CN221138494U - Supporting structure of hub driving device - Google Patents
Supporting structure of hub driving device Download PDFInfo
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- CN221138494U CN221138494U CN202323057828.4U CN202323057828U CN221138494U CN 221138494 U CN221138494 U CN 221138494U CN 202323057828 U CN202323057828 U CN 202323057828U CN 221138494 U CN221138494 U CN 221138494U
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- 230000009467 reduction Effects 0.000 claims abstract description 62
- 230000005540 biological transmission Effects 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 abstract description 3
- 230000007246 mechanism Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009194 climbing Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
The utility model discloses a supporting structure of a hub driving device, which comprises a driving motor and a transmission shell, wherein the driving motor is arranged on the supporting structure; the driving motor is positioned in the shell and comprises a stator shell, a rotor and a motor shaft, wherein one end of the motor shaft extends out of the stator shell and is connected with a driving gear; a reduction gear set is arranged on one side of the driving gear, a driven gear ring is arranged on the inner side of the transmission shell, and the driving gear is connected with the driven gear ring through the reduction gear set; one end fixedly connected with first support frame at stator casing, the other end fixedly connected with second support frame is equipped with first back shaft and second back shaft respectively on first support frame and second support frame, first back shaft and second back shaft stretch out from the both ends of drive shell respectively to rotate with drive shell and be connected. The utility model has simple structure and convenient installation, can effectively support the driving device and can effectively ensure the stability of the driving device.
Description
Technical Field
The utility model relates to the technical field of electric two-wheel vehicle driving, in particular to a supporting structure of a wheel hub driving device.
Background
The electric two-wheel vehicle is used as a convenient and economical riding tool and is widely applied to the aspect of daily traffic travel of people. The existing electric two-wheeled vehicle mainly adopts a side-hanging/middle-arranged motor or a hub motor as a driving mechanism to provide driving force. The hub motor, also called built-in wheel motor, is characterized in that the power, transmission and braking devices are integrated into the hub, so that the mechanical part of the electric vehicle is greatly simplified; however, the hub motor directly transmits the torque to the rear wheel through the outer rotor, so that the output torque of the rear wheel is limited by the power of the motor, and the climbing capacity is poor; under the working condition of heavy load, the motor heats seriously, and the motor is easy to burn. The side-hung/middle-arranged motor transmits power to the rear wheel shaft after passing through the speed reducing mechanism, and although the climbing capacity of the electric vehicle can be improved, the side-hung motor is arranged on one side of the frame, so that the side-hung motor integrally protrudes out of one side of the electric vehicle after being arranged, the occupied space of the motor and the speed reducing mechanism is very large, the gravity center of the whole vehicle is unstable easily, and the appearance is attractive. The existing middle motor is arranged between rear forks of the two-wheel vehicle, and although the volume of the two-wheel vehicle can be reduced, the middle motor needs an independent transmission mechanism to transmit power to a rear wheel hub or a shaft, so that the whole structure is complex, the requirement on the installation space is high, and the power transmission efficiency can be affected.
Therefore, the inventor designs a new driving device, the driving motor is arranged in the transmission shell, then the driving motor drives the transmission shell, and a speed reducing mechanism is integrated in the transmission shell, so that the output torque is increased; thus, after the transmission housing is connected with the hub of the two-wheel vehicle, high torque output can be realized. However, the transmission housing needs to rotate so as to transmit power to the frame, and the existing driving device is not suitable for driving devices designed by the inventor because the transmission housing is fixed with the frame in the installation process and outputs power through a shaft.
Therefore, how to continue to design a supporting structure suitable for the driving device designed by the inventor so as to stably and reliably support the driving device.
