CN210246534U - Shaft-shifting type variable-speed outer rotor motor - Google Patents
Shaft-shifting type variable-speed outer rotor motor Download PDFInfo
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- CN210246534U CN210246534U CN201921598513.1U CN201921598513U CN210246534U CN 210246534 U CN210246534 U CN 210246534U CN 201921598513 U CN201921598513 U CN 201921598513U CN 210246534 U CN210246534 U CN 210246534U
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- outer rotor
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- output shaft
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Abstract
The utility model relates to a shaft-moving type variable-speed outer rotor motor, which comprises a fixed frame, a stator and an outer rotor, wherein the stator is fixedly arranged on the fixed frame, the outer rotor is rotatably arranged on the fixed frame and surrounds the stator, the stator is conductive, and the outer rotor rotates around the stator; the outer rotor motor also comprises a shaft sleeve and an output shaft, wherein the shaft sleeve sequentially penetrates through the fixing frame and the outer rotor to extend out, is fixedly connected with the outer rotor, is connected with the fixing frame in a rotating fit manner and rotates along with the outer rotor, the output shaft penetrates through the shaft sleeve to extend out, is concentric with the shaft sleeve and is in clearance fit with the shaft sleeve, and the output shaft is connected with the shaft sleeve through a planetary gear and rotates in the same direction or in the opposite direction with the; the output shaft is axially and movably matched and connected with the planetary gear and driven by an external mechanism to axially reciprocate. The design is reasonable, the structure is simple, the output shaft can rotate or do axial reciprocating motion, and the stepless speed regulation range is enlarged.
Description
Technical Field
The utility model relates to an external rotor electric machine, concretely relates to shaft shifting type variable speed external rotor electric machine.
Background
For example, the direct drive type drilling machine or milling machine of the external rotor motor, CN201811395860.4, discloses a movable shaft type external rotor motor, which has stepless speed regulation and direct drive, fully embodies the working effects of small volume, large torque, light weight, high efficiency and energy saving, and is applied to products such as drilling machines and milling machines, but the power compensation of the control system at low speed is limited, and in practice, some occasions require lower rotating speed, and the control system cannot meet the requirement of adjusting the rotating speed.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model provides a shift shaft type variable speed external rotor electric machine.
The technical scheme of the utility model:
a shaft-shifting variable-speed outer rotor motor comprises a fixed frame, a stator and an outer rotor, wherein the stator is fixedly arranged on the fixed frame, the outer rotor is rotatably arranged on the fixed frame and surrounds the stator, the stator is conductive, and the outer rotor rotates around the stator; the outer rotor motor also comprises a shaft sleeve and an output shaft, wherein the shaft sleeve sequentially penetrates through the fixing frame and the outer rotor to extend out, is fixedly connected with the outer rotor, is connected with the fixing frame in a rotating fit manner and rotates along with the outer rotor, the output shaft penetrates through the shaft sleeve to extend out, is concentric with the shaft sleeve and is in clearance fit with the shaft sleeve, and the output shaft is connected with the shaft sleeve through a planetary gear and rotates in the same direction or in the opposite direction with the; the output shaft is axially and movably matched and connected with the planetary gear and driven by an external mechanism to axially reciprocate; the external mechanism is a human power or other mechanical device; preferably, the motor can be made into a totally-enclosed mode, a semi-enclosed mode and an open mode according to the use environment;
by adopting the structure, the output shaft can rotate or do axial reciprocating motion, and the speed change is realized based on the transmission ratio of the planetary gear, so that the stepless speed regulation range of the outer rotor motor is enlarged; the shaft sleeve and the output shaft are concentric and in clearance fit, so that the hollow gear shaft sleeve has a certain stabilizing effect on the hollow gear shaft sleeve when doing axial motion.
Furthermore, the planetary gear comprises a sun gear, a plurality of planetary gears, an inner gear ring and a planetary carrier, the inner gear ring is embedded on the fixed frame, the planetary carrier is rotatably installed on the fixed frame, the planetary gears are rotatably installed on the planetary carrier, all the planetary gears are distributed around one circumference of the planetary carrier and are respectively meshed with the inner gear ring, the sun gear is sleeved at the lower end of the shaft sleeve and is meshed with all the planetary gears, and the output shaft penetrates through the planetary carrier and is axially movably matched and connected with the planetary carrier; the output shaft rotates in the same direction as the outer rotor.
Furthermore, the planetary gear comprises a sun gear, a plurality of planet gears, an inner gear ring and an inner gear ring frame, the inner gear ring is embedded on the inner gear ring frame, the planet gears are rotatably arranged on the fixed frame and are respectively meshed with the inner gear ring, the sun gear is sleeved at the lower end of the shaft sleeve and is meshed with all the planet gears, and the output shaft penetrates through the outer gear frame and is axially movably matched and connected with the outer gear frame; the output shaft rotates in the opposite direction of the outer rotor.
Further, the shaft sleeve and the sun gear are integrally formed; considering that the size of the external rotor motor is small in the using environment, the installation space of the planetary gear is inevitably small, and the strength of the external rotor motor is ensured and the installation space requirement of the external rotor motor is greatly reduced by adopting an integrated forming design; preferably, the sun gear is milled at the lower end of the shaft sleeve.
Furthermore, a central hole is formed in the planet carrier, and a guide sleeve is arranged in the central hole; the guide sleeve is a spline sleeve, the output shaft is a spline shaft matched with the spline sleeve, or the guide sleeve is a key sleeve, and the output shaft is a shaft with a spline groove matched with the key sleeve; the output shaft penetrates through the guide sleeve and forms sliding key fit with the guide sleeve, namely the output shaft is in axial movable fit connection; therefore, the coaxiality of the motor and the planetary gear is ensured, the straightness of axial movement of the output shaft is also ensured, and the working precision is improved.
Furthermore, a central hole is formed in the outer gear carrier, and a guide sleeve is arranged in the central hole; the guide sleeve is a spline sleeve, the output shaft is a spline shaft matched with the spline sleeve, or the guide sleeve is a key sleeve, and the output shaft is a shaft with a spline groove matched with the key sleeve; the output shaft penetrates through the guide sleeve and forms sliding key fit with the guide sleeve, namely the output shaft is in axial movable fit connection; the coaxiality of the motor and the planetary gear is guaranteed, the straightness of axial movement of the output shaft is guaranteed, and the working precision is improved.
Furthermore, a planetary gear cover is further arranged on the fixed frame and is covered on the planetary gear.
The utility model has the advantages that, reasonable in design, simple structure, its output shaft can rotate or make axial reciprocating motion, and has increased its electrodeless speed governing scope.
Drawings
Fig. 1 is a shift shaft type variable speed outer rotor motor.
Fig. 2 is a schematic view of the planetary gear structure.
Fig. 3 is a schematic view of a bushing structure.
Fig. 4 is a schematic view of the output shaft structure.
In the figure, a fixed frame 1, a stator 2, an outer rotor 3 and a shaft sleeve 4 output 5 a planetary gear 6, a sun gear 6-1 a planetary gear 6-2, an annular gear 6-3 a planetary gear carrier 6-4 and a guide sleeve 7 a planetary gear cover 8.
Detailed Description
As shown in fig. 1-4, a shifting shaft type variable speed outer rotor motor comprises a fixed frame 1, a stator 2 and an outer rotor 3, wherein the stator 2 is fixedly arranged on the fixed frame 1, and the outer rotor 3 is rotatably arranged on the fixed frame 1 and surrounds the stator 2; the outer rotor motor also comprises a shaft sleeve 4 and an output shaft 5, wherein the shaft sleeve 4 sequentially penetrates through a fixed frame 1, the outer rotor 3 extends out, the outer rotor 3 is fixedly connected with the fixed frame 1 and is in rotating fit with the fixed frame, an output shaft 5 extends out through the shaft sleeve 4 and is in concentric and clearance fit with the shaft sleeve 4, the output shaft 5 is connected with the shaft sleeve 4 through a planetary gear 6, the planetary gear 6 comprises a sun gear 6-1, a plurality of planetary gears 6-2, an inner gear ring 6-3 and a planetary carrier 6-4, the inner gear ring 6-3 is embedded on the fixed frame 1, the planetary carrier 6-4 is rotatably arranged on the fixed frame 1, the planetary gears 6-2 are rotatably arranged on the planetary carrier 6-4, all the planetary gears 6-2 are distributed around the planetary carrier 6-4 in a circle and are respectively engaged with the inner, the planet carrier 6-4 is meshed with all the planet wheels 6-2, a central hole is formed in the planet carrier 6-4, and a guide sleeve 7 is arranged in the central hole; the guide sleeve 7 is a spline sleeve, and the output shaft 4 is a spline shaft matched with the spline sleeve; the output shaft 4 penetrates through the guide sleeve and forms sliding key fit with the guide sleeve 7; the shaft sleeve 4 and the sun gear 6-1 are integrally formed; the fixed frame 1 is also provided with a planetary gear cover 8, and the planetary gear cover 8 is covered on the planetary gear 6.
The above disclosure is only for the preferred embodiment of the present invention, but not intended to limit itself, and any changes and modifications made by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope of the present invention.
Claims (7)
1. A shaft-shifting variable-speed outer rotor motor comprises a fixed frame, a stator and an outer rotor, wherein the stator is fixedly arranged on the fixed frame, the outer rotor is rotatably arranged on the fixed frame and surrounds the stator, the stator is conductive, and the outer rotor rotates around the stator; the outer rotor motor is characterized by also comprising a shaft sleeve and an output shaft, wherein the shaft sleeve sequentially penetrates through the fixing frame and the outer rotor to extend out, is fixedly connected with the outer rotor, is connected with the fixing frame in a rotating fit manner and rotates along with the outer rotor; the output shaft is axially and movably matched and connected with the planetary gear and driven by an external mechanism to axially reciprocate.
2. The shift shaft type variable-speed outer rotor motor is characterized in that the planetary gear comprises a sun gear, a plurality of planetary gears, an inner gear ring and a planetary carrier, the inner gear ring is embedded on a fixed frame, the planetary carrier is rotatably mounted on the fixed frame, the planetary gears are rotatably mounted on the planetary carrier, all the planetary gears are distributed around the planetary carrier in a circle and are respectively in meshed connection with the inner gear ring, the sun gear is sleeved at the lower end of a shaft sleeve and is in meshed connection with all the planetary gears, and the output shaft penetrates through the planetary carrier and is in axially movable fit connection with the planetary carrier; the output shaft rotates in the same direction as the outer rotor.
3. The shift shaft type variable-speed outer rotor motor according to claim 1, wherein the planetary gear comprises a sun gear, a plurality of planetary gears, an inner gear ring and an inner gear ring frame, the inner gear ring is embedded on the inner gear ring frame, the planetary gears are rotatably mounted on the fixed frame and are respectively in meshed connection with the inner gear ring, the sun gear is sleeved at the lower end of the shaft sleeve and is in meshed connection with all the planetary gears, and the output shaft penetrates through the outer gear frame and is in axially movable fit connection with the outer gear frame; the output shaft rotates in the opposite direction of the outer rotor.
4. The shift shaft type variable speed outer rotor motor according to claim 2 or 3, wherein the sleeve is integrally formed with the sun gear.
5. The shift shaft type variable speed outer rotor motor according to claim 2, wherein the planet carrier is provided with a central hole, and a guide sleeve is arranged in the central hole; the guide sleeve is a spline sleeve, the output shaft is a spline shaft matched with the spline sleeve, or the guide sleeve is a key sleeve, and the output shaft is a shaft with a spline groove matched with the key sleeve; the output shaft penetrates through the guide sleeve and forms sliding key fit with the guide sleeve, namely the output shaft is in axial movable fit connection.
6. The shift shaft type variable speed outer rotor motor according to claim 3, wherein the outer gear carrier is provided with a central hole, and a guide sleeve is arranged in the central hole; the guide sleeve is a spline sleeve, the output shaft is a spline shaft matched with the spline sleeve, or the guide sleeve is a key sleeve, and the output shaft is a shaft with a spline groove matched with the key sleeve; the output shaft penetrates through the guide sleeve and forms sliding key fit with the guide sleeve, namely the output shaft is in axial movable fit connection.
7. The shift shaft type variable speed outer rotor motor according to claim 1, wherein a planetary gear cover is further provided on the fixed frame, and the planetary gear cover is fitted over the planetary gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921598513.1U CN210246534U (en) | 2019-09-25 | 2019-09-25 | Shaft-shifting type variable-speed outer rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921598513.1U CN210246534U (en) | 2019-09-25 | 2019-09-25 | Shaft-shifting type variable-speed outer rotor motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210246534U true CN210246534U (en) | 2020-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921598513.1U Active CN210246534U (en) | 2019-09-25 | 2019-09-25 | Shaft-shifting type variable-speed outer rotor motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210246534U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112690084A (en) * | 2020-12-25 | 2021-04-23 | 绿友机械集团股份有限公司 | Lawn trimming hob driven by built-in external rotor motor and lawn maintenance tool |
-
2019
- 2019-09-25 CN CN201921598513.1U patent/CN210246534U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112690084A (en) * | 2020-12-25 | 2021-04-23 | 绿友机械集团股份有限公司 | Lawn trimming hob driven by built-in external rotor motor and lawn maintenance tool |
| CN112690084B (en) * | 2020-12-25 | 2022-08-26 | 绿友机械集团股份有限公司 | Lawn trimming hob driven by built-in external rotor motor |
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