CN209959812U - Two-stage sun planet speed reducing system for hub motor - Google Patents
Two-stage sun planet speed reducing system for hub motor Download PDFInfo
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- CN209959812U CN209959812U CN201920713199.0U CN201920713199U CN209959812U CN 209959812 U CN209959812 U CN 209959812U CN 201920713199 U CN201920713199 U CN 201920713199U CN 209959812 U CN209959812 U CN 209959812U
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Abstract
A two-stage sun planet speed reducing system for a hub motor in the technical field of hub motors comprises a sun gear, a planet gear carrier, an inner shell, a special-shaped torque transmission hole and a special-shaped torque transmission shaft, wherein the sun gear is arranged in a central sun gear mounting hole of the planet gear carrier, the planet gear is arranged on the planet gear carrier through a planet gear shaft, and speed reducing systems consisting of the sun gear, the planet gear and the planet gear carrier are all arranged in an inner shell; the wall surface of the secondary planet gear carrier is provided with a special-shaped torque transmission hole, the left end of the special-shaped torque transmission shaft is fixedly connected with the hub into a whole, and the right end of the special-shaped torque transmission shaft is arranged in the special-shaped torque transmission hole. The utility model discloses in, the power of electric motor rotor output loops through one-level sun gear, one-level planetary gear, one-level planet gear carrier, second grade sun gear, second grade planetary gear, second grade planet gear carrier, heterotypic biography torque axis and transmits for wheel hub. The utility model relates to a rationally, the quality is light, and the structure is reliable, and transmission efficiency is high, and the noise is low.
Description
Technical Field
The utility model relates to a wheel hub motor technical field's speed reduction system, especially a wheel hub motor that transmission efficiency high noise is low uses two-stage sun planet speed reduction system.
Background
The wheel hub motor technology is also called as the wheel built-in motor technology, and the most important characteristic of the wheel hub motor technology is that power, transmission and braking devices are integrated into a wheel hub, so that the mechanical part of an electric vehicle is greatly simplified. In the 70 s of the 20 th century, the technology is applied to the fields of mine transport vehicles and the like. For the hub motor used by passenger cars, the daily manufacturers develop the technology earlier and are in the leading position at present, and the international automobile huge heads including the universal and Toyota also contribute to the technology. The research on the hub motor in China is mostly concentrated in colleges and universities, the products are all electric vehicles, but the research on the driving technology of the hub motor is not mature, and particularly, in the aspect of the development of the high-torque hub motor, certain gap is reserved between the high-torque hub motor and foreign advanced products, so that the research and development investment on the hub motor technology needs to be strengthened, the core competitiveness is improved, the gap is reduced, and the advanced level of the world is achieved.
In the hub motor technology, a speed reduction system is necessary when the motor transmits force to the hub. However, the conventional speed reducing system has the defects of complex structure, large volume and low transmission efficiency, and influences the endurance mileage of the electric vehicle.
Disclosure of Invention
The utility model discloses to prior art's not enough, provide a wheel hub motor is with two-stage sun planet deceleration system, the structure is ingenious, and high integration is small, and transmission efficiency is high, and the speed reduction scope is wide, and work is steady and the noise is low.
The utility model is realized by the following technical proposal, the utility model comprises a wheel hub, a first-level sun gear, a first-level planetary gear carrier, a first-level planetary gear shaft, a second-level sun gear, a second-level planetary gear carrier, a second-level planetary gear shaft, an inner shell, a locking screw, a transmission gear, a special-shaped torque transmission hole, a special-shaped torque transmission shaft, a left-side planetary gear shaft mounting hole and a right-side planetary gear shaft mounting hole, wherein the wheel hub is connected with a wheel rim through a bolt, the first-level sun gear and the second-level sun gear are both in a double-tooth structure, the left-side diameter is a main gear, the right-side; the centers of the first-stage planet gear carrier and the second-stage planet gear carrier are respectively provided with a sun gear mounting hole, and the side walls of the first-stage planet gear carrier and the second-stage planet gear carrier are respectively provided with a left planet gear shaft mounting hole and a right planet gear shaft mounting hole; the first-stage sun gear and the second-stage sun gear are respectively arranged in central sun gear mounting holes of a first-stage planet gear carrier and a second-stage planet gear carrier, two ends of a first-stage planet gear shaft are respectively arranged in a left-side planet gear shaft mounting hole and a right-side planet gear shaft mounting hole of the first-stage planet gear carrier, two ends of a second-stage planet gear shaft are respectively arranged in a left-side planet gear shaft mounting hole and a right-side planet gear shaft mounting hole of the second-stage planet gear carrier, the first-stage planet gear is arranged in the first-stage planet gear carrier through the first-stage planet gear shaft, the second-stage planet gear is arranged in the second-stage planet gear carrier; the inner wall surface of the inner shell is respectively provided with primary planet gear inner teeth and secondary planet gear inner teeth, and the primary planet gear inner teeth and the secondary planet gear inner teeth are respectively matched with the primary planet gear and the secondary planet gear; the left side wall of a sun gear mounting hole of the primary planet gear carrier is provided with a transmission gear, and the transmission gear is matched with secondary teeth of the secondary sun gear; the first-stage speed reducer system consists of a first-stage sun gear, a first-stage planet gear and a first-stage planet gear carrier, and the second-stage speed reducer system consists of a second-stage sun gear, a second-stage planet gear and a second-stage planet gear carrier which are all arranged in the inner shell; the wall surface of the secondary planet gear carrier is provided with a special-shaped torque transmission hole, the left end of the special-shaped torque transmission shaft is fixedly connected with the hub into a whole, and the right end of the special-shaped torque transmission shaft is arranged in the special-shaped torque transmission hole.
Further, in the utility model discloses in, one-level planetary gear, second grade planetary gear, heterotypic biography torsion shaft are four.
Furthermore, in the utility model, the first-stage planetary gear and the second-stage planetary gear are symmetrically arranged on the respective gear racks; on the second-stage planet gear carrier, a left planet gear shaft mounting hole and a special-shaped torque transmission hole are arranged in a crossed mode.
Further, the utility model discloses in, the internal diameter of left side planetary gear axle mounting hole is greater than the internal diameter of right side planetary gear axle mounting hole, and one-level planetary gear axle, second grade planetary gear axle are big end hollow cylinder structure.
Furthermore, the special-shaped torsion transmission hole and the special-shaped torsion transmission shaft of the utility model are of non-circular structures.
Furthermore, in the present invention, the secondary teeth of the primary sun gear are connected to the rotor of the motor system.
Compared with the prior art, the utility model discloses have following beneficial effect and do: the utility model relates to a rationally, adopt the planet to arrange the reduction gear, the quality is light, and the structure is reliable, and transmission efficiency is high, and the speed reduction scope is wide, and work is steady and the noise is low.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is an assembly view of the hub and the secondary planet carrier in an embodiment of the present invention;
fig. 3 is an exploded view of an embodiment of the present invention;
FIG. 4 is a partial enlarged view of the left side of FIG. 3;
FIG. 5 is a partial enlarged view of the right side of FIG. 3;
wherein: 1. the planetary gear transmission mechanism comprises a hub, 2, a first-stage sun gear, 3, a first-stage planetary gear, 4, a first-stage planetary gear carrier, 5, a first-stage planetary gear shaft, 6, a second-stage sun gear, 7, a second-stage planetary gear, 8, a second-stage planetary gear carrier, 9, a second-stage planetary gear shaft, 10, an inner shell, 11, a locking screw, 12, transmission teeth, 13, a special-shaped torque transmission hole, 14, a special-shaped torque transmission shaft, 15, a left-side planetary gear shaft mounting hole, 16 and a right-side planetary gear shaft mounting hole.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the embodiments of the present invention are based on the technical solution of the present invention and provide detailed embodiments and specific operation processes, but the scope of the present invention is not limited to the following embodiments.
Examples
Fig. 1 to 5 show specific embodiments, the present invention includes a wheel hub 1, a first-stage sun gear 2, a first-stage planetary gear 3, a first-stage planetary gear carrier 4, a first-stage planetary gear shaft 5, a second-stage sun gear 6, a second-stage planetary gear 7, a second-stage planetary gear carrier 8, a second-stage planetary gear shaft 9, an inner housing 10, a locking screw 11, a transmission gear 12, a special-shaped torque transmission hole 13, a special-shaped torque transmission shaft 14, a left-side planetary gear shaft mounting hole 15, and a right-side planetary gear shaft mounting hole 16, wherein the wheel hub 1 is connected with a wheel rim through a; the primary sun gear 2 and the secondary sun gear 6 are both in a double-gear structure, the left side with a large diameter is a main gear, the right side with a small diameter is a secondary gear, and the main gear of the sun gear is matched with each planetary gear; the centers of the first-stage planet gear carrier 4 and the second-stage planet gear carrier 8 are respectively provided with a sun gear mounting hole, and the side walls of the first-stage planet gear carrier 4 and the second-stage planet gear carrier 8 are respectively provided with a left planet gear shaft mounting hole 15 and a right planet gear shaft mounting hole 16; the primary sun gear 2 and the secondary sun gear 6 are respectively arranged in central sun gear mounting holes of a primary planet gear carrier 4 and a secondary planet gear carrier 8, two ends of a primary planet gear shaft 5 are respectively arranged in a left planet gear shaft mounting hole 15 and a right planet gear shaft mounting hole 16 of the primary planet gear carrier 4, two ends of a secondary planet gear shaft 9 are respectively arranged in a left planet gear shaft mounting hole 15 and a right planet gear shaft mounting hole 16 of the secondary planet gear carrier 8, the primary planet gear 3 is arranged in the primary planet gear carrier 4 through the primary planet gear shaft 5, the secondary planet gear 7 is arranged in the secondary planet gear carrier 8 through the secondary planet gear shaft 9, and a locking screw 11 is arranged in the right planet gear shaft mounting hole 16; the inner wall surface of the inner shell 10 is respectively provided with primary planet gear inner teeth and secondary planet gear inner teeth, and the primary planet gear inner teeth and the secondary planet gear inner teeth are respectively matched with the primary planet gear 3 and the secondary planet gear 7; a transmission gear 12 is arranged on the left side wall of the sun gear mounting hole of the primary planet gear carrier 4, and the transmission gear 12 is matched with the secondary gear of the secondary sun gear 6; a primary speed reducer system consisting of a primary sun gear 2, a primary planet gear 3 and a primary planet gear carrier 4 and a secondary speed reducer system consisting of a secondary sun gear 6, a secondary planet gear 7 and a secondary planet gear carrier 8 are all arranged in the inner shell 10; a special-shaped torque transmission hole 13 is arranged on the wall surface of the secondary planet gear carrier 8, the left end of the special-shaped torque transmission shaft 14 is fixedly connected with the hub 1 into a whole, and the right end of the special-shaped torque transmission shaft 14 is arranged in the special-shaped torque transmission hole 13; the number of the primary planet gears 3, the number of the secondary planet gears 7 and the number of the special-shaped torque transmission shafts 14 are four; the primary planet gear 3 and the secondary planet gear 7 are symmetrically arranged on respective gear carriers; on the secondary planet gear carrier 8, a left planet gear shaft mounting hole 15 and a special-shaped torque transmission hole 13 are arranged in a crossed mode; the inner diameter of the left planet gear shaft mounting hole 15 is larger than that of the right planet gear shaft mounting hole 16, and the primary planet gear shaft 5 and the secondary planet gear shaft 9 are both in a large-small-head hollow cylindrical structure; the special-shaped torque transmission hole 13 and the special-shaped torque transmission shaft 14 are of non-circular structures.
In the implementation process of the utility model, the secondary teeth of the primary sun gear 2 are connected with the rotor of the motor system, the force output by the motor rotor is firstly transmitted to the primary planet gear 3 through the primary sun gear 2, and the primary planet gear 3 is transmitted to the primary planet gear carrier 4; then the primary planet gear carrier 4 is transmitted to a secondary sun gear 6 through a transmission gear 12, the secondary sun gear 6 is transmitted to a secondary planet gear 7, and the secondary planet gear 7 is transmitted to a secondary planet gear carrier 8; finally, the secondary planet-carrier 8 is transmitted to the hub 1 via a profiled torque-transmitting shaft 14. The utility model discloses a such design, the structure is reliable, and transmission efficiency is high, and the speed reduction scope is wide, and work is steady and the noise is low.
The utility model discloses in, heterotypic biography is turned round hole 13, heterotypic biography torsion axis 14 and is the non-circular structure, can prevent to skid in the two in-process appearance of transmission power.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (6)
1. A two-stage sun planetary reduction system for a hub motor comprises a hub (1), wherein the hub (1) is connected with a wheel rim through a bolt, and is characterized by further comprising a first-stage sun gear (2), a first-stage planetary gear (3), a first-stage planetary gear carrier (4), a first-stage planetary gear shaft (5), a second-stage sun gear (6), a second-stage planetary gear (7), a second-stage planetary gear carrier (8), a second-stage planetary gear shaft (9), an inner shell (10), a locking screw (11), a transmission gear (12), a special-shaped torque transmission hole (13), a special-shaped torque transmission shaft (14), a left-side planetary gear shaft mounting hole (15) and a right-side planetary gear shaft mounting hole; the primary sun gear (2) and the secondary sun gear (6) are of a double-gear structure, the left side of the primary sun gear is a main gear with a large diameter, the right side of the primary sun gear is a secondary gear with a small diameter, and the main gear of the sun gear is matched with each planetary gear; the centers of the first-stage planet gear carrier (4) and the second-stage planet gear carrier (8) are respectively provided with a sun gear mounting hole, and the side walls of the first-stage planet gear carrier (4) and the second-stage planet gear carrier (8) are respectively provided with a left planet gear shaft mounting hole (15) and a right planet gear shaft mounting hole (16); the planetary gear set comprises a primary sun gear (2) and a secondary sun gear (6), wherein the primary sun gear (2) and the secondary sun gear (6) are respectively arranged in central sun gear mounting holes of a primary planet gear carrier (4) and a secondary planet gear carrier (8), two ends of a primary planet gear shaft (5) and a secondary planet gear shaft (9) are respectively arranged in gear shaft mounting holes of the respective gear carriers, the primary planet gear (3) is arranged in the primary planet gear carrier (4) through the primary planet gear shaft (5), the secondary planet gear (7) is arranged in the secondary planet gear carrier (8) through the secondary planet gear shaft (9), and a locking screw (11) is arranged in a planet gear shaft mounting hole (16) at the right side; the inner wall surface of the inner shell (10) is provided with primary planet gear inner teeth and secondary planet gear inner teeth respectively, and the primary planet gear inner teeth and the secondary planet gear inner teeth are matched with the primary planet gear (3) and the secondary planet gear (7) respectively; a transmission gear (12) is arranged on the left side wall of a sun gear mounting hole of the primary planet gear carrier (4), and the transmission gear (12) is matched with secondary teeth of the secondary sun gear (6); a primary speed reducer system consisting of a primary sun gear (2), a primary planet gear (3) and a primary planet gear carrier (4), and a secondary speed reducer system consisting of a secondary sun gear (6), a secondary planet gear (7) and a secondary planet gear carrier (8) are all arranged in the inner shell (10); the wall surface of the secondary planet gear carrier (8) is provided with a special-shaped torque transmission hole (13), the left end of the special-shaped torque transmission shaft (14) is fixedly connected with the hub (1) into a whole, and the right end of the special-shaped torque transmission shaft (14) is arranged in the special-shaped torque transmission hole (13).
2. A two-stage sun-and-planet speed reduction system for hub motors according to claim 1, characterized in that the number of the primary planet gears (3), the secondary planet gears (7) and the special-shaped torque transmission shafts (14) is four.
3. A two-stage sun-and-planet reduction system for hub motors according to claim 2, characterized in that the primary planet gears (3), the secondary planet gears (7) are arranged symmetrically on the respective carriers; on the secondary planet gear carrier (8), a left planet gear shaft mounting hole (15) and a special-shaped torque transmission hole (13) are arranged in a crossed mode.
4. A two-stage sun-planet speed reduction system for hub motors according to claim 3, wherein the inner diameter of the left-side planet gear shaft mounting hole (15) is larger than the inner diameter of the right-side planet gear shaft mounting hole (16), and the primary planet gear shaft (5) and the secondary planet gear shaft (9) are both in a large-small head hollow cylindrical structure.
5. The two-stage sun planetary reduction system for the hub motor according to claim 4, wherein the special-shaped torque transmission holes (13) and the special-shaped torque transmission shafts (14) are of non-circular structures.
6. A two-stage sun-and-planet reduction system for hub motors according to claim 5, characterized in that the secondary teeth of the primary sun wheel (2) are connected to the rotor of the motor system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920713199.0U CN209959812U (en) | 2019-05-18 | 2019-05-18 | Two-stage sun planet speed reducing system for hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920713199.0U CN209959812U (en) | 2019-05-18 | 2019-05-18 | Two-stage sun planet speed reducing system for hub motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209959812U true CN209959812U (en) | 2020-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920713199.0U Active CN209959812U (en) | 2019-05-18 | 2019-05-18 | Two-stage sun planet speed reducing system for hub motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209959812U (en) |
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2019
- 2019-05-18 CN CN201920713199.0U patent/CN209959812U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230718 Address after: 201805 room 2201, No. 888, Moyu South Road, Anting Town, Jiading District, Shanghai J Patentee after: Ackermann Matrix Technology (Shanghai) Co.,Ltd. Address before: 201806 room 101-5, ground floor, building 1, Lane 127, Guotai Road, Yangpu District, Shanghai Patentee before: SHANGHAI ZHIYU POWER TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right |