CN203596693U - External rotor motor - Google Patents
External rotor motor Download PDFInfo
- Publication number
- CN203596693U CN203596693U CN201320808121.XU CN201320808121U CN203596693U CN 203596693 U CN203596693 U CN 203596693U CN 201320808121 U CN201320808121 U CN 201320808121U CN 203596693 U CN203596693 U CN 203596693U
- Authority
- CN
- China
- Prior art keywords
- rotating shaft
- oil
- bearings
- oil storage
- stator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003860 storage Methods 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims description 11
- 239000003921 oil Substances 0.000 abstract description 27
- 239000010687 lubricating oil Substances 0.000 abstract description 6
- 239000000314 lubricant Substances 0.000 description 5
- 206010020843 Hyperthermia Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000036031 hyperthermia Effects 0.000 description 2
- 239000002923 metal particle Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000037250 Clearance Effects 0.000 description 1
- 230000035512 clearance Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Abstract
The utility model discloses an external rotor motor which comprises a rotor, a stator, a rotating shaft and an end cover, wherein the rotating shaft is installed on the center of the rotor and is matched with the stator through two bearing installed in a stator central sleeve, the outer wall of the rotating shaft is provided with an oil storage sleeve, the oil storage sleeve is