CN210693674U - Electric machine - Google Patents
Electric machine Download PDFInfo
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- CN210693674U CN210693674U CN201921838678.1U CN201921838678U CN210693674U CN 210693674 U CN210693674 U CN 210693674U CN 201921838678 U CN201921838678 U CN 201921838678U CN 210693674 U CN210693674 U CN 210693674U
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- output shaft
- rotor
- stator
- gear
- planet
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Abstract
The utility model discloses a motor, which comprises a shell, a stator, a rotor and an output shaft, wherein the output shaft is rotatably arranged on the shell, the stator is fixedly connected with the shell, one part of the rotor surrounds the stator, and the rotor is arranged on the output shaft in a manner of rotating relative to the output shaft; the first gear is sleeved on the output shaft in an empty mode and is fixedly connected with the rotor; the planetary mechanism comprises a planet carrier and planet gears connected to the planet carrier, the planet carrier is fixedly connected with the output shaft, the planet gears are fixedly connected with the planet carrier, and the planet gears are meshed with the first gear. The utility model discloses the torque that output shaft output torque and rotor produced is inequality advantage.
Description
Technical Field
The utility model relates to a motor.
Background
The motor is mainly used for generating driving torque and is used as a power source of electric appliances or various machines. For example:
the most important power in the electric vehicle comes from a hub motor, the existing hub motor is respectively composed of a stator and a rotor with a fixed shaft, the fixed shaft is fixedly connected with the electric vehicle through threads, and the rotor is an external hub. For the hub motor, when the motor works, the hub rotates, the fixed shaft is not fixed, and the maximum torque output by the hub motor is determined by the magnitude of the magnetic field force.
For another example, in a motor with a rotating output shaft, after power is applied, a magnetic field is formed between the stator and the rotor to rotate the rotor, and the rotor drives the output shaft to rotate. In such a motor, the maximum torque output is determined by the magnitude of the magnetic field force.
For the motors with the two structures, the output torque is determined by the magnitude of the magnetic field force, and for the motor with the same volume, it is very difficult to change the magnetic field force, especially to increase the magnetic field force, so that how to change the output torque of the motor is the problem faced at present.
Disclosure of Invention
The utility model provides a torque that output shaft output torque and rotor produced is inequality motor.
The technical scheme for solving the technical problems is as follows:
the motor comprises a shell, a stator, a rotor and an output shaft, wherein the output shaft is rotatably arranged on the shell; also comprises
The first gear is sleeved on the output shaft in an empty mode and is fixedly connected with the rotor;
the planetary mechanism comprises a planet carrier and planet gears connected to the planet carrier, the planet carrier is fixedly connected with the output shaft, the planet gears are fixedly connected with the planet carrier, and the planet gears are meshed with the first gear.
Furthermore, the planetary gear set further comprises an internal gear ring which is fixed with the shell and meshed with the planet gears.
Further, the stator includes iron core, connecting portion, and connecting portion are fixed with the iron core, and the one end and the casing of iron core are fixed.
Furthermore, a central hole is formed in the stator, and one end of the output shaft penetrates through the central hole of the stator and then is in rotating fit with the shell.
Further, the rotor includes rotor body, installation department, and the last chamber that holds that is equipped with of rotor body, the installation department is located and holds the chamber and fixed with rotor body, is equipped with the mounting hole on the installation department, a part of stator is located hold in the chamber.
When the rotor rotates, the first gear rotates along with the rotor, the first gear drives the planet teeth to rotate, the planet teeth drive the planet carrier to rotate, and the planet carrier drives the output shaft to rotate. The utility model discloses the torque that will rotate the output transmits the output shaft through first gear and planetary mechanism, at this in-process, because the rotational speed of first gear and planet tooth is inequality to the rotational speed that makes the output shaft is inequality with the rotational speed of rotor (the relative rotor in the commentaries on classics of output shaft is set to as required can be the speed reduction, also can be with higher speed), like this the utility model discloses improve the back in motor inside, make the moment of torsion of output shaft obtain the adjustment as required.
The utility model discloses especially under the condition that needs increase output torque, to the motor of the same volume, under the condition that does not change magnetic field force, through the cooperation back of first gear with planetary mechanism, can make output torque obtain the increase.
Drawings
FIG. 1 is a schematic structural view of the motor of the present invention
Reference numbers in the drawings:
the structure comprises a shell 1, a stator 2, an iron core 21, a connecting part 22, a rotor 3, a rotor body 31, a mounting part 32, a containing cavity 33, a bearing 4 serving as an output shaft 34, a first gear 5, a planet carrier 6, a planet gear 7 and an internal gear ring 8.
Detailed Description
As shown in fig. 1, the motor of the present invention includes a housing 1, a stator 2, a rotor 3, and an output shaft 4, wherein the output shaft 4 is rotatably disposed on the housing 1, and the output shaft 4 is rotatably disposed on the housing 1 through a bearing. One end of the output shaft 4 is exposed outside the housing 1, the stator 2 and the rotor 3 are positioned inside the housing 1, the stator 2 is fixedly connected with the housing 1, a part of the rotor 3 surrounds the stator 2, and the rotor 3 is arranged on the output shaft 4 in a manner of rotating relative to the output shaft 4.
The stator 2 comprises an iron core 21 and a connecting part 22, the connecting part 22 is fixed with the iron core 21, and one end of the iron core 21 is fixed with the shell 1. And a central hole is formed in the stator 2, and one end of the output shaft 4 penetrates through the central hole of the stator and then is rotationally matched with the shell. The central hole is located on the connecting portion 22, and the central hole 22 is preferably a stepped hole.
Rotor 3 includes rotor body 31, installation department 32, is equipped with on rotor body 31 and holds chamber 33, installation department 32 is located and holds chamber 33 and fixed with rotor body 31, is equipped with the mounting hole on the installation department 32, sets up bearing 34 in the mounting hole, output shaft 4 passes bearing 34 in this mounting hole. At least a part of the stator 2 is positioned in the accommodating cavity 33, the core 21 of the stator 2 is positioned in the accommodating cavity 33, and a part of the connecting portion 22 is positioned in the accommodating cavity.
The planetary gear train further comprises a first gear 5 and a planetary mechanism, wherein the first gear 5 is rotatably arranged on the output shaft 4, and the first gear 5 and the output shaft 4 can rotate relatively. The first gear 5 is fixedly connected with the rotor 3, and when the rotor 3 rotates, the first gear 5 rotates along with the rotor 3. The planetary mechanism comprises a planet carrier 6 and planet gears 7 connected to the planet carrier 6, the planet carrier 6 is fixedly connected with the output shaft 4, planet teeth 7 are fixedly connected with the planet carrier 6, and the planet teeth 7 are meshed with the first gear 5.
The planetary gear set further comprises an internal gear ring 8, the internal gear ring 8 is fixed with the shell, and the internal gear ring 8 is meshed with the planetary gears 7. The internal tooth ring gear 8 has a circumferential limiting effect on the planet teeth 7 in the working process, so that the planet teeth 7 run stably.
When the rotor 3 rotates, the first gear 5 rotates along with the rotor 3, the first gear 5 drives the planet gear 7 to rotate, the planet gear 7 drives the planet carrier 6 to rotate, and the planet carrier 6 drives the output shaft 4 to rotate. The utility model discloses the torque that will rotate the output transmits output shaft 4 through first gear 5 and planetary mechanism, at this in-process, because the rotational speed of first gear 5 and planet tooth 7 is inequality to the rotational speed that makes output shaft 4 is inequality with rotor 3's rotational speed (output shaft 4's the relative rotor in commentaries on classics area sets to can be as required to slow down, also can be with higher speed), like this the utility model discloses carry out structural advantage at motor inside, make output shaft 4's moment of torsion obtain the adjustment as required.
Claims (5)
1. A motor comprises a shell, a stator, a rotor and an output shaft, wherein the output shaft is rotatably arranged on the shell; also comprises
The first gear is sleeved on the output shaft in an empty mode and is fixedly connected with the rotor;
the planetary mechanism comprises a planet carrier and planet gears connected to the planet carrier, the planet carrier is fixedly connected with the output shaft, the planet gears are fixedly connected with the planet carrier, and the planet gears are meshed with the first gear.
2. The electric machine of claim 1 further comprising an internally toothed ring gear fixed to the housing, the internally toothed ring gear meshing with the planet teeth.
3. The motor according to claim 1 or 2, wherein the stator includes a core, and a connection portion, the connection portion being fixed to the core, and one end of the core being fixed to the housing.
4. The motor of claim 1 or 2, wherein the stator is provided with a central hole, and one end of the output shaft passes through the central hole of the stator and then is rotatably matched with the shell.
5. The motor of claim 1 or 2, wherein the rotor comprises a rotor body and a mounting portion, the rotor body is provided with a containing cavity, the mounting portion is located in the containing cavity and fixed with the rotor body, the mounting portion is provided with a mounting hole, and at least one part of the stator is located in the containing cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921838678.1U CN210693674U (en) | 2019-10-29 | 2019-10-29 | Electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921838678.1U CN210693674U (en) | 2019-10-29 | 2019-10-29 | Electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210693674U true CN210693674U (en) | 2020-06-05 |
Family
ID=70887427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921838678.1U Active CN210693674U (en) | 2019-10-29 | 2019-10-29 | Electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210693674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114268182A (en) * | 2021-12-16 | 2022-04-01 | 广东威灵电机制造有限公司 | In-wheel motors and electric vehicles |
-
2019
- 2019-10-29 CN CN201921838678.1U patent/CN210693674U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114268182A (en) * | 2021-12-16 | 2022-04-01 | 广东威灵电机制造有限公司 | In-wheel motors and electric vehicles |
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