Disclosure of utility model
The utility model aims to solve the problems in the prior art and provide a supporting structure of a hub driving device, which has the advantages of simple structure and convenient installation, can effectively support the driving device and can effectively ensure the stability of the driving device.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: a support structure of a hub driving device comprises a driving motor and a transmission shell; the driving motor is positioned in the shell and comprises a stator shell, a rotor and a motor shaft, wherein one end of the motor shaft extends out of the stator shell and is connected with a driving gear; a reduction gear set is arranged on one side of the driving gear, a driven gear ring is arranged on the inner side of the transmission shell, and the driving gear is connected with the driven gear ring through the reduction gear set; the method is characterized in that: one end of the stator shell, which is close to the driving gear, is fixedly connected with a first support frame, and the other end of the stator shell is fixedly connected with a second support frame, wherein the first support frame is positioned at one side, which is away from the stator shell, of the driving gear; the first support frame and the second support frame are respectively provided with a first support shaft and a second support shaft, the first support shaft and the second support shaft respectively extend out of two ends of the transmission shell and are rotationally connected with the transmission shell, and the axial leads of the first support shaft, the second support shaft and the motor shaft are overlapped.
Further, a reduction output gear is rotatably sleeved on the first support shaft, the reduction output gear is a duplex gear, the reduction output gear comprises a reduction driven gear and a power output gear, the driving gear is meshed with the reduction driven gear after passing through a reduction gear set, and the driven gear is sleeved on the power output gear and meshed with the power output gear.
Further, the reduction gear set is connected with the stator shell through a reduction shaft, wherein one end of the reduction shaft is connected with the stator shell, and the other end of the reduction shaft is connected with the stator shell through a third support frame; the reduction gear set comprises a reduction input gear and a reduction transmission gear, wherein the reduction input gear is meshed with the driving gear, and the reduction transmission gear is meshed with the reduction driven gear.
Further, the first support frame is in a cylindrical structure, is covered on the driving gear, and is outwards folded at the open end to form a connecting flanging and is connected with the stator shell through the flanging; a notch is formed on one side of the first support frame, which is close to the reduction gear set, and the reduction input gear is meshed with the driving gear after extending into the first support frame from the notch; the first support shaft is connected with the closed end of the first support frame.
Further, the second support frame comprises a support ring and a support plate, a space is reserved between the support plate and the end face of the stator shell, and the second support shaft is connected with the support plate; the supporting ring is connected with the transmission shell through a bearing, and a wire hole is formed in the supporting plate for the wires of the driving motor to extend out.
Further, the first support shaft and the second support shaft are formed to be flat on opposite sides of a portion of the transmission housing outside.
Compared with the prior art, the utility model has the following advantages: the structure is simpler, the two support shafts are directly and fixedly connected with the motor, and then extend out of the transmission shell to be connected with the frame, so that the assembly is more convenient and quicker; meanwhile, the axial lead of the two support shafts coincides with the axial lead of the motor shaft and the rotation central line of the transmission shell, so that the stability of the whole driving device in the working process can be greatly improved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is an exploded view of fig. 1.
Fig. 3 is a schematic view of the drive device with the transmission housing removed.
Fig. 4 is an exploded view of fig. 3.
Fig. 5 is a schematic view of a mounting structure of the second support frame.
Fig. 6 is a schematic view of the mounting structure of the driving device.
In the figure: 1-driving motor, 2-driving gear, 31-deceleration input gear, 32-deceleration transmission gear, 4-deceleration shaft, 5-first support frame, 61-support ring, 62-support plate, 7-first support shaft, 8-second support shaft, 91-deceleration driven gear, 92-power output gear, 101-first shell, 102-second shell, 11-driven gear ring, 12-third support frame, 13-hub, 14-rear fork.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
Examples: referring to fig. 1 to 5, a support structure of a hub driving device includes a driving motor 1 and a transmission housing. The drive motor 1 is located in the housing and comprises a stator housing, a rotor and a motor shaft, wherein one end of the motor shaft extends out of the stator housing and is connected with a driving gear 2. A reduction gear set is arranged on one side of the driving gear 2, a driven gear ring 11 is arranged on the inner side of the transmission shell on the same axis, and the driving gear 2 is connected with the driven gear ring 11 through the reduction gear set. As an embodiment, the driving motor 1 adopts a permanent magnet motor, a coil winding is installed in a stator housing, and a permanent magnet is installed on a rotor.
One end of the stator housing, which is close to the driving gear 2, is fixedly connected with a first supporting frame 5, and the other end of the stator housing is fixedly connected with a second supporting frame, wherein the first supporting frame 5 is positioned on one side, which is away from the stator housing, of the driving gear 2. The first support frame 5 and the second support frame are respectively provided with a first support shaft 7 and a second support shaft 8, the first support shaft 7 and the second support shaft 8 respectively extend out of two ends of the transmission shell and are rotationally connected with the transmission shell, and the axial leads of the first support shaft 7, the second support shaft 8 and the motor shaft are coincident. In practice, the shell comprises a first shell 101 and a second shell 102 which are connected together, and the whole shell is in a cylinder structure; the first support shaft 7 and the second support shaft 8 pass through the first shell 101 and the second shell 102 respectively and are rotationally connected with the first shell 101 and the second shell 102; in this way, the assembly is easier.
As an embodiment, a reduction output gear is rotatably sleeved on the first supporting shaft 7, the reduction output gear is a duplex gear, the reduction output gear comprises a reduction driven gear 91 and a power output gear 92, the driving gear 2 is meshed with the reduction driven gear 91 through a reduction gear set, the driven gear ring 11 is sleeved on the power output gear 92 and meshed with the power output gear 92, and the driven gear ring 11 coincides with the axis line of the power output gear 92. Therefore, the rotation center line (axial lead) of the transmission housing is coincident with the axial lead of the motor shaft, and concentricity of the support shaft and the transmission housing is ensured, so that stability in the rotation process is better.
In the implementation process, the reduction gear set is connected with the stator shell through a reduction shaft 4, wherein one end of the reduction shaft 4 is connected with the stator shell, and the other end of the reduction shaft is connected with the stator shell through a third support frame 12; the third support frame 12 is U-shaped, and two ends of an opening side of the third support frame are distributed on two opposite sides of the reduction gear set and fixedly connected with an end cover of the stator housing, and the reduction shaft 4 is connected with a closed end of the third support frame 12. The reduction gear set includes a reduction input gear 31 and a reduction transmission gear 32, wherein the reduction input gear 31 is engaged with the driving gear 2, and the reduction transmission gear 32 is engaged with the reduction driven gear 91.
In implementation, the first supporting frame 5 is in a cylindrical structure, is covered on the driving gear 2, and has an open end which is turned outwards to form a connecting flanging and is connected with the stator shell through the flanging. A notch is formed on one side of the first support frame 5 close to the reduction gear set, and the reduction input gear 31 stretches into the first support frame 5 from the notch and then is meshed with the driving gear 2; the first supporting shaft 7 is connected with the closed end of the first supporting frame 5. Thus, the mounting stability of the first support shaft 7 can be effectively improved, and concentricity of the first support shaft 7 and the motor shaft can be ensured. In the concrete implementation, the first supporting shaft 7 and the first supporting frame 5 are integrally formed, so that the overall strength is higher, the supporting stability can be improved, and the assembly is convenient. The second support frame comprises a support ring 61 and a support plate 62, a space is arranged between the support plate 62 and the end face of the stator housing, and the second support shaft 8 is connected with the support plate 62. One end of the supporting ring 61 is attached to the end face of the stator housing, and the other end extends out of the transmission housing and is rotationally connected with the transmission housing through a bearing. A wire hole is formed in the support plate 62 to allow the wires of the driving motor 1 to extend. In practice, the ends of the coil windings are connected to conductors which extend from the stator housing at positions corresponding to the support rings 61 and which are connected to the conductive plugs after passing through the wire holes.
As optimization, the opposite sides of the part of the first support shaft 7 and the second support shaft 8, which are positioned outside the transmission shell, are formed into planes; this is more convenient for positioning with the frame (rear fork 14) and for connection and fixation by nuts.
Referring to fig. 6, in actual assembly, the present driving device is usually connected to a hub 13 of a two-wheeled vehicle (rear wheel), and further includes a rear fork 14, the rear side having two fork arms, and fork grooves formed at the ends of the two fork arms, respectively, and being interposed on the two support shafts through the fork grooves. Wherein, two sides of the two support shafts, which are close to two side walls of the fork groove, are formed into planes and are attached to the two side walls of the fork groove; in this way, the mounting of the entire driving device and the position between the rear fork 14 can be better fixed, so that the mounting effect is improved, and the mounting is more convenient.
The utility model has simpler structure, the two supporting shafts are directly and fixedly connected with the motor, and then extend out of the transmission shell to be connected with the frame, so that the assembly is more convenient and quicker; meanwhile, the axial lead of the two support shafts coincides with the axial lead of the motor shaft and the rotation central line of the transmission shell, so that the stability of the whole driving device in the working process can be greatly improved.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the technical solution, and those skilled in the art should understand that modifications and equivalents may be made to the technical solution of the present utility model without departing from the spirit and scope of the present utility model, and all such modifications and equivalents are included in the scope of the claims.
Claims (6)
1. A support structure of a hub driving device comprises a driving motor and a transmission shell; the driving motor is positioned in the shell and comprises a stator shell, a rotor and a motor shaft, wherein one end of the motor shaft extends out of the stator shell and is connected with a driving gear; a reduction gear set is arranged on one side of the driving gear, a driven gear ring is arranged on the inner side of the transmission shell, and the driving gear is connected with the driven gear ring through the reduction gear set; the method is characterized in that: one end of the stator shell, which is close to the driving gear, is fixedly connected with a first support frame, and the other end of the stator shell is fixedly connected with a second support frame, wherein the first support frame is positioned at one side, which is away from the stator shell, of the driving gear; the first support frame and the second support frame are respectively provided with a first support shaft and a second support shaft, the first support shaft and the second support shaft respectively extend out of two ends of the transmission shell and are rotationally connected with the transmission shell, and the axial leads of the first support shaft, the second support shaft and the motor shaft are overlapped.
2. A support structure for a hub drive according to claim 1, wherein: the first support shaft is rotatably sleeved with a speed reduction output gear which is a duplex gear and comprises a speed reduction driven gear and a power output gear, the driving gear is meshed with the speed reduction driven gear after passing through the speed reduction gear set, and the driven gear is sleeved on the power output gear and meshed with the power output gear.
3. A support structure for a hub drive according to claim 2, wherein: the speed reduction gear set is connected with the stator shell through a speed reduction shaft, one end of the speed reduction shaft is connected with the stator shell, and the other end of the speed reduction shaft is connected with the stator shell through a third support frame; the reduction gear set comprises a reduction input gear and a reduction transmission gear, wherein the reduction input gear is meshed with the driving gear, and the reduction transmission gear is meshed with the reduction driven gear.
4. A support structure for a hub drive according to claim 2, wherein: the first support frame is in a cylindrical structure, is covered on the driving gear, and is outwards turned at the open end to form a connecting flanging and is connected with the stator shell through the flanging; a notch is formed on one side of the first support frame, which is close to the reduction gear set, and the reduction input gear is meshed with the driving gear after extending into the first support frame from the notch; the first support shaft is connected with the closed end of the first support frame.
5. A support structure for a hub drive according to claim 1, wherein: the second support frame comprises a support ring and a support plate, a space is reserved between the support plate and the end face of the stator shell, and the second support shaft is connected with the support plate; the supporting ring is connected with the transmission shell through a bearing, and a wire hole is formed in the supporting plate for the wires of the driving motor to extend out.
6. A support structure for a hub drive according to claim 1, wherein: the first support shaft and the second support shaft are formed into planes on two opposite sides of the portion, located outside the transmission housing, of the first support shaft and the second support shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323057828.4U CN221138494U (en) | 2023-11-13 | 2023-11-13 | Supporting structure of hub driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323057828.4U CN221138494U (en) | 2023-11-13 | 2023-11-13 | Supporting structure of hub driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221138494U true CN221138494U (en) | 2024-06-14 |
Family
ID=91421239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323057828.4U Active CN221138494U (en) | 2023-11-13 | 2023-11-13 | Supporting structure of hub driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221138494U (en) |
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2023
- 2023-11-13 CN CN202323057828.4U patent/CN221138494U/en active Active
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| GR01 | Patent grant | ||
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