CN214420649U - Electric vehicle, bottom fork and driving mechanism - Google Patents
- ️Tue Oct 19 2021
CN214420649U - Electric vehicle, bottom fork and driving mechanism - Google Patents
Electric vehicle, bottom fork and driving mechanism Download PDFInfo
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Publication number
- CN214420649U CN214420649U CN202023222240.6U CN202023222240U CN214420649U CN 214420649 U CN214420649 U CN 214420649U CN 202023222240 U CN202023222240 U CN 202023222240U CN 214420649 U CN214420649 U CN 214420649U Authority
- CN
- China Prior art keywords
- electric vehicle
- supporting arm
- speed reducing
- shaft
- reducing mechanism Prior art date
- 2020-12-28 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.)
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Abstract
The utility model provides an electric vehicle, a bottom fork and a driving mechanism, wherein the driving mechanism comprises a supporting arm, a hub shaft, a driving motor and a speed reducing mechanism; the supporting arm is provided with an installation cavity, and the speed reducing mechanism is arranged on the supporting arm; the stator of the driving motor is fixed in the mounting cavity, the rotor of the driving motor is fixed on the input shaft of the speed reducing mechanism, and the hub shaft is in spline connection or fixed connection with the output part of the speed reducing mechanism. The bottom fork also comprises a second supporting arm, the second supporting arm and the supporting arm are oppositely arranged, the upper ends of the second supporting arm and the supporting arm are mutually fixed, and one end of the hub shaft is rotatably connected to the second supporting arm; the bottom fork is applied to the electric vehicle. The utility model provides a power that exists is not enough among the prior art, problem that weight is big.
Description
Technical Field
The utility model relates to an electric motor car technical field especially relates to electric motor car, electric motor car chain stay and electric motor car actuating mechanism.
Background
The national standard of electric vehicles implemented in 2010, which refers to electric bicycles with a speed of more than 40 kilograms and more than 20 kilometers per hour, is classified as light electric motorcycles or electric motorcycles into the category of motor vehicles. Most electric vehicles in the market do not meet the standard. Therefore, many manufacturers are pursuing lightweight, compact structures; the motor, the transmission structure, the supporting structure and the like of smaller models are adopted to realize light weight. Because of the limitation of the highest speed and power, the motor specification is small, the electric vehicle can be used in plain areas, but the power is insufficient when the electric vehicle arrives at mountainous and hilly areas with uneven roads; if more speed reducing mechanisms are arranged to ensure power, the problem of asymmetrical structure is easily caused; and in order to ensure the integral strength, the occupied space is large, the weight is large, and the total weight is easy to exceed the range.
SUMMERY OF THE UTILITY MODEL
Not enough to exist among the prior art, the utility model provides an electric motor car actuating mechanism and electric motor car chain stay and electric motor car including this actuating mechanism, it has solved the electric motor car power that exists among the prior art not enough, problem that weight is big.
According to an embodiment of the present invention, there is provided an electric vehicle driving mechanism, which includes a support arm, a hub axle, a driving motor, and a speed reduction mechanism; the supporting arm is provided with an installation cavity, and the speed reducing mechanism is arranged on the supporting arm; the stator of the driving motor is fixed in the mounting cavity, the rotor of the driving motor is fixed on the input shaft of the speed reducing mechanism, and the hub shaft is in spline connection or fixed connection with the output part of the speed reducing mechanism.
Still provided a chain stay including above-mentioned actuating mechanism, it still includes the second support arm, second support arm and support arm set up relatively and the upper end reciprocal anchorage, wheel hub axle one end is rotated and is connected on the second support arm.
An electric vehicle comprising the chain stay is also provided.
The technical principle of the utility model is that: the motor and the speed reducing mechanism are directly arranged on the mounting cavity, so that the stability of the motor and the speed reducing mechanism is improved, the shell and the connecting parts are reduced, and the overall quality and the occupied space are reduced. Meanwhile, the strength of the supporting arm is matched with the speed reducing mechanism, so that the torque can be increased by more than two thirds by adopting a high-speed motor under the condition of same power and stability, and the power requirement of the high-speed motor on the plain, mountain land and hilly land can be met.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model discloses utilize support arm structure itself with the integrated installation of motor and reduction gears, reduced installation space and mounting structure, reduced holistic weight. Meanwhile, the working torque is increased by adopting the high-speed motor to be matched with the speed reducing mechanism, and the requirement of the terrain is better met.
Drawings
Fig. 1 is the external structure schematic diagram of the embodiment of the present invention with a hub.
Fig. 2 is a schematic structural diagram of the speed reducing mechanism of the present invention.
Fig. 3 is the schematic diagram of the internal structure of the motor and the speed reducing mechanism of the present invention.
In the above drawings: 1. a support arm; 2. a drive motor; 3. a speed reduction mechanism; 4. a hub shaft; 5. a second support arm; 21. A rotor; 31. an input shaft; 32. a drive shaft; 33. an output wheel; 34. a first drive gear; 35. a second transmission gear; 41. a one-way device.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.
As shown in fig. 1-3, an embodiment of the present invention provides a driving mechanism for an electric vehicle, which includes a supporting
arm1, a
hub axle4, a
driving motor2 and a
speed reducing mechanism3; the supporting
arm1 is provided with an installation cavity, and the
speed reducing mechanism3 is arranged on the supporting
arm1; the stator of the
driving motor2 is fixed in the installation cavity, the
rotor21 of the
driving motor2 is fixed on the
input shaft31 of the
speed reducing mechanism3, and the
hub shaft4 is in spline connection or fixed connection with the output part of the
speed reducing mechanism3.
The embodiment of the utility model provides a still provide an electric motor car chain stay including above-mentioned actuating mechanism, it still includes
second support arm5, and
second support arm5 and
support arm1 set up relatively and upper end reciprocal anchorage, 4 one ends of wheel hub axle are rotated and are connected on
second support arm5.
According to the above technical scheme, the utility model discloses a theory of operation does: the
input shaft31 of the motor-driven
reduction mechanism3 is output from the
hub shaft4 via the
reduction mechanism3; and ultimately drive the hub in rotation.
Further, as shown in fig. 2, the
reduction mechanism3 includes an
output wheel33; the
output wheel33 is rotatably connected to the supporting
arm1, and the outer side surface of the
output wheel33 is provided with a transmission gear in transmission connection with the
input shaft31; the
output wheel33 is provided with a splined hole in the middle, and one end of the
hub shaft4 is in spline fit with the splined hole. The
output wheel33 is connected with the
support arm1 in a rotating way, and can be directly connected with a bearing in a protruding way in the axial direction of the
output wheel33; the rotary connection can also be realized through a connecting shaft with a bearing. The
output wheel33 is arranged next to the
support arm1 and is not supported at both ends simultaneously, which saves a lot of axial space, and the
hub axle4 is splined directly in the splined hole in its center, so that the
reduction mechanism3 does not take up too much space between the two support arms. Similarly, a
transmission shaft32 is arranged between the
input shaft31 and the
output wheel33, the
transmission shaft32 is provided with a
first transmission gear34 and a
second transmission gear35, and the
first transmission gear34 is meshed with the
input shaft31; the
second transmission gear35 is meshed with the
output wheel33, and the
second transmission gear35 is positioned between the
first transmission gear34 and the supporting
arm1. The number of teeth of the
first transmission gear34 is greater than the number of teeth of the
second transmission gear35 and the gear on the
input shaft31; the number of teeth of the
second transmission gear35 is less than that of the transmission teeth of the
output gear33. The
input shaft31, the
output wheel33 and the
transmission shaft32 form a simple three-stage
speed reducing mechanism3; and the
second transmission gear35 is arranged close to the supporting
arm1, so that the design of the speed reducing wheel and the supporting
arm1 is more facilitated. The
hub axle4 is provided with a one-
way clutch41. The specific arrangement of the
isolator41 is adaptable by those skilled in the art with reference to the utility model patent application No. 2018217974993. In the utility model, the protruding part of the
transmission shaft32 just occupies a little radial space of the
hub axle4, and this space can just be used for setting the
isolator41. The
isolator41 can effectively prevent the damage of the inertia effect of the electric vehicle to the motor and the
speed reducing mechanism3. The
reduction mechanism3 further comprises a housing, part of which coincides with the
support arm1. The speed reducer shell is used for protecting an internal structure, an internal rotating shaft is directly connected with the supporting
arm1 in a rotating mode, and the supporting
arm1 is a part of the shell, so that stable support can be achieved, and occupation of an axial space is reduced.
Finally, the electric vehicle comprising the bottom fork has strong power and is suitable for the climbing requirements of mountainous and hilly lands.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (8)
1. An electric vehicle drive mechanism, characterized in that: comprises a supporting arm, a hub shaft, a driving motor and a speed reducing mechanism;
the supporting arm is provided with an installation cavity, and the speed reducing mechanism is arranged on the supporting arm; the stator of the driving motor is fixed in the mounting cavity, the rotor of the driving motor is fixed on the input shaft of the speed reducing mechanism, and the hub shaft is connected with the output part of the speed reducing mechanism in a spline mode or in a fixed mode.
2. A drive mechanism for an electric vehicle as recited in claim 1, wherein said speed reducing mechanism includes an output wheel; the output wheel is rotatably connected to the supporting arm, and the outer side surface of the output wheel is provided with a transmission gear in transmission connection with the input shaft; the middle of the output wheel is provided with a spline hole, and one end of the hub shaft is in spline fit with the spline hole.
3. The drive mechanism for an electric vehicle according to claim 2, wherein a transmission shaft is provided between the input shaft and the output wheel, the transmission shaft is provided with a first transmission gear and a second transmission gear, and the first transmission gear is engaged with the input shaft; the second transmission gear is meshed with the output wheel and is positioned between the first transmission gear and the supporting arm.
4. A drive mechanism for an electric vehicle as claimed in claim 3, wherein the number of teeth of the first drive gear is greater than the number of teeth of the second drive gear and the gear on the input shaft; the number of teeth of the second transmission gear is smaller than that of the transmission teeth of the output gear.
5. The drive mechanism for an electric vehicle of claim 4, wherein the retarding mechanism further comprises a housing, portions of the housing being coincident with the support arms.
6. The drive mechanism for electric vehicles according to any one of claims 1-5, wherein a one-way clutch is provided on the hub axle.
7. An electric vehicle bottom fork, characterized in that, includes the electric vehicle actuating mechanism of any one of claims 1-6, further includes a second support arm, the second support arm and the support arm are oppositely arranged and the upper ends are fixed to each other, one end of the hub shaft is rotatably connected to the second support arm.
8. An electric vehicle comprising the electric vehicle chain stay of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023222240.6U CN214420649U (en) | 2020-12-28 | 2020-12-28 | Electric vehicle, bottom fork and driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023222240.6U CN214420649U (en) | 2020-12-28 | 2020-12-28 | Electric vehicle, bottom fork and driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214420649U true CN214420649U (en) | 2021-10-19 |
Family
ID=78053167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023222240.6U Active CN214420649U (en) | 2020-12-28 | 2020-12-28 | Electric vehicle, bottom fork and driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214420649U (en) |
-
2020
- 2020-12-28 CN CN202023222240.6U patent/CN214420649U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 2021-10-19 | GR01 | Patent grant | |
| 2021-10-19 | GR01 | Patent grant |