CN212447099U - Driving structure of driving wheel of electric vehicle - Google Patents
Driving structure of driving wheel of electric vehicle Download PDFInfo
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- CN212447099U CN212447099U CN202020233293.9U CN202020233293U CN212447099U CN 212447099 U CN212447099 U CN 212447099U CN 202020233293 U CN202020233293 U CN 202020233293U CN 212447099 U CN212447099 U CN 212447099U
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Abstract
The utility model discloses a drive structure of drive wheel of electric motor car, include: the device comprises a driving motor, a driving induction element for controlling the driving motor, a planetary reducer, a planet carrier, a connecting frame and a driving wheel; a sealing baffle is arranged outside one end of a motor shell of the driving motor; a lubricating space is formed between the planetary speed reducer and the planetary carrier through a connecting structure; one side of the driving bearing, which is far away from the connecting frame, is provided with a first annular sealing element which is used for sealing the sealed space so as to prevent external dust, water, oil stain and the like from entering the sealed space; a sealing assembly for sealing the lubricating space to prevent grease from leaking into the motor shell from the lubricating space is arranged between the box body and the motor shell. The driving structure of the driving wheel of the electric vehicle has simple and reliable sealing structure, higher sealing stability and more reliable power output.
Description
Technical Field
The utility model relates to a drive structure of drive wheel of electric motor car.
Background
The driving structure of the driving wheel for driving the small-sized electrically-driven electric vehicle has the advantages that the signal sensing element is arranged in the motor shell, the influence of the working environment in the motor is easily caused, the stability is poor, and the service life is not long. Meanwhile, the driving structure adopts a plurality of sealing elements to respectively seal the speed reducer, the connecting frame and the rotating bearing for rotatably supporting the driving wheel, and the sealing structure is excessive, so that the sealing stability is poor and the energy consumption for sealing is high.
SUMMERY OF THE UTILITY MODEL
The utility model provides a drive structure of drive wheel of electric motor car adopts following technical scheme:
a driving structure of a driving wheel of an electric vehicle, comprising: the device comprises a driving motor, a driving induction element for controlling the driving motor, a planetary reducer, a planet carrier, a connecting frame and a driving wheel; a sealing baffle plate used for forming an installation space together with the motor shell is arranged outside one end of the motor shell of the driving motor; the sealing baffle is fixed to the motor shell; the driving induction element is installed in the installation space; the planetary reducer is fixed to the other end of the motor shell; the planetary reduction gear includes: a case formed with an inner gear ring, a sun gear, a first planetary gear set for revolving while rotating to drive the sun gear, and a second planetary gear set for being driven by the sun gear to perform revolving while rotating; a rotating shaft of the driving motor penetrates through the other end of the motor shell and is meshed with the planet wheels of the first planet wheel set; a planet wheel of the first planet wheel set is meshed with an inner gear ring of the box body and is rotationally connected to a sun wheel; a planet wheel of the second planet wheel set is meshed with the sun wheel and the inner gear ring of the box body; the planet carrier is rotationally connected to the inner wall of the box body and connected to the planet wheels of the second planet wheel set; the connecting frame is sleeved at one end of the box body and is fixed to the planet carrier; the driving wheel is sleeved on the periphery of the motor shell and/or the box body and is connected to the connecting frame; a driving bearing is arranged between the driving wheel and the motor shell; the planetary speed reducer and the planet carrier form a lubricating space for lubricating the planetary speed reducer and the planet carrier by grease through a connecting structure; one side of the driving bearing, which is far away from the connecting frame, is provided with a first annular sealing element which is used for sealing a sealing space enclosed by the connecting frame, the driving wheel, the box body, the planet carrier and the motor shell together so as to prevent external dust, water and oil dirt from entering the sealing space; a sealing assembly for sealing the lubricating space to prevent grease from leaking into the motor shell from the lubricating space is arranged between the box body and the motor shell.
Further, a first annular seal is located between the drive wheel and the motor housing.
Further, the rotating shaft of the driving motor extends into the box body through the sealing assembly.
Further, a second annular sealing element for increasing the stability of sealing the installation space is arranged in the circumferential direction of the sealing baffle; a second annular seal is disposed between the seal retainer and the motor housing.
Further, the planet carrier is connected to the planet wheels of the second planetary gear set by means of axle pins; the planet wheels of the first set of planet wheels are connected to the sun wheel by means of axle pins.
Further, the driving wheel is sleeved on the middle part of a whole formed by connecting the motor shell and the box body.
Further, the rotation axis of the rotation shaft of the drive motor, the rotation axis of the sun gear, the rotation axis of the carrier, the rotation axis of the link and the rotation axis of the drive wheel coincide.
Further, the coupling frame is inserted into the driving wheel in a circumferential direction of the driving wheel.
The utility model discloses an useful part lies in the drive structure of the drive wheel of the electric motor car that provides and sets up drive induction element in motor casing's outside and sealed to the drive induction element of external, has guaranteed drive induction element's stability, has also prolonged its life. Meanwhile, the planetary reducer and the planet carrier of the driving structure of the driving wheel of the electric vehicle are positioned in the same lubricating space, and the lubricating space is only sealed by the sealing assembly. This drive structure of drive wheel of electric motor car uses planetary reducer to slow down and through planet carrier output, makes power take off more reliable like this, under the circumstances of comparing the maximize, has reduced the shearing force that the link bore, has improved the stability of structure.
Drawings
Fig. 1 is a schematic view of a driving structure of a driving wheel of an electric vehicle according to the present invention.
The driving structure 10 of the driving wheel of the electric vehicle, the driving motor 11, the motor housing 111, the driving induction element 12, the planetary reducer 13, the box 131, the sun gear 132, the first planetary gear set 133, the second planetary gear set 134, the planetary carrier 14, the connecting frame 15, the driving wheel 16, the installation space 17, the seal baffle 18, the driving bearing 19, the first annular seal 20, the seal assembly 21, the second annular seal 22, the shaft pin 23, the lubricating space 24, the rotation axis 25, and the sealing space 26.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a driving structure 10 of a driving wheel of an electric vehicle includes: the driving device comprises a driving motor 11, a driving induction element 12, a planetary reducer 13, a planet carrier 14, a connecting carrier 15 and driving wheels 16. The drive induction element 12 is used to control the drive motor 11. The sealing baffle 18 is provided outside one end of the motor housing 111 of the driving motor 11. The seal retainer 18 is fixed to the motor housing 111 and forms an installation space 17 together with the motor housing 111. The driving induction element 12 is installed into the installation space 17. The structure arranges the driving induction element 12 outside the motor shell 111 and seals the external driving induction element 12, thereby ensuring the stability of the driving induction element 12 and prolonging the service life of the driving induction element 12.
Further, the planetary reducer 13 is fixed to the other end of the motor housing 111. The planetary reducer 13 includes: a case 131, a sun gear 132, a first planetary gear set 133, and a second planetary gear set 134. The case 131 is formed with an inner gear ring. The planetary gears of the first planetary gear set 133 revolve while rotating to drive the sun gear 132 under the combined action of the rotation shaft of the driving motor 11 and the ring gear. The planet wheels of the second planetary wheel set 134 revolve around while rotating under the combined action of the sun wheel 132 and the ring gear to drive the planet carrier 14 to rotate around the rotation axis 25 thereof. The rotation of the planet carrier 14 drives the connecting frame 15 to rotate together and further drives the driving wheel 16 to rotate, thereby realizing the driving of the electric vehicle.
As a specific structure, the rotating shaft of the driving motor 11 passes through the other end of the motor housing 111 and meshes with the planetary gears of the first planetary gear set 133. The planet wheels of the first set of planet wheels 133 are in mesh with an annulus of the casing 131 and are rotationally connected to the sun wheel 132. The planet wheels of the second planetary wheel set 134 are engaged with the sun wheel 132 and the inner gear ring of the box body 131. Planet carrier 14 is rotatably connected to the inner wall of casing 131 and to the planet wheels of second set of planet wheels 134. The connecting frame 15 is sleeved on one end of the case 131 and fixed to the carrier 14. The driving wheel 16 is sleeved on the outer periphery of the motor housing 111 and connected to the connecting frame 15.
In this structure, the rotation axis 25 of the rotation shaft of the drive motor 11, the rotation axis 25 of the sun gear 132, the rotation axis 25 of the carrier 14, the rotation axis 25 of the link 15, and the rotation axis 25 of the drive wheel 16 coincide. While the planet wheels of the first planetary gear set 133 and the planet wheels of the second planetary gear set 134 are both meshed with the inner gear ring of the box 131, the planet carrier 14 is also rotatably connected with the inner wall of the box 131. The structure has higher installation precision and transmission precision, and effectively improves the reliability of the driving structure. Furthermore, the driving structure 10 of the driving wheel 16 of the electric vehicle uses the planetary reducer 13 to reduce the speed and output the speed through the planet carrier 14, so that the power output is more reliable, the shearing force born by the connecting frame 15 is reduced under the condition of maximizing the ratio, and the structural stability is improved.
Alternatively, the driving wheel 16 may be sleeved on the outer periphery of the box 131 and connected to the connecting frame 15, or sleeved on the outer periphery of the connection between the motor housing 111 and the box 131 and connected to the connecting frame 15.
As a further alternative, a drive bearing 19 is provided between the drive wheel 16 and the motor housing 111. The drive bearing 19 serves to rotatably support the drive wheel 16, increasing the stability of the rotational structure between the drive wheel 16 and the motor housing 111. The planetary reducer 13 and the carrier 14 together form a lubrication space 24 through a connection structure. The lubrication space 24 is used for lubricating the planetary gear 13 and the carrier 14 with grease. The side of the drive bearing 19 remote from the connecting frame 15 is provided with a first annular seal 20. The connecting frame 15, the driving wheel 16, the housing 131, the planet carrier 14 and the motor housing 111 together enclose a sealed space 26. The first annular seal 20 serves to seal the sealed space 26 against the ingress of external dust, water, oil, etc. A seal assembly 21 is provided between the case 131 and the motor housing 111. The seal assembly 21 serves to seal the lubrication space 24 to prevent grease from leaking from the lubrication space 24 into the motor housing 111.
Since the planetary gear set 13 and the carrier 14 of the drive structure 10 for the drive wheel of the electric vehicle are located in the same lubrication space 24, the lubrication space 24 may be sealed only by the seal assembly 21. The sealing structure is simple and reliable, high in sealing stability and low in energy consumption.
As a specific embodiment, the first annular seal 20 is located between the drive wheel 16 and the motor housing 111. The rotating shaft of the driving motor 11 extends into the case 131 through the sealing assembly 21.
As a specific embodiment, a second annular seal 22 is provided in the circumferential direction of the seal baffle 18. The second annular seal 22 serves to increase the stability of sealing the installation space 17. Specifically, the second annular seal 22 is disposed between the seal retainer 18 and the motor housing 111.
As a specific embodiment, the planet carrier 14 is connected to the planet wheels of the second planetary gear set 134 by shaft pins 23. The planet wheels of the second planetary gear set 134 can rotate around their own rotation axes relative to the planet carrier 14, and drive the planet carrier 14 to rotate while revolving. The planet wheels of the first set of planet wheels 133 are connected to the sun wheel 132 by means of axle pins 23. The planet gears of the first planet gear set 133 can rotate around their own rotation axis relative to the sun gear 132, and drive the sun gear 132 to rotate while revolving.
In a specific embodiment, the driving wheel 16 is sleeved on the middle of the integrated body formed by connecting the motor housing 111 and the box 131. Therefore, the balance stability of the whole structure can be ensured, and the electric vehicle can stably run conveniently.
As a specific embodiment, the attachment frame 15 is inserted into the driving wheel 16 along the circumferential direction of the driving wheel 16. Can guarantee like this that link 15 drives the pivoted synchronism of drive wheel 16, and can make the moment of torsion between drive wheel 16 and the link 15 along circumference homodisperse, guarantee drive structure's reliability.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (8)
1. A driving structure of a driving wheel of an electric vehicle, comprising: the device comprises a driving motor, a driving induction element for controlling the driving motor, a planetary reducer, a planet carrier, a connecting frame and a driving wheel; a sealing baffle plate used for forming an installation space together with the motor shell is arranged outside one end of the motor shell of the driving motor; the seal baffle is fixed to the motor housing; the driving induction element is installed in the installation space; the planetary reducer is fixed to the other end of the motor shell; the planetary reduction gear includes: the planetary gear set comprises a box body formed with an inner gear ring, a sun gear, a first planetary gear set used for revolving while rotating to drive the sun gear and a second planetary gear set used for being driven by the sun gear to revolve while rotating; a rotating shaft of the driving motor penetrates through the other end of the motor shell and is meshed with the planet wheel of the first planet wheel set; the planet gear of the first planet gear set is meshed with the inner gear ring of the box body and is rotationally connected to the sun gear; the planet gear of the second planet gear set is meshed with the sun gear and the inner gear ring of the box body; the planet carrier is rotationally connected to the inner wall of the box body and connected to the planet wheels of the second planet wheel set; the connecting frame is sleeved at one end of the box body and is fixed to the planet carrier; the driving wheel is sleeved on the periphery of the motor shell and/or the box body and connected to the connecting frame; a driving bearing is arranged between the driving wheel and the motor shell; the planetary speed reducer and the planet carrier form a lubricating space for lubricating the planetary speed reducer and the planet carrier by grease through a connecting structure; a first annular sealing piece used for sealing a sealing space enclosed by the connecting frame, the driving wheel, the box body, the planet carrier and the motor shell together so as to prevent external dust, water and oil dirt from entering the sealing space is arranged on one side, far away from the connecting frame, of the driving bearing; and a sealing assembly used for sealing the lubricating space so as to prevent grease from leaking into the motor shell from the lubricating space is arranged between the box body and the motor shell.
2. The driving structure of the driving wheel of the electric vehicle according to claim 1,
the first annular seal is located between the drive wheel and the motor housing.
3. The driving structure of the driving wheel of the electric vehicle according to claim 1,
the rotating shaft of the driving motor penetrates through the sealing assembly and extends into the box body.
4. The driving structure of the driving wheel of the electric vehicle according to claim 1,
a second annular sealing element used for increasing the stability of sealing the installation space is arranged in the circumferential direction of the sealing baffle; the second annular seal is disposed between the seal retainer and the motor housing.
5. The driving structure of the driving wheel of the electric vehicle according to claim 1,
the planet carrier is connected to the planet wheels of the second planetary gear set through shaft pins; the planet wheels of the first set of planet wheels are connected to the sun wheel by axle pins.
6. The driving structure of the driving wheel of the electric vehicle according to claim 1,
the driving wheel is sleeved on the middle part of a whole formed by connecting the motor shell and the box body.
7. The driving structure of the driving wheel of the electric vehicle according to claim 1,
the rotating axis of the rotating shaft of the driving motor, the rotating axis of the sun gear, the rotating axis of the planet carrier, the rotating axis of the connecting frame and the rotating axis of the driving wheel are overlapped.
8. The driving structure of the driving wheel of the electric vehicle according to claim 1,
the connecting frame is inserted into the driving wheel along the circumferential direction of the driving wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020233293.9U CN212447099U (en) | 2020-02-28 | 2020-02-28 | Driving structure of driving wheel of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020233293.9U CN212447099U (en) | 2020-02-28 | 2020-02-28 | Driving structure of driving wheel of electric vehicle |
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| Publication Number | Publication Date |
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| CN212447099U true CN212447099U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020233293.9U Active CN212447099U (en) | 2020-02-28 | 2020-02-28 | Driving structure of driving wheel of electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186288A (en) * | 2020-02-28 | 2020-05-22 | 浙江尤奈特电机有限公司 | Driving structure of driving wheel of electric vehicle |
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2020
- 2020-02-28 CN CN202020233293.9U patent/CN212447099U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111186288A (en) * | 2020-02-28 | 2020-05-22 | 浙江尤奈特电机有限公司 | Driving structure of driving wheel of electric vehicle |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 321300 no.287, Lingshi Road, Chengxi New District, Yongkang City, Jinhua City, Zhejiang Province Patentee after: Zhejiang Unitech Electric Co.,Ltd. Address before: 321300 no.287, Lingshi Road, Chengxi New District, Yongkang City, Jinhua City, Zhejiang Province Patentee before: ZHEJIANG UNITE MOTOR Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |