CN211844790U - Transmission device of electric bicycle - Google Patents
Transmission device of electric bicycle Download PDFInfo
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- CN211844790U CN211844790U CN202020054899.6U CN202020054899U CN211844790U CN 211844790 U CN211844790 U CN 211844790U CN 202020054899 U CN202020054899 U CN 202020054899U CN 211844790 U CN211844790 U CN 211844790U
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Abstract
The utility model provides an electric bicycle transmission, including the transmission cover, be provided with the motor in the transmission cover, be fixed with the main drive wheel on the motor power output shaft, the lateral part of main drive wheel is provided with the driven driving wheel of meshing, axle center department from the driving wheel is provided with the horizontally driven shaft, the driven shaft is connected with the chain wheel on hand, the top of main drive wheel is provided with the driven auxiliary drive wheel of meshing, the center of auxiliary drive wheel is provided with clutch bearing, be provided with the axis in clutch bearing's the shaft hole, electronic crank and the pedal of riding bicycle are connected at centraxonial both ends. The transmission device can enable manual driving and motor driving to be mutually noninterfere, has higher transmission ratio during manual driving, and can drive the electric bicycle to move forwards with very small force.
Description
Technical Field
The utility model relates to an electric bicycle's transmission especially relates to a transmission.
Background
In order to avoid the problem that the electric bicycle cannot move forwards when the battery is not powered, two sets of driving systems are usually arranged, namely, the electric bicycle is driven by a motor when the battery is powered sufficiently and driven manually when the battery is powered insufficiently. In the existing design, the manual drive and the motor drive are generally in a coaxial design, so that the electric bicycle can be driven to move forwards by large force when being manually treaded.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that exists among the background art, the utility model provides an electric bicycle transmission, this transmission can make artifical drive and motor drive mutually noninterfere, has higher drive ratio during artifical transmission, just can order about electric bicycle with very little power and move ahead.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides an electric bicycle transmission, includes the transmission cover, is provided with the motor in the transmission cover, and the motor has power output shaft, is fixed with the main drive wheel on the power output shaft, and the lateral part of main drive wheel is provided with from the driving wheel, main drive wheel and follow driving wheel intermeshing transmission, its characterized in that: a horizontal driven shaft is arranged at the axis of the driven wheel, a chain wheel is tightly connected to the driven shaft, an auxiliary driving wheel is arranged above the main driving wheel and is in meshing transmission with the main driving wheel, a clutch bearing is arranged at the center of the auxiliary driving wheel, a middle shaft is arranged in a shaft hole of the clutch bearing, and two ends of the middle shaft are connected with a crank and a pedal of the electric bicycle.
The power output shaft is fixed with the main driving wheel through a fixed sleeve.
The central axis of the driven wheel and the central axis of the main driving wheel are both positioned in a horizontal plane.
The driven shaft is provided with a rectangular notch, a connecting key is arranged in the rectangular notch, and the chain wheel is tightly connected to the driven shaft through the connecting key.
The outer circumference of the chain wheel is provided with chain wheel teeth, a transmission chain is sleeved on the chain wheel teeth, and the chain wheel is in transmission connection with the rear wheel through the transmission chain.
The radius of the auxiliary driving wheel is 2.5 times of the radius of the main driving wheel.
The utility model has the advantages that: the transmission device can keep the operation of electric and manpower which do not interfere with each other, and when the power is off, the transmission ratio of manual treading is high, and the electric bicycle can be driven to move forwards by small force.
Drawings
The present invention will be further explained with reference to the accompanying drawings
Fig. 1 is a schematic structural view of the transmission device of the present invention;
Detailed Description
The invention will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings:
example 1
As shown in fig. 1, the transmission device for the electric bicycle comprises a transmission cover 1, wherein a motor 20 is arranged in the transmission cover 1, the motor 20 is provided with a power output shaft 21, a main driving wheel 30 is fixed on the power output shaft 21 through a fixing sleeve 22, a driven wheel 40 is arranged on the side part of the main driving wheel 30, and the central axis of the driven wheel 40 and the central axis of the main driving wheel 30 are both located in a horizontal plane. The main drive wheel 30 is in meshing transmission with the driven wheel 40.
The driven wheel 40 is provided with a horizontal driven shaft 41 at the axis, the driven shaft 41 is provided with a rectangular notch, a connecting key 42 is arranged in the rectangular notch, the driven shaft 41 is tightly connected with a chain wheel 60 through the rectangular notch and the connecting key 42, the outer circumference of the chain wheel 60 is provided with chain wheel teeth, the chain wheel teeth are sleeved with a transmission chain 50, and the chain wheel 60 is in transmission connection with the rear wheel through the transmission chain 50.
An auxiliary driving wheel 10 is arranged above the main driving wheel 30, the auxiliary driving wheel 10 is in meshed transmission with the main driving wheel 30, and the radius of the auxiliary driving wheel 10 is 2.5 times of that of the main driving wheel 30. The center of the auxiliary driving wheel 10 is provided with a clutch bearing 12, a middle shaft 11 is arranged in a shaft hole of the clutch bearing 12, and two ends of the middle shaft 11 are connected with a crank and a pedal of the electric bicycle.
When the electric bicycle is sufficiently powered, the motor 20 operates, the power output shaft 21 drives the main driving wheel 30 to rotate, the main driving wheel 30 drives the driven wheel 40 to rotate, the driven wheel 40 rotates to drive the chain wheel 60 to rotate, and the chain wheel 60 rotates to drive the rear wheel of the electric bicycle to rotate through the transmission chain 50, so that the clutch bearing 12 keeps a clutch state in the process of electrically driving the electric bicycle to move forward, namely the auxiliary driving wheel 10 rotates, but the middle shaft 11 does not rotate, namely the crank and the pedal do not rotate at the moment.
When the electric power of the electric bicycle is insufficient, the clutch bearing 12 keeps a joint state, a rider treads on a pedal to drive the middle shaft 11 to rotate by manpower, the middle shaft 11 rotates to drive the auxiliary driving wheel 10 to rotate, the auxiliary driving wheel 10 drives the main driving wheel 30 to rotate, and then the rear wheel is driven to rotate through the transmission of the driven wheel 40 and the chain wheel 60.
The transmission device can keep the operation of electric and manpower which do not interfere with each other, and when the power is off, the transmission ratio of manual treading is high, and the electric bicycle can be driven to move forwards by small force.
Those skilled in the art will recognize that a wide variety of modifications, alterations, and combinations can be made with respect to the above described embodiments without departing from the scope of the invention, and that such modifications, alterations, and combinations are to be viewed as being within the ambit of the inventive concept.
Claims (6)
1. The utility model provides an electric bicycle transmission, includes the transmission cover, is provided with the motor in the transmission cover, and the motor has power output shaft, is fixed with the main drive wheel on the power output shaft, and the lateral part of main drive wheel is provided with from the driving wheel, main drive wheel and follow driving wheel intermeshing transmission, its characterized in that:
a horizontal driven shaft is arranged at the axis of the driven wheel, a chain wheel is tightly connected to the driven shaft, an auxiliary driving wheel is arranged above the main driving wheel and is in meshing transmission with the main driving wheel, a clutch bearing is arranged at the center of the auxiliary driving wheel, a middle shaft is arranged in a shaft hole of the clutch bearing, and two ends of the middle shaft are connected with a crank and a pedal of the electric bicycle.
2. The transmission of claim 1, wherein the power take-off shaft is secured to the main drive wheel by a retaining sleeve.
3. An electric bicycle transmission as defined in claim 1, wherein the central axis of the driven wheel and the central axis of the main drive wheel are both in a horizontal plane.
4. The transmission for electric bicycles of claim 1, wherein the driven shaft has a rectangular notch, and the rectangular notch has a connection key, and the chain wheel is tightly connected to the driven shaft through the connection key.
5. The transmission device for electric bicycles of claim 1, wherein the outer circumference of the chain wheel is provided with chain wheel teeth, the chain wheel teeth are sleeved with a transmission chain, and the chain wheel is in transmission connection with the rear wheel through the transmission chain.
6. An electric bicycle transmission as defined in claim 1, wherein the auxiliary drive wheel has a radius 2.5 times the radius of the main drive wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020054899.6U CN211844790U (en) | 2020-01-13 | 2020-01-13 | Transmission device of electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020054899.6U CN211844790U (en) | 2020-01-13 | 2020-01-13 | Transmission device of electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211844790U true CN211844790U (en) | 2020-11-03 |
Family
ID=73213397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020054899.6U Active CN211844790U (en) | 2020-01-13 | 2020-01-13 | Transmission device of electric bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211844790U (en) |
-
2020
- 2020-01-13 CN CN202020054899.6U patent/CN211844790U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |