using harmonic speed reducer
The adjustment of square realizes that deceleration torque increase is driven by the way that harmonic speed reducer and motor become one, in limited installation space
It can be obtained biggish reduction ratio, to avoid using multistage gear drive, so that entirely integrating the structure of transmission mechanism more
Compact, quality is lighter, and transmission efficiency is higher and obtains higher output torque.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It should be noted that the orientation or positional relationship of instruction involved by this specification is side based on the figure
Position or positional relationship are merely for convenience of description and simplification description, rather than the device of indication or suggestion meaning must have spy
Fixed orientation with specific orientation construction, therefore is not considered as limiting the invention.
To be configured to be connected as with the flexible gear torque resistant of the harmonic speed reducer with output shaft first convenient for illustrating
Example, technical scheme in the embodiment of the invention is clearly and completely described, then again to output shaft be configured to it is described humorous
The scheme connected to the rigid gear torque resistant of wave retarder is illustrated.
Fig. 1-Fig. 3 is please referred to, Fig. 1 is a kind of cross-sectional view of transmission device provided by the embodiment of the present invention；Fig. 2 is this hair
The cross-sectional view of the harmonic speed reducer of transmission device provided by bright embodiment；Fig. 3 is transmission dress provided by the embodiment of the present invention
The side view for the harmonic speed reducer set.
As shown in the figure, transmission device provided by the embodiment of the present invention, comprising:
Motor, including rotor 4；
Harmonic speed reducer, including wave producer 8, flexible gear 7 and rigid gear 6, the wave producer 8 and the rotor
Connect to 4 torque resistants；
Output shaft 15 is configured to connect with 7 torque resistant of flexible gear of the harmonic speed reducer.
It is easily understood that torque resistant connect, refer to that torque can be transmitted therebetween, specifically can be realized antitorque
The mode of square connection may include spline connection, be interference fitted etc., and support for convenience, transmission device may include case
Body, output shaft are supported on cabinet, in one embodiment, in order to reduce abrasion, output shaft 15 can by bearing support in
On the cabinet of transmission device, in other embodiments, output shaft 15 can also be to be supported on cabinet by bushing.
On the other hand, in the present embodiment, flexible gear 7 is connect with 15 torque resistant of output shaft, thus, flexible gear
7 power output end as harmonic speed reducer, and rigid gear 6 is fixed on the cabinet of transmission device.
Rigid gear 6 have internal tooth, flexible gear 7 have external tooth, 2 tooth up to fewer than flexible gear 7 of rigid gear 6, when
After wave producer 8 is packed into flexible gear 7, the section of flexible gear 7 is forced to become ellipse, long axis both ends by original circle
The tooth of neighbouring tooth and rigid gear 6 is at a fully engaged, and the tooth near short axle both ends is then completely disengaged with rigid gear.Circumference side
The transition state that the tooth of other upward sections is in engagement and is detached from.When 8 continuous rotation of wave producer, the change of flexible gear 7
Shaped position constantly changes, and changes flexible gear 7 and the meshing state of rigid gear 6 also constantly, by it is engaging-in, engage, nibble out, is de-
It opens, is engaging-in again ..., carrying out again and again, to realize 7 relative stiffness gear 6 of flexible gear along 8 phase negative side of wave producer
To slow rotation.When the rotation of flexible gear 7 is turned around, wave producer 8 rotates many circles, to realize the work of deceleration torque increase
With.As electric auxiliary drive, the range of harmonic speed reducer rotation speed with higher, the reduction ratio of harmonic speed reducer can be set
It is calculated as 1:30-1:300, thus harmonic speed reducer can obtain biggish reduction ratio, and so big reduction ratio, single-order gear pass
Dynamic to be difficult to, therefore, harmonic speed reducer can obtain higher transmission efficiency and higher in limited installation space
Output torque, so that gear spinning transmission bring be avoided to occupy larger installation space, and the problem that quality is larger.
Transmission device provided by the embodiment of the present invention, harmonic speed reducer need to only play the work of deceleration in the transmission device
With, without regard to its positioning accuracy or rigid requirements, thus rigid gear 6, flexible gear 7 and wave producer 8
It is produced in batches in a manner of through optimization cost, for example, the techniques such as punching press, broaching, therefore the processing cost energy of harmonic speed reducer
It is enough to significantly reduce.
Transmission device provided by the embodiment of the present invention, the wave producer 8 is connect with 4 torque resistant of rotor, humorous
The flexible gear 7 of wave retarder is connect with 15 torque resistant of output shaft, and the output torque of motor can be passed to wave hair by rotor 4
Raw device 8, makes wave producer 8 rotate, when the flexible gear 7 of harmonic speed reducer is connect with 15 torque resistant of output shaft, just
Property gear 6 it is fixed, flexible gear 7 is rotated with wave producer 8, and changes the tooth that flexible gear 7 is engaged with rigid gear 6
Wheel, but wave producer 8 has rotated many circles, and flexible gear 7, which could revolve, to turn around, thus realize biggish reduction ratio, it is final logical
It crosses flexible gear 7 and delivers torque to output shaft 15；Similarly, when the rigid gear of harmonic speed reducer 6 and 15 torque resistant of output shaft
When ground connects, flexible gear 7 is fixed, and rigid gear 6 is rotated with wave producer 8, and changes flexible gear 7 and rigid teeth
The tooth of 6 engagement of wheel, but wave producer 8 has rotated many circles, and rigid gear 6, which could revolve, to turn around, to realize biggish deceleration
Than delivering torque to output shaft 15 eventually by rigid gear 6.Transmission device provided by the embodiment of the present invention, utilization are humorous
Wave retarder carries out the adjustment of output revolving speed and torque, realizes deceleration torque increase by the way that harmonic speed reducer and motor become one
Transmission, can be obtained biggish reduction ratio, to avoid using multistage gear drive, so that entirely in limited installation space
The structure of integrated transmission mechanism is more compact, and quality is lighter, and transmission efficiency is higher and obtains higher output torque.
It continues to refer to figure 1, in a specific embodiment, the transmission device further include:
Motor one-way clutch 11 is set between the output shaft 15 and the harmonic speed reducer, to cut off or realize
It is connected to torque resistant between the harmonic speed reducer and the output shaft 15.
In the case where motor one-way clutch 11 is closed, when the speed of output shaft 15 is lower than the flexible tooth of harmonic speed reducer
When the speed of wheel 7, motor can deliver torque to output shaft 15 by flexible gear 7, be ultimately transferred to sprocket wheel 12, and when defeated
When the speed of shaft 15 is higher than the speed of flexible gear 7, motor one-way clutch 11 transmit output shaft 15 will not by torque
To motor, to prevent output shaft 15 is counter from motor being dragged to rotate, to improve security performance, energy loss is reduced.In motor list
In the case where disconnecting to clutch 11, motor one-way clutch 11 is by the flexible gear 7 for cutting off harmonic speed reducer and the output
It is connected to torque resistant between axis 15.
In a specific embodiment, the transmission device can also include:
Connecting shaft 21, including rotor connecting pin and wave producer connecting pin, the rotor connecting pin are plugged in the rotor
Connecting hole in, and connect with 4 torque resistant of rotor, 8 connecting pin of wave producer is plugged in the wave producer 8
In connecting hole, and it is connect with 8 torque resistant of wave producer.To which the output torque of motor just passes through connecting shaft 21 and transmits
To wave producer 8.
The setting of connecting shaft 21 ensure that the power transmission between rotor 4 and wave producer 8, meanwhile, also facilitate each dress
The arrangement set saves used space.
Connecting shaft 21, or the axis with ring flange, ring flange are connect with wave producer 8, improve the reliable of connection
Property.
Similarly, in another embodiment, the transmission device can also include:
Flange shaft 70 is fixed on the harmonic speed reducer, and is coaxially disposed with the output shaft 15, and the motor is unidirectional
Clutch 11 is set between the output shaft 15 and the flange shaft 70.To which the output torque of flexible gear just passes through method
Blue axis 70 passes to output shaft 15.
Specifically, flange shaft 70 is fixed on flexible gear 7, thus, the output torque of wave producer 8 passes through flexible gear
7, flange shaft 70, motor one-way clutch 11 are ultimately transferred to output shaft 15.
The setting of flange shaft 70 ensure that the power transmission between flexible gear 7 and output shaft, meanwhile, it also facilitates each
The arrangement of device saves used space.
It continues to refer to figure 1, in a specific embodiment, the output shaft 15 offers output shaft through-hole, the transmission
Device further include:
Pedal shaft 1 is plugged in the output shaft through-hole, and can be connect with 15 torque resistant of output shaft.Pedal shaft 1
It is connect with 15 torque resistant of output shaft, realizes and the torque of pedal shaft 1 is passed into output shaft 15, be ultimately transferred to sprocket wheel
12。
By setting hollow shaft for output shaft 15, so as to which output shaft 15 to be sheathed on pedal shaft 1, save defeated
The installation space of shaft 15 reduces the volume of transmission device.
The both ends of pedal shaft 1 are for connecting foot pedal, and in the present embodiment, the first end of pedal shaft 1 passes through the fixation of bearing 25
In on cabinet, the second end of pedal shaft 1 is supported on output shaft 15 by bearing 16.In other embodiments, bearing 16 and axis
Holding 25 could alternatively be bushing.
In the present embodiment, for the ease of installation casing, cabinet design is at three parts, respectively the first cabinet 2, the second cabinet
5 and third cabinet 9, it is fixedly connected between each cabinet.The stator 3 of motor is fixed on the first cabinet 2.Output shaft 15 passes through axis
Hold 10 and bearing 13 be supported on third cabinet 9, sprocket wheel 12 is fixed on output shaft 15.Certainly, in other embodiments, cabinet
It is also possible to integrated box.
Similarly, in order to further save space, the connecting shaft 21 can offer connection shaft through-hole,
The flange shaft 70 can offer flange shaft through-hole, and the pedal shaft 1 is plugged in the connection shaft through-hole and method
In blue shaft through-hole.
The rotor connecting pin of connecting shaft 21 is supported on the first cabinet 2 by bearing 23, and the wave producer of connecting shaft 21 connects
End is connect to be supported on the second cabinet 5 by bearing 22.Similarly, bearing 22 and bearing 23 may be replaced by bushing.Due to output
Axis 15, flange shaft 70 and connecting shaft 21 are hollow shaft, thus transmission device provided by the embodiment of the present invention is different from and works as
Preceding multiaxial type gear drive, it is larger to reduce multistage transmission bring size, the larger problem of weight, to greatly save
Installation space.
It continues to refer to figure 1, in a specific embodiment, the transmission device further include:
Pedal shaft one-way clutch 14 is set between the pedal shaft 1 and the output shaft 15, to cut off or realize institute
It states and is connected to torque resistant between pedal shaft 1 and the output shaft 15.
In the case where pedal shaft one-way clutch 14 is closed, when the speed of output shaft 15 is lower than the speed of pedal shaft 1,
Pedal shaft one-way clutch 14 can make pedal shaft 1 deliver torque to output shaft 15, be ultimately transferred to sprocket wheel 12.And when output
When the speed of axis 15 is higher than the speed of pedal shaft 1, output shaft 15 will not deliver torque to pedal shaft 1, to prevent output shaft 15
It is counter that pedal shaft 1 is dragged to rotate, to further improve security performance.In the case where pedal shaft one-way clutch 14 disconnects, step on
Board shaft one-way clutch 14 will cut off and connect to torque resistant between pedal shaft 1 and the output shaft 15.
By using motor uniline clutch 11 and pedal shaft one-way clutch 14 to manpower driving transmission and electronic auxiliary
Transmission process is respectively controlled, can to avoid during pedal shaft 1 and motor give 15 transfer of torque of output shaft at the same time,
15 revolving speed of output shaft drives motor reversal when being higher than motor speed, reduces energy loss, can also be to avoid 15 revolving speed of output shaft
Output shaft 15 drives pedal shaft 1 to invert when higher than 1 revolving speed of pedal shaft, further improves the personal safety of bicyclist.The present invention
Transmission device provided by embodiment, because being provided with motor one-way clutch 11 and pedal shaft one-way clutch 14, thus manpower
Driving transmission and electronic accessory drive process are two relatively independent transmission process, manpower driving transmission and electronic accessory drive
Torque can be superimposed to output shaft 15 simultaneously, the setting of motor one-way clutch 11 and pedal shaft one-way clutch 14 improves
The security performance of transmission process.
As shown in Figure 1, in a specific embodiment, the transmission device, further includes:
Pedal axle sleeve, is sheathed on the pedal shaft 1 and the pedal axle sleeve is connect with 1 torque resistant of pedal shaft,
The pedal shaft one-way clutch 14 is set between the pedal axle sleeve and the output shaft 15.
When bicyclist's Pedalling drives pedal shaft 1 to rotate, because pedal axle sleeve is fixed on pedal shaft 1, thus pedal shaft 1
Torque can pass to pedal axle sleeve, final pedal axle sleeve imparts power to output shaft by pedal shaft one-way clutch 14
15。
The setting of pedal axle sleeve facilitates the arrangement of each device, saves used space.
For the ease of processing, in a specific embodiment, 1 set of the pedal shaft includes the first axle sleeve 19 and the second axle sleeve
17, second axle sleeve 17 is sheathed on first axle sleeve 19, and first axle sleeve 19 and second axle sleeve 17 are antitorque
It connects to square, the pedal shaft one-way clutch 14 is set between second axle sleeve 17 and the output shaft 15.
In the present embodiment, for easy to process and assembling, connected between the first axle sleeve 19 and the second axle sleeve 17 by spline, the
The first end of one axle sleeve 19 is fixed on pedal shaft 1, and the second end of the first axle sleeve 19 is connect with the second axle sleeve 17 by spline.?
It in other embodiments, can also connect, for example be interference fitted, weld otherwise between the first axle sleeve 19 and the second axle sleeve 17
It connects, bonding etc..
It continues to refer to figure 1, it is in a specific embodiment, described in order to realize that the working condition to motor controls
Transmission device, further includes:
The first end of sensor housing 20, the sensor housing 20 is fixed on the cabinet, the sensor housing
Second end be sheathed on the pedal shaft 1, and can be relatively rotated along the pedal axle sleeve；
Velocity sensor is fixed on the sensor housing 20, to detect and send the speed letter of the pedal shaft 1
Number.
Specifically, the first end of sensor housing 20 is fixed on the first cabinet 2, when pedal axle sleeve includes the first axle sleeve 19
When with the second axle sleeve 17, the second end of sensor housing 20 is supported in the first axle sleeve by sliding part 18 (sliding axle bearing/bushing)
On 19.Magnetic rings 24 can be fixed on the pedal shaft 1, velocity sensor incudes speed signal by magnetic rings 24, and will
Speed signal is sent to controller, after controller receives speed signal, controls motor, rides to realize in manpower
Play the role of electric power auxiliary in the process.Certainly, in other embodiments, velocity sensor is also possible to through such as electric signal
Etc. modes acquisition speed signal.When flat road surface when driving, controller can pass through velocity sensor detect speed signal
Accurate judgement is made, to correctly control motor.
However, being only inaccurate with the speed signal of velocity sensor detection, when meeting climbing, rough road condition for example, climbing
The speed that manpower is pedaled when slope is very slow, and torque is but very big, rides highly difficult at this time, needs motor assist and ride, and since speed passes
The speed that sensor detects is lower, can not open motor power-assisted in time.
In order to more accurately control motor, in a specific embodiment, the transmission device further include: torque sensing
Device is fixed on the sensor housing 20, to detect and send the torque signal of the pedal shaft 1.Controller receives torsion
After square signal, motor is controlled.
Pedal axle sleeve can be torque sensing unit, when the torque transmitted thereon changes, on sensor housing 20
Torque sensor can detect the variation of the torque, and be converted into electric signal output.When pedal axle sleeve includes 19 He of the first axle sleeve
When the second axle sleeve 17, in one embodiment, the first axle sleeve 19 can be torque sensing unit, in another embodiment,
It can be and regard the second axle sleeve 17 as torque sensing unit.
The principle of contactless torque detection can be counter magnetostriction effect, magnetoresistance etc..
In a specific embodiment, the motor is built-in motor.Built-in motor can make center of gravity distribution more reasonable, protect
Hold the gravity balance of vehicle.Certainly, in other embodiments, motor can also be hub motor.
Referring to FIG. 4, Fig. 4 is the cross-sectional view of another kind transmission device provided by the embodiment of the present invention.
Details are not described herein with the something in common of previous embodiment, with the difference of previous embodiment with:
Output shaft 15 is configured to connect with 6 torque resistant of rigid gear of the harmonic speed reducer.Flexible gear 7 is fixed on
On second cabinet 5.
Specifically, flange shaft 60 is fixed on rigid gear 6, and the output torque of wave producer 8 passes through rigid gear 6, method
Blue axis 60, motor one-way clutch 11 pass to output shaft 15, are ultimately transferred to sprocket wheel 12.
When the rigid gear 6 of harmonic speed reducer is connect with 15 torque resistant of output shaft, flexible gear 7 is fixed, rigid teeth
Wheel 6 is rotated with wave producer 8, and changes the tooth that flexible gear 7 is engaged with rigid gear 6, but wave producer 8 has rotated
Many circles, rigid gear 6, which could revolve, to turn around, to realize biggish reduction ratio, transmits torque eventually by rigid gear 6
To output shaft 15.
To solve the above problems, the embodiment of the present invention also provides a kind of Moped Scooter, including above-mentioned transmission device.
Moped Scooter can be electric assisted bicycle, can also be that disabled person's moped, all needs pass through
The walking-replacing tool for manpower+be driven by electricity, can be used transmission device provided by the embodiment of the present invention.
When manpower is ridden, transmission device can provide electric power-assisted, so that bicyclist is ridden more easily, work as harmonic speed reducer
Flexible gear when being connect with output shaft torque resistant, rigid gear is fixed, and flexible gear is rotated with wave producer, and
Changing flexible gear and rigid gear meshed gears, but wave producer has rotated many circles, flexible gear, which could revolve, to turn around,
To realize biggish reduction ratio, output shaft is delivered torque to eventually by flexible gear；Similarly, rigid when harmonic speed reducer
When property gear is connect with output shaft torque resistant, flexible gear is fixed, and rigid gear is rotated with wave producer, and is changed
Flexible gear and rigid gear meshed gears, but wave producer has rotated many circles, and rigid gear, which could revolve, to turn around, thus
It realizes biggish reduction ratio, delivers torque to output shaft eventually by rigid gear.It is electronic provided by the embodiment of the present invention
Vehicle using motor, transmission device carry out the adjustment of output revolving speed and torque using harmonic speed reducer, by by harmonic speed reducer and motor
Become one and realize that deceleration torque increase is driven, can be obtained biggish reduction ratio in limited installation space, to avoid making
With multistage gear drive, so that entirely the structure of integrated transmission mechanism is more compact, quality is lighter, and transmission efficiency is higher and obtains
Obtain higher output torque.Because there is the auxiliary of motor power-assisted, bicyclist can be allowed to become more laborsaving and light, Moped Scooter
Volume it is lighter, in terms of appearance, Moped Scooter is closer to standard bicycle.
Although the embodiment of the present invention discloses as above, present invention is not limited to this.Anyone skilled in the art, not
It is detached from the spirit and scope of the present invention, can make various changes or modifications, therefore protection scope of the present invention should be with right
It is required that subject to limited range.
Claims (15)
1. a kind of transmission device characterized by comprising
Motor, including rotor；
Harmonic speed reducer, including wave producer, flexible gear and rigid gear, the wave producer and the rotor torque resistant
Connection；
Output shaft is configured to connect with the rigid gear of the harmonic speed reducer or flexible gear torque resistant.
2. transmission device as described in claim 1, which is characterized in that further include:
Motor one-way clutch is set between the output shaft and the harmonic speed reducer, to cut off or realize the harmonic wave
It is connected to torque resistant between retarder and the output shaft.
