CN220227761U - Speed reducing mechanism of hub motor - Google Patents
Speed reducing mechanism of hub motor Download PDFInfo
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- CN220227761U CN220227761U CN202321650167.3U CN202321650167U CN220227761U CN 220227761 U CN220227761 U CN 220227761U CN 202321650167 U CN202321650167 U CN 202321650167U CN 220227761 U CN220227761 U CN 220227761U
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- speed motor
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- 230000007246 mechanism Effects 0.000 title claims abstract description 18
- 230000009467 reduction Effects 0.000 claims abstract description 13
- 238000009434 installation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009194 climbing Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Abstract
The utility model relates to a speed reducing mechanism of a hub motor, belonging to the field of electric vehicle accessories, wherein a hub center shaft is fixedly connected with a high-speed motor, the hub center shaft is movably connected with a bearing ring, the high-speed motor is movably connected with a driving gear, the high-speed motor is fixedly connected with a supporting shaft, the supporting shaft is movably connected with a carrier gear, the bearing ring is fixedly connected with a hub end cover, the bearing ring is fixedly connected with a one-way overrunning clutch, the one-way overrunning clutch is fixedly connected with a connecting plate, the connecting plate is fixedly connected with an internal tooth gear ring, the driving gear is meshed with the carrier gear, the carrier gear is meshed with the internal tooth gear ring, the hub center shaft and a high-speed motor shell are integrally arranged, an output shaft of the high-speed motor drives the carrier gear to rotate through the driving gear, the carrier gear drives the internal tooth gear to rotate, and the internal tooth gear drives the one-way overrunning clutch to drive the hub to rotate through the connecting plate, so that the reduction ratio is more than 7:1, and the sliding resistance is small.
Description
Technical Field
The utility model discloses a speed reducing mechanism of a hub motor, belongs to the field of electric vehicle accessories, and relates to a speed reducing mechanism for driving a hub to rotate by a high-speed motor.
Background
In-wheel motors, a motor mounted inside the hub of an electric vehicle is called an in-wheel motor. The existing hub gear motor is divided into two types, wherein the first type is a planetary gear motor, and the second type is a hub gear motor which directly drives an internal tooth gear ring to drive a hub to rotate.
Application number: 2014101466263 an electric bicycle hub motor comprises a horizontally arranged main shaft, a hub shell rotatably arranged outside the main shaft, a stator and a rotor arranged in the hub shell, and a gear reduction mechanism, wherein the stator is fixed on the main shaft, the gear reduction mechanism comprises a rotor gear fixed with the rotor and coaxially sleeved outside the main shaft, a planet carrier fixed on the main shaft, a planet shaft rotatably penetrating through the planet carrier, a left planet gear and a right planet gear fixed on the planet shaft, and a sun gear fixed with the hub shell and coaxially sleeved outside the main shaft, wherein the left planet gear is meshed with the rotor gear, and the right planet gear is meshed with the sun gear. The hub motor has large output torque and an internal speed change function.
Application number: 2022229377839 an electric vehicle speed reduction hub motor belongs to the field of electric vehicle accessories, a washbasin-shaped hub is respectively arranged on two sides of a hub center shaft, a circular ring-shaped steel ring is arranged on the outer edges of two hubs, a disc-shaped motor left side cover and a disc-shaped motor right side cover are respectively and vertically arranged on the left side and the right side above the middle part of the hub center shaft, a cylindrical motor stator is arranged between the motor left side cover and the motor right side cover, a circular coil is arranged on a groove of the inner wall of the motor stator, a cylindrical motor center shaft is arranged between the motor left side cover and the center of the motor right side cover, a cylindrical motor rotor is arranged on the motor center shaft, a driving gear arranged on the top end of the right side of the motor center shaft is meshed with a circular ring gear arranged on the left side surface of the hub center shaft right side of the hub center shaft, the high-speed motor drives the driving gear to stir the gear to rotate, the hub is driven by the wheel and the wheel hub to drive the steel ring and the tire to rotate to push an electric vehicle to advance.
The first planetary gear reduction hub motor has the defects of more gears, large noise, low reliability and incapability of realizing a speed ratio between a small-size sun gear and a gear ring of the motor of more than 6:1; the disadvantage of the hub gear motor with the internal tooth gear ring directly driven by the second high-speed motor to drive the hub to rotate is that the hub gear motor is not suitable for installation of hub motors below 14 inches, because the space inside the hub is limited, the speed ratio between a driving gear and the gear ring on the motor cannot be more than 7:1, and the hub rotation speed is too high to climb and weak. The hub of the electric vehicle is assembled by the high-speed motor speed reducing mechanism with low power consumption, good climbing performance, compact structure, small sliding resistance and low noise.
Disclosure of Invention
The speed reducing mechanism of the hub motor adopts the integrated arrangement of the hub center shaft and the high-speed motor, the output shaft of the high-speed motor drives the carrier gear to rotate through the driving gear, the carrier gear drives the internal tooth gear ring to rotate, and the internal tooth gear ring drives the one-way overrunning clutch to drive the hub to rotate through the connecting plate, so that the reduction ratio of the speed reducing mechanism can be more than 7:1.
The technical scheme of the utility model is that the speed reducing mechanism of the hub motor comprises a hub center shaft, the hub center shaft is fixedly connected with a high-speed motor, the hub center shaft is movably connected with a bearing ring, the high-speed motor is movably connected with a driving gear, the high-speed motor is fixedly connected with a supporting shaft, the supporting shaft is movably connected with a carrier gear, the bearing ring is fixedly connected with a hub end cover, the bearing ring is fixedly connected with a one-way overrunning clutch, the one-way overrunning clutch is fixedly connected with a connecting plate, the connecting plate is fixedly connected with an internal tooth gear ring, and the driving gear is meshed with the carrier gear and the carrier gear is meshed with the internal tooth gear ring.
Furthermore, a cylindrical hub center shaft and center lines of the two hub center shafts are respectively and horizontally arranged below the left side surface and the right side surface of the high-speed motor shell, the center lines of the left side surface and the right side surface of the high-speed motor shell are on the same straight line, a driving gear is arranged on an output shaft in the center of the left side surface of the high-speed motor, a supporting shaft which is horizontally and horizontally arranged above the left side surface of the high-speed motor shell is cylindrical, and a carrier gear which is arranged above the supporting shaft through a bearing is disc-shaped.
Further, the internal tooth gear ring is circular, the connecting plate of internal tooth gear ring left side face installation is discoid, the central authorities of connecting plate have set up circular opening, open-ended left surface and the right fixed connection of disc one-way overrunning clutch excircle, the hole in one-way overrunning clutch central authorities and the excircle fixed connection on bearing ring right, the central authorities of bearing ring excircle and the through-hole fixed connection at discoid wheel hub end cover center, the edge of wheel hub end cover right flank passes through the bolt to be connected with wheel hub, the inside of bearing ring passes through the bearing to be installed on the right of high-speed motor left wheel hub centraxonial, internal tooth gear ring, the connecting plate, one-way overrunning clutch, wheel hub end cover, the central line of bearing ring is on same straight line.
Further, the speed ratio between the driving gear and the carrier gear is 1:1.5-1:4, and the speed ratio between the carrier gear and the internal tooth gear is 1:3-1:6.
The beneficial effects are that: the existing planetary gear reduction hub motor has the defects of more gears, high noise, low reliability, incapability of realizing a speed ratio between a sun gear and a gear ring of more than 6:1, inapplicability of the hub reduction motor which directly drives an internal tooth gear ring to drive a hub to rotate by a high-speed motor to be installed by a hub motor below 14 inches, incapability of realizing a speed ratio between a driving gear and the gear ring on the motor of more than 7:1, and incapability of causing too high hub rotating speed and weak climbing.
The reduction gear of a kind of hub motor has adopted the setting of the integration of central axis of the hub and high-speed motor housing, the output shaft of the high-speed motor drives the carrier gear to rotate through the driving gear, the carrier gear drives the internal tooth gear to rotate, the internal tooth gear drives the unidirectional overrunning clutch to drive the hub to rotate through the connecting plate, the reduction gear ratio between driving gear and internal tooth gear of this reduction gear can be greater than 7:1, and the sliding resistance is small, compact in construction, noise is small.
Drawings
For further explanation of the technical solutions of the present utility model, the drawings to be used are briefly described below, and the drawings in the following description are only some schematic views of the present utility model, and it is not necessary for those skilled in the art to creatively combine these drawings to obtain more drawings.
Fig. 1 is a front view of a reduction mechanism of an in-wheel motor;
FIG. 2 is a schematic view of the structure of the hub center shaft, the high-speed motor, the carrier gear, the drive gear, and the support shaft;
FIG. 3 is a schematic view of the internal tooth ring gear, connecting plate, one-way overrunning clutch;
FIG. 4 is a schematic view of the structure of a hub end cap and a bearing ring;
in the figure, 1, a hub center shaft; 2. a high-speed motor; 3. a carrier gear; 4. internal tooth gear ring; 5. a connecting plate; 6. a one-way overrunning clutch; 7. a hub end cap; 8. a drive gear; 9. a support shaft; 10. a bearing ring.
Detailed Description
The shape and construction of the utility model will now be described in detail with reference to the drawings and figures.
Example 1
Referring to fig. 1-4, a speed reducing mechanism of a hub motor comprises a hub center shaft 1, wherein the hub center shaft 1 is used for supporting a high-speed motor 2 and a hub end cover 7, the hub center shaft 1 is fixedly connected with the high-speed motor 2, the high-speed motor 2 is used for driving a driving gear 8, the hub center shaft 1 is movably connected with a bearing ring 10, the bearing ring 10 is used for fixing the hub end cover 7 and a one-way overrunning clutch 6, the high-speed motor 2 is movably connected with the driving gear 8, the driving gear 8 is used for driving the carrier gear 3 to rotate, the high-speed motor 2 is fixedly connected with a supporting shaft 9, the supporting shaft 9 is used for supporting the carrier gear 3, the supporting shaft 9 is movably connected with the carrier gear 3 and used for driving an internal tooth gear ring 4 to rotate, the bearing ring 10 is fixedly connected with the hub end cover 7 and is used for supporting the hub to rotate, the bearing ring 10 is fixedly connected with the one-way overrunning clutch 6, the one-way overrunning clutch 6 is used for being separated from power between the hub end cover 7 and the internal tooth ring 4 during sliding, the one-way overrunning clutch 6 is fixedly connected with the carrier gear 5 and the carrier gear 3 and the carrier gear 4, the carrier gear 5 is fixedly connected with the carrier gear 3 and the internal tooth ring 4 is meshed with the carrier gear 4, and the carrier gear 4 is fixedly connected with the carrier gear 3 and the carrier gear 4, and the carrier gear 4 is meshed with the internal tooth gear 3 and the carrier gear 4 is fixedly and meshed with the carrier gear 4.
Referring to fig. 1-2, a cylindrical hub center shaft 1 is horizontally arranged below the left side surface and the right side surface of the high-speed motor 2 shell, the center lines of the two hub center shafts 1 are on the same straight line, a driving gear 8 is arranged on an output shaft in the center of the left side surface of the high-speed motor 2, a supporting shaft 9 horizontally arranged above the left side surface of the high-speed motor 2 shell is cylindrical, a carrier gear 3 arranged above the supporting shaft 9 through a bearing is disc-shaped, and the shapes and structures of the hub center shaft 1, the high-speed motor 2, the carrier gear 3, the driving gear 8 and the supporting shaft 9 and the installation positions are the same.
Referring to fig. 1-4, the internal tooth gear ring 4 is circular, a connecting plate 5 installed on the left side surface of the internal tooth gear ring 4 is disc-shaped, a circular opening is arranged in the center of the connecting plate 5, the left side surface of the opening is fixedly connected with the right side of the outer circle of the disc-shaped one-way overrunning clutch 6, an inner hole in the center of the one-way overrunning clutch 6 is fixedly connected with the outer circle on the right side of the bearing ring 10, the center of the outer circle of the bearing ring 10 is fixedly connected with a through hole in the center of the disc-shaped hub end cover 7, the edge of the right side surface of the hub end cover 7 is connected with the hub through bolts, the inside of the bearing ring 10 is installed on the right side of the hub center shaft 1 on the left side of the high-speed motor 2 through a bearing, and the center lines of the internal tooth gear ring 4, the connecting plate 5, the one-way overrunning clutch 4, the hub end cover 7 and the bearing ring 10 are on the same straight line.
Referring to fig. 1-2, the speed ratio between the driving gear 8 and the carrier gear 3 is 1:1.5-1:4, and the speed ratio between the carrier gear 3 and the internal tooth gear 4 is 1:3-1:6.
Example two
The speed ratio between the driving gear 8 and the carrier gear 3 is 1:1.2-1:3, and the speed ratio between the carrier gear 3 and the internal tooth gear 4 is 1:2.7-1:4.
The use method of the speed reducing mechanism of the hub motor is described in the simple description, a driver turns on a power switch of the electric vehicle, a slow rotation speed-regulating rotating handle and a speed-regulating rotating handle command controller supply power to the high-speed motor 2, the high-speed motor 2 drives the driving gear 8 to rotate clockwise, the driving gear 8 drives the carrier gear 3 to rotate anticlockwise, the carrier gear 3 drives the internal tooth gear ring 4 to rotate clockwise, the internal tooth gear ring 4 drives the one-way overrunning clutch 6 to rotate clockwise through the connecting plate 5, the one-way overrunning clutch 6 drives the hub end cover 7 to rotate synchronously through the bearing ring 10, the hub end cover 7 drives the hub and the tire to rotate synchronously, the hub and the tyre rotate and then push the electric vehicle to go forward through the hub end cover 7 and the hub center shaft 1, after the driver releases the speed regulation rotating handle, the acceleration signal between the speed regulation rotating handle and the controller is suspended, the controller is suspended to supply power to the high-speed motor 2, the rotating speed of the high-speed motor 2 is rapidly reduced to a stop state, the driving gear 8 prevents the carrier gear 3 and the internal tooth gear ring 4 from rotating, at the moment, the electric vehicle continues to slide forwards under the action of inertia, the tyre and the hub, the hub end cover 7 and the bearing ring 10 are rotating continuously, at the moment, the inner ring and the outer ring of the one-way overrunning clutch 6 are separated instantaneously, the inner ring rotates synchronously along with the bearing ring 10, and the outer ring is prevented from rotating by the internal tooth gear ring 4 and the connecting plate 5.
The foregoing is merely a general disclosure of the utility model and is not intended to be in any way limiting; any and all modifications, adaptations, and variations of the present utility model, and any and all equivalent changes made by those skilled in the art without departing from the technical scheme of the present utility model, and performing the above-described techniques, are within the scope of the present utility model.
Claims (4)
1. The utility model provides a wheel hub motor's reducing mechanism, includes wheel hub axis, characterized by wheel hub axis and high-speed motor fixed connection, wheel hub axis and bearing ring swing joint, high-speed motor and driving gear swing joint, high-speed motor and back shaft fixed connection, back shaft and carrier gear swing joint, bearing ring and wheel hub end cover fixed connection, bearing ring and one-way overrunning clutch fixed connection, one-way overrunning clutch and connecting plate fixed connection, connecting plate and internal tooth ring gear fixed connection, driving gear and carrier gear meshing, carrier gear and internal tooth ring gear meshing.
2. The reducing mechanism of a hub motor according to claim 1, wherein a cylindrical hub center shaft is horizontally arranged below the left side surface and the right side surface of the high-speed motor shell, the center lines of the two hub center shafts are on the same straight line, a driving gear is arranged on an output shaft in the center of the left side surface of the high-speed motor, a supporting shaft horizontally arranged above the left side surface of the high-speed motor shell is cylindrical, and a carrier gear arranged above the supporting shaft through a bearing is disc-shaped.
3. The reducing mechanism of the hub motor according to claim 1, wherein the internal tooth gear ring is circular, the connecting plate arranged on the left side surface of the internal tooth gear ring is disc-shaped, a circular opening is arranged in the center of the connecting plate, the left side surface of the opening is fixedly connected with the right side of the outer circle of the disc-shaped one-way overrunning clutch, an inner hole in the center of the one-way overrunning clutch is fixedly connected with the outer circle on the right side of the bearing ring, the center of the outer circle of the bearing ring is fixedly connected with a through hole in the center of the disc-shaped hub end cover, the edge of the right side surface of the hub end cover is connected with the hub through a bolt, and the inside of the bearing ring is arranged on the right side of the central shaft of the left hub of the high-speed motor through a bearing.
4. The reduction mechanism of the hub motor according to claim 1, wherein the speed ratio between the driving gear and the carrier gear is 1:1.5-1:4, and the speed ratio between the carrier gear and the internal gear ring is 1:3-1:6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321650167.3U CN220227761U (en) | 2023-06-27 | 2023-06-27 | Speed reducing mechanism of hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321650167.3U CN220227761U (en) | 2023-06-27 | 2023-06-27 | Speed reducing mechanism of hub motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220227761U true CN220227761U (en) | 2023-12-22 |
Family
ID=89177815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321650167.3U Active CN220227761U (en) | 2023-06-27 | 2023-06-27 | Speed reducing mechanism of hub motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220227761U (en) |
-
2023
- 2023-06-27 CN CN202321650167.3U patent/CN220227761U/en active Active
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