CN220510917U - Rotor with cooling fan and gear hub motor - Google Patents
Rotor with cooling fan and gear hub motor Download PDFInfo
- Publication number
- CN220510917U CN220510917U CN202321953302.1U CN202321953302U CN220510917U CN 220510917 U CN220510917 U CN 220510917U CN 202321953302 U CN202321953302 U CN 202321953302U CN 220510917 U CN220510917 U CN 220510917U
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- China
- Prior art keywords
- rotor
- cooling fan
- hub motor
- driving motor
- motor
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- 238000001816 cooling Methods 0.000 title claims abstract description 63
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 238000009423 ventilation Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims 1
- 230000017525 heat dissipation Effects 0.000 description 14
- 238000004804 winding Methods 0.000 description 5
- 230000009194 climbing Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
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- Motor Or Generator Cooling System (AREA)
Abstract
The utility model discloses a rotor of a geared hub motor with a cooling fan, which comprises a rotor ring, a side radial plate and a bearing seat, wherein the inner circle of the rotor ring is fixedly provided with a permanent magnet, and the rotor is sleeved on a main shaft of the geared hub motor in a rolling way through two rows of bearings arranged in the bearing seat; the rotor is provided with a cooling fan, the cooling fan is provided with a plurality of cooling fan blades, the cooling fan blades are positioned on the outer circle of the bearing seat, the cooling fan blades rotate along with the rotor to generate air flow, heat generated by the driving motor is discharged and transferred to peripheral components of the hub motor, and the temperature rise inside the hub motor is controlled.
Description
Technical Field
The utility model relates to the technical field of motors of electric bicycles, in particular to a rotor of a geared hub motor.
Background
The gear hub motor is like a Chinese patent CN03127256.8, an outer rotor motor and a planetary gear speed reducing mechanism are arranged in a motor shell, the speed reducing mechanism has a one-way clutch function, hysteresis resistance is not affected, the running and riding of the motor can be well performed in starting, climbing and electroless states of the motor, various riding modes of 'manpower and electric power' can be realized, but the gear hub motor is limited by the lubrication technology of the speed reducing mechanism, a planetary gear made of polymer materials is generally adopted at present, the motor shell is small in size and low in heat dissipation speed, the application field is basically limited to light vehicles such as power-assisted electric bicycles with narrow tires and large diameters, and rated power is set between 200W and 300 according to different input voltages and cannot be directly used for new national standard electric vehicles. The gear hub motor capable of realizing manual riding is applied to a new national standard vehicle, the rated power of the gear hub motor needs to be improved to meet the national standard upper limit requirement of 400w, and the heat dissipation of the motor is particularly important when riding in conditions of carrying goods by a cyclist, high temperature, continuously ascending a slope and the like.
The current production technical conditions are that the motor is lack of structural technology capable of generating effective circulating air flow in the inner space of the hub motor, and the motor is easy to burn and damage in high-temperature environment, continuous climbing and riding with people and goods.
Disclosure of Invention
The utility model aims to provide a rotor with a cooling fan, which enables the heat of a geared hub motor to be quickly conducted from an iron core and a winding of a stator to a motor hub and left and right end covers, and effectively controls the temperature rise of the hub motor.
For this purpose, the utility model provides the following scheme:
the rotor comprises a rotor ring, a side radial plate and a bearing seat, wherein the inner circle of the rotor ring is fixedly provided with a permanent magnet, and the rotor is sleeved on a main shaft of the gear hub motor in a rolling way through two rows of bearings arranged in the bearing seat;
the rotor is provided with a cooling fan, the cooling fan is provided with a plurality of cooling fan blades, the cooling fan blades are positioned on the outer circle of the bearing seat, the cooling fan blades rotate along with the rotor to generate air flow in the driving motor, heat generated by the driving motor is discharged and transferred to peripheral components of the hub motor, and the temperature in the hub motor is controlled to rise.
Preferably, the cooling fan is a radial-flow centrifugal fan, the cooling fan blade is perpendicular to the side web and connected with the side web, the cooling fan blade, the rotor ring, the side web and the bearing seat are integrally cast and formed, and cold air enters the driving motor along with the rotation of the cooling fan blade, so that heat generated by the driving motor is discharged.
Preferably, the cooling fan is a radial centrifugal fan, the cooling fan with the cooling fan blades being molded into an integral structure is sleeved on the outer circle of the bearing seat, and cold air enters the driving motor along with the rotation of the cooling fan blades, so that heat generated by the driving motor is discharged.