3. transmission device as claimed in claim 2, which is characterized in that the output shaft offers output shaft through-hole, the biography
Dynamic device further include:
Pedal shaft is plugged in the output shaft through-hole, and can be connect with the output shaft torque resistant.
4. transmission device as claimed in claim 3, which is characterized in that further include:
Pedal shaft one-way clutch is set between the pedal shaft and the output shaft, to cut off or realize the pedal shaft
It is connected to torque resistant between the output shaft.
5. transmission device according to any one of claims 1-4, which is characterized in that further include:
Flange shaft is fixed on the harmonic speed reducer, and is coaxially disposed with the output shaft, and the motor one-way clutch is set
It is placed between the output shaft and the flange shaft.
6. transmission device as claimed in claim 5, which is characterized in that further include:
Connecting shaft, including rotor connecting pin and wave producer connecting pin, the rotor connecting pin are plugged in the connection of the rotor
In hole, and it is connect with the rotor torque resistant, the wave producer connecting pin is plugged in the connecting hole of the wave producer,
And it is connect with the wave producer torque resistant.
7. transmission device as claimed in claim 6, which is characterized in that further include:
Pedal axle sleeve is sheathed on the pedal shaft, and the pedal axle sleeve is connect with the pedal shaft torque resistant, described to step on
Board shaft one-way clutch is set between the pedal axle sleeve and the output shaft.
8. transmission device as claimed in claim 7, which is characterized in that further include:
Cabinet；
Sensor housing, the first end of the sensor housing are fixed on the cabinet, the second end of the sensor housing
It is sheathed on the pedal shaft, and can be connect in relative rotation with the pedal axle sleeve；
Velocity sensor is fixed on the sensor housing, to detect and send the speed signal of the pedal shaft.
9. transmission device as claimed in claim 8, which is characterized in that further include:
Torque sensor is fixed on the sensor housing, covers upper torque signal to detect and send the pedal shaft.
10. transmission device as claimed in claim 9, which is characterized in that the pedal axle sleeve includes the first axle sleeve and the second axis
Set, second axle sleeve is sheathed on the first axle and puts on, and first axle sleeve is connect with the second axle sleeve torque resistant,
The pedal shaft one-way clutch is set between second axle sleeve and the output shaft.
11. transmission device as claimed in claim 10, which is characterized in that the first end of first axle sleeve is fixed on described step on
Board shaft, the second end of first axle sleeve are connect with the second axle sleeve spline.
12. transmission device as claimed in claim 11, which is characterized in that the first end of the sensor housing is fixed on described
On cabinet, the second end of the sensor housing is sheathed on the first axle and puts on, and can rotate relative to first axle sleeve.
13. transmission device as claimed in claim 12, which is characterized in that the connecting shaft offers connection shaft through-hole, described
Flange shaft offers flange shaft through-hole, and the pedal shaft is plugged in the connection shaft through-hole and the flange shaft through-hole.
14. transmission device according to any one of claims 1-4, which is characterized in that the motor is built-in motor.
15. a kind of Moped Scooter, which is characterized in that including such as described in any item transmission devices of claim 1-14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910290847.0A CN109866866A (en) | 2019-04-11 | 2019-04-11 | Electric bicycle and transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910290847.0A CN109866866A (en) | 2019-04-11 | 2019-04-11 | Electric bicycle and transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109866866A true CN109866866A (en) | 2019-06-11 |
Family
ID=66922472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910290847.0A Pending CN109866866A (en) | 2019-04-11 | 2019-04-11 | Electric bicycle and transmission device |
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| Country | Link |
|---|---|
| CN (1) | CN109866866A (en) |
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| CN111232120A (en) * | 2020-03-13 | 2020-06-05 | 珠海市钧兴机电有限公司 | Different-shaft type automatic stepless hybrid speed change system and power-assisted bicycle |
| CN111315647A (en) * | 2020-01-30 | 2020-06-19 | 深圳市喜德盛自行车股份有限公司 | Intelligent middle harmonic speed reducing motor |
| CN111846096A (en) * | 2020-07-09 | 2020-10-30 | 大川电机科技(江苏)有限公司 | Torque sensor, middle-placed motor and electric power-assisted bicycle |
| WO2021044157A1 (en) * | 2019-09-04 | 2021-03-11 | Freeflow Technologies Limited | Strain wave gears, vehicle drive systems including same and methods of torque and cadence measurement |
| EP3822154A1 (en) * | 2019-11-15 | 2021-05-19 | ZhuHai KwunHing Machinery & Electronic Co. Ltd. | Harmonic drive system for pedal electric cycle |
| CN114379692A (en) * | 2020-10-06 | 2022-04-22 | 盟英科技股份有限公司 | Harmonic speed reduction module, power device, power output system and electric bicycle |
| CN114475896A (en) * | 2022-03-21 | 2022-05-13 | 林国尊 | Dual-motor driving device for carrier |
| WO2023015739A1 (en) * | 2021-08-13 | 2023-02-16 | 中国科学院宁波材料技术与工程研究所 | Rotary driving device and method for correcting system error of rotary driving device |
| US20230182325A1 (en) * | 2021-12-10 | 2023-06-15 | Coretronic Mems Corporation | Joint actuator of robot |
| TWI806175B (en) * | 2021-09-30 | 2023-06-21 | 德禮實業有限公司 | Dual motor drives for vehicles |
| WO2024066552A1 (en) * | 2022-09-29 | 2024-04-04 | 浙江联宜电机有限公司 | Mid-drive electric motor for electric power-assisted bicycle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021044157A1 (en) * | 2019-09-04 | 2021-03-11 | Freeflow Technologies Limited | Strain wave gears, vehicle drive systems including same and methods of torque and cadence measurement |
| EP3822154A1 (en) * | 2019-11-15 | 2021-05-19 | ZhuHai KwunHing Machinery & Electronic Co. Ltd. | Harmonic drive system for pedal electric cycle |
| JP7121095B2 (en) | 2019-11-15 | 2022-08-17 | 珠海市鈞興機電有限公司 | Electric assist bicycle harmonic drive system |
| JP2021079940A (en) * | 2019-11-15 | 2021-05-27 | 珠海市鈞興機電有限公司 | Electric assisted bicycle harmonic drive system |
| WO2021151234A1 (en) * | 2020-01-30 | 2021-08-05 | 深圳市喜德盛自行车股份有限公司 | Smart middle harmonic gear motor |
| CN111315647A (en) * | 2020-01-30 | 2020-06-19 | 深圳市喜德盛自行车股份有限公司 | Intelligent middle harmonic speed reducing motor |
| CN111232120A (en) * | 2020-03-13 | 2020-06-05 | 珠海市钧兴机电有限公司 | Different-shaft type automatic stepless hybrid speed change system and power-assisted bicycle |
| WO2021179366A1 (en) * | 2020-03-13 | 2021-09-16 | 珠海市钧兴机电有限公司 | Heteroaxial hybrid continuously variable transmission system, and power-assisted bicycle |
| CN111846096A (en) * | 2020-07-09 | 2020-10-30 | 大川电机科技(江苏)有限公司 | Torque sensor, middle-placed motor and electric power-assisted bicycle |
| CN114379692A (en) * | 2020-10-06 | 2022-04-22 | 盟英科技股份有限公司 | Harmonic speed reduction module, power device, power output system and electric bicycle |
| WO2023015739A1 (en) * | 2021-08-13 | 2023-02-16 | 中国科学院宁波材料技术与工程研究所 | Rotary driving device and method for correcting system error of rotary driving device |
| TWI806175B (en) * | 2021-09-30 | 2023-06-21 | 德禮實業有限公司 | Dual motor drives for vehicles |
| US20230182325A1 (en) * | 2021-12-10 | 2023-06-15 | Coretronic Mems Corporation | Joint actuator of robot |
| CN114475896A (en) * | 2022-03-21 | 2022-05-13 | 林国尊 | Dual-motor driving device for carrier |
| WO2024066552A1 (en) * | 2022-09-29 | 2024-04-04 | 浙江联宜电机有限公司 | Mid-drive electric motor for electric power-assisted bicycle |
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