CN215344281U - Permanent magnet synchronous motor with rear fan - Google Patents
Permanent magnet synchronous motor with rear fan Download PDFInfo
- Publication number
- CN215344281U CN215344281U CN202022635836.2U CN202022635836U CN215344281U CN 215344281 U CN215344281 U CN 215344281U CN 202022635836 U CN202022635836 U CN 202022635836U CN 215344281 U CN215344281 U CN 215344281U
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- rear end
- fan
- cover
- drive shaft
- heat dissipation
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Abstract
The utility model relates to a permanent magnet synchronous motor of a rear fan, which comprises a shell, wherein a front end cover and a rear end cover are arranged at the front end and the rear end of the shell, a stator, a rotor and a driving shaft are arranged in the shell, the driving shaft penetrates through the stator and the rotor, the front end and the rear end of the driving shaft are respectively fixedly connected with the front end cover and the rear end cover through bearings and oil seals, a fan cover is further arranged at the rear end of the rear end cover, a heat dissipation cavity is formed between the fan cover and the rear end cover, the rear end of the driving shaft extends into the heat dissipation cavity and is fixed on the fan cover through the bearings, a magnetic head is arranged at the rear end part of the driving shaft, the magnetic head is connected with a coding device, a fan is further arranged in the heat dissipation cavity, and the active heat dissipation is increased by improving the rear end structure of the motor, so that the service life of the motor is greatly prolonged.
Description
Technical Field
The utility model relates to an electric vehicle motor, in particular to a permanent magnet synchronous motor with a rear fan.
Background
In order to respond to the national call for energy conservation and emission reduction and more convenient travel, the purchase and utilization rate of electric vehicles at home and abroad are greatly increased, and the electric vehicle has the advantages of small and exquisite vehicle body, convenient parking, low use cost and the like. However, due to the fact that the technical levels of domestic electric vehicle manufacturers are different, many manufacturers only make articles on the appearance surface in order to further reduce the selling price of electric vehicle terminals, and the performance of core components such as motors cannot be improved in a delayed manner, so that many existing electric vehicles are poor in performance, high in noise, large in heat generation and short in service life.
The control of the heat productivity of the motor is always a difficult problem, the more complex the internal transmission structure is, the larger the heat productivity is, the longer the service life of the whole motor is influenced to a great extent, and usually, some passive heat dissipation structures are adopted to realize a small heat dissipation function, so that the significance is not great, and improvement is needed.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: in order to solve the problems in the background art, an improved permanent magnet synchronous motor of a rear fan is provided.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a permanent magnet synchronous motor of a rear fan comprises a shell, wherein a front end cover and a rear end cover are arranged at the front end and the rear end of the shell, a stator, a rotor and a driving shaft are arranged in the shell, the driving shaft penetrates through the stator and the rotor, the front end and the rear end of the driving shaft are fixedly connected with the front end cover and the rear end cover through bearings and oil seals respectively, a fan cover is further arranged at the rear end of the rear end cover, a heat dissipation cavity is formed between the fan cover and the rear end cover, the rear end of the driving shaft extends into the heat dissipation cavity in an extending mode and is fixed on the fan cover through the bearings, a magnetic head is arranged at the rear end of the driving shaft and is connected with a coding device, a fan is further arranged in the heat dissipation cavity, and the fan is fixedly sleeved on the driving shaft and synchronously rotates with the driving shaft;
furthermore, a dynamic balance adjusting block is arranged between the shell and the driving shaft, so that the driving shaft can stably and effectively rotate;
furthermore, the encoding device comprises a magnetic encoder connected with the magnetic head, wherein an encoder cover plate is arranged on the magnetic encoder and fixedly connected with the fan cover;
furthermore, the edge of the front end cover is uniformly provided with screw mounting holes according to the circumference, so that the front end cover is convenient to fixedly connect.
The utility model has the beneficial effects that: the utility model solves the defects in the background technology, realizes the rear fan by adding the fan cover and prolonging the mounting structure of the driving shaft, realizes the active heat dissipation function, greatly improves the heat dissipation effect of the motor, prolongs the service life, has simple structure and low cost, is very practical and is worth popularizing.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present invention;
fig. 2 is a schematic structural view of the front end cap of the present invention.
In the figure: 1. the magnetic encoder comprises a shell, 2 parts of a front end cover, 3 parts of a rear end cover, 4 parts of a stator, 5 parts of a rotor, 6 parts of a driving shaft, 7 parts of a bearing, 8 parts of an oil seal, 9 parts of a fan cover, 10 parts of a magnetic head, 11 parts of a fan, 12 parts of a dynamic balance adjusting block, 13 parts of a magnetic encoder, 14 parts of an encoder cover plate and 15 parts of screw mounting holes.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The embodiment of the permanent magnet synchronous motor of the utility model shown in fig. 1 comprises a casing 1, a front end cover 2 and a rear end cover 3 are arranged at the front end and the rear end of the machine shell 1, a stator 4, a rotor 5 and a driving shaft 6 are arranged in the machine shell 1, the driving shaft 6 penetrates through the stator 4 and the rotor 5, and the front end and the rear end of the front end cover are respectively fixedly connected with the front end cover 2 and the rear end cover 3 through a bearing 7 and an oil seal 8, the rear end of the rear end cover 3 is also provided with a fan cover 9, a heat dissipation cavity is formed between the fan cover 9 and the rear end cover 3, the rear end of the driving shaft 6 extends into the heat dissipation cavity and is fixed on the wind shield 9 through a bearing, the rear end part of the driving shaft 6 is provided with a magnetic head 10, the magnetic head 10 is connected with an encoding device, a fan 11 is also arranged in the heat dissipation cavity, and the fan 11 is fixedly sleeved on the driving shaft 6 and synchronously rotates with the driving shaft 6; a dynamic balance adjusting block 12 is arranged between the machine shell 1 and the driving shaft 6 to ensure that the driving shaft 6 rotates stably and effectively; the encoding device comprises a magnetic encoder 13 connected with the magnetic head 10, an encoder cover plate 14 is arranged on the magnetic encoder 13, and the encoder cover plate 14 is fixedly connected with the fan cover 9; the edge of the front end cover 2 is uniformly provided with screw mounting holes 15 according to the circumference, so that the fixed connection is facilitated.
While particular embodiments of the present invention have been described in the foregoing specification, the present invention is not limited to the specific embodiments, and modifications and variations of the foregoing detailed description can be made by those skilled in the art without departing from the spirit and scope of the utility model.
Claims (3)
1. The utility model provides a permanent magnet synchronous motor of rearmounted fan, includes casing (1), both ends are provided with front end housing (2) and rear end cap (3) around casing (1), casing (1) in be provided with stator (4), rotor (5) and drive shaft (6), drive shaft (6) pass stator (4), rotor (5) to its front and back both ends respectively through bearing (7) and oil blanket (8) with front end housing (2) and rear end cap (3) fixed connection, its characterized in that: the rear end of rear end housing (3) still be provided with fan housing (9), fan housing (9) with form the heat dissipation chamber between rear end housing (3), the rear end extension of drive shaft (6) stretch into in the heat dissipation chamber and fix through the bearing fan housing (9) are last, the rear end tip of drive shaft (6) be provided with magnetic head (10), magnetic head (10) be connected with the coding device, the heat dissipation intracavity still be provided with fan (11), fan (11) cup joint to be fixed drive shaft (6) go up and with drive shaft (6) synchronous rotation, casing (1) with still be provided with dynamic balance adjusting block (12) between drive shaft (6).
2. The permanent magnet synchronous motor of a rear fan according to claim 1, wherein: the encoding device comprises a magnetic encoder (13) connected with the magnetic head (10), an encoder cover plate (14) is arranged on the magnetic encoder (13), and the encoder cover plate (14) is fixedly connected with the fan cover (9).
3. The permanent magnet synchronous motor of a rear fan according to claim 1, wherein: the edge of the front end cover (2) is uniformly provided with screw mounting holes (15) according to the circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022635836.2U CN215344281U (en) | 2020-11-13 | 2020-11-13 | Permanent magnet synchronous motor with rear fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022635836.2U CN215344281U (en) | 2020-11-13 | 2020-11-13 | Permanent magnet synchronous motor with rear fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215344281U true CN215344281U (en) | 2021-12-28 |
Family
ID=79544671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022635836.2U Active CN215344281U (en) | 2020-11-13 | 2020-11-13 | Permanent magnet synchronous motor with rear fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215344281U (en) |
-
2020
- 2020-11-13 CN CN202022635836.2U patent/CN215344281U/en active Active
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