Preferably, the cooling fan is an axial fan, the cooling fan blade and the main shaft have blade angles smaller than 90 degrees, the cooling fan blade is molded into the cooling fan with an integrated structure, the cooling fan blade is sleeved and mounted on the outer circle of the bearing seat, the air flow direction generated by the cooling fan is axial, and cold air enters the motor from the stator core position of the driving motor and is discharged from the position near the main shaft of the stator of the driving motor.
Preferably, the side web is provided with a number of ventilation holes arranged in a circumferential array, through which the hot air conducts heat to the space outside the side web.
Compared with the prior art, the utility model has the following technical effects:
according to the rotor of the hub motor with the gear, disclosed by the utility model, on the basis that the heat dissipation mode of the hub motor in the prior art is mainly heat conduction and heat radiation, the heat dissipation mode of the hub motor with the heat dissipation fan is adopted, so that the heat convection heat dissipation mode which is higher in efficiency and mainly comprises the heat conduction mode is increased, and most of circulating air generated by the centrifugal heat dissipation fan or the axial flow heat dissipation fan passes through a high-temperature area such as an air gap space, a winding gap and a stator frame of the driving motor, so that the heat dissipation effect is obvious.
Drawings
FIG. 1 is a three-dimensional schematic of the present utility model;
FIG. 2 is a three-dimensional schematic view of a rotor with a radiator fan according to the present utility model;
fig. 3 is a schematic view of a geared hub motor having a rotor of a radiator fan in accordance with the present utility model.
Reference numerals illustrate: 1, a rotor; 2, a hub; 3, end covers; 4, a stator; 5 a stator frame; 6, a main shaft; 7 rotor rings; 8 side webs; 9 bearing seats; 10 permanent magnets; 11 bearings; 12 outer rings; 13 vent holes; 14 radiating fan blades; 15 air gap spaces; 16 an integral cooling fan.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
As shown in fig. 1 to 3, the present embodiment provides a rotor, which is a rotor 1 of a driving motor of a geared hub motor, wherein a stator 4 and a rotor 1 of the driving motor are arranged in a closed space formed by a hub 2 and an end cover 3 of the geared hub motor, the stator 4 is fixedly connected with a main shaft 6 through a stator frame 5, the rotor 1 comprises a rotor ring 7, a side web 8 and a bearing seat 9, a permanent magnet 10 is fixedly arranged on the inner ring of the rotor ring 7, the rotor 1 is sleeved on the main shaft 6 in a rolling manner through two rows of bearings 11 arranged in the bearing seat 9, the bearing seat 9 extends into an outer ring 12 of the stator frame 5 in the axial direction, and the side web 8 is provided with vent holes 13 arranged in a circumferential array; the rotor 1 is provided with a cooling fan, the cooling fan is provided with a plurality of cooling fan blades 14, the cooling fan blades 14 are positioned on the outer circle of the bearing seat 9, the cooling fan blades 14 rotate along with the rotor 1 to generate air flow in the driving motor, heat generated by the driving motor is discharged and transferred to peripheral components of the hub motor, and the temperature in the hub motor is controlled to rise.
Embodiment one:
as shown in fig. 1, the cooling fan and the rotor 1 are of an integral structure, the cooling fan is a radial flow type centrifugal fan, the cooling fan is provided with a plurality of cooling fan blades 14, the cooling fan blades 14 are perpendicular to the side web 8 and are connected with the side web 8, the cooling fan blades 14, the rotor ring 7, the side web 8 and the bearing seat 9 are integrally cast and formed, the diameter of the cooling fan is close to the inner diameter of the outer ring 12, radial air flow generated by wind sweeping of the cooling fan blades 14 circulates in the hub motor, the air flow axially passes through a coil winding gap of the stator 4 and an air gap space 15 between the stator and the permanent magnet 10, heat generated by the stator 4 is discharged and conducted to peripheral components of the hub motor, and the hot air conducts the heat to a space where a speed reducing mechanism on the left side of the side web 8 is located through a vent hole 13.
Embodiment two:
as shown in fig. 2 and 3, the cooling fan is a mixed-flow type fan, the diameter of the stator 4 is smaller, the distance between the outer circle of the bearing seat 9 and the outer ring 12 is not large, the integrated cooling fan 16 is sleeved and installed on the outer circle of the bearing seat 9, the radial width of the cooling fan blade 14 is small, the axial length is long, the cooling fan blade has a blade angle smaller than 90 degrees with the main shaft 6 in the axial direction, the wind expelling surface faces the side web 8, the cooling fan blade 14 generates axial air flow along with the rotation of the rotor 1, radial air flow is formed along the side web 8 to circulate in the hub motor, the air flow axially passes through the winding gap of the stator 4 and the air gap space 15 between the stator 4 and the permanent magnet 10, heat generated by the stator 4 is discharged and conducted to peripheral components of the hub motor, the side web 8 is also provided with a plurality of ventilation holes 13 which are circumferentially arranged in array, and the hot air is conducted to the space where a speed reducing mechanism on the left side of the side web is located.
It should be noted that, the blade angle opposite to the embodiment is taken between the heat dissipation blade 14 and the main shaft 6, the wind expelling direction of the heat dissipation blade is also opposite to the embodiment, the wind expelling surface of the heat dissipation blade is far away from the side web 8, the heat dissipation fan is an axial fan, and the cold air enters the driving motor from the coil winding gap of the stator 4 and the air gap space 15 between the stator and the permanent magnet 10, and is discharged from the vent hole 13 and the near main shaft of the stator frame 5 through the heat dissipation fan.
Claims (5)
1. The utility model provides a rotor that has radiator fan has gear hub motor, is the external rotor of driving motor in the electric bicycle has gear hub motor, the rotor includes rotor circle, side radials and bearing frame, the interior circle fixed mounting of rotor circle has the permanent magnet, the rotor is through installing two rows of bearings rolling sleeve joint in the bearing frame have gear hub motor's main shaft, characterized by:
the rotor is provided with a cooling fan, the cooling fan is provided with a plurality of cooling fan blades, the cooling fan blades are positioned on the outer circle of the bearing seat, the cooling fan blades rotate along with the rotor to generate air flow in the driving motor, heat generated by the driving motor is discharged and transferred to peripheral components of the hub motor, and the temperature in the hub motor is controlled to rise.
2. The rotor of a geared hub motor with a cooling fan according to claim 1, wherein the cooling fan is a radial centrifugal fan, the cooling fan blade is perpendicular to the side web and connected with the side web, the cooling fan blade, the rotor ring, the side web and the bearing housing are integrally cast, and cold air enters the driving motor along with the rotation of the cooling fan blade, and heat generated by the driving motor is discharged.
3. The rotor of a geared hub motor with a cooling fan according to claim 1, wherein the cooling fan is a radial centrifugal fan, the cooling fan having an integrated structure is formed by molding cooling blades, the cooling fan is sleeved on an outer circle of the bearing seat, and cool air enters the driving motor along with the rotation of the cooling blades, so that heat generated by the driving motor is discharged.
4. The rotor of a geared hub motor with a radiator fan according to claim 1, wherein the radiator fan is an axial fan, the radiator fan and the main shaft have a blade angle smaller than 90 degrees, the radiator fan is molded into an integral structure, the radiator fan is sleeved on an outer circle of the bearing seat, the air flow direction generated by the radiator fan is axial, and cold air enters the motor from a stator core position of the driving motor and is discharged from a position near the main shaft of the driving motor stator.
5. A rotor of a geared hub motor with a radiator fan according to claim 1, wherein the side web is provided with a plurality of ventilation holes arranged in a circumferential array.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321953302.1U CN220510917U (en) | 2023-07-24 | 2023-07-24 | Rotor with cooling fan and gear hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321953302.1U CN220510917U (en) | 2023-07-24 | 2023-07-24 | Rotor with cooling fan and gear hub motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220510917U true CN220510917U (en) | 2024-02-20 |
Family
ID=89867276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321953302.1U Active CN220510917U (en) | 2023-07-24 | 2023-07-24 | Rotor with cooling fan and gear hub motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220510917U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117856512A (en) * | 2024-03-04 | 2024-04-09 | 浙江弗尔德驱动科技有限公司 | New energy cooling tower permanent magnet motor with planetary driving mechanism |
-
2023
- 2023-07-24 CN CN202321953302.1U patent/CN220510917U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117856512A (en) * | 2024-03-04 | 2024-04-09 | 浙江弗尔德驱动科技有限公司 | New energy cooling tower permanent magnet motor with planetary driving mechanism |
| CN117856512B (en) * | 2024-03-04 | 2024-05-17 | 浙江弗尔德驱动科技有限公司 | New energy cooling tower permanent magnet motor with planetary driving mechanism |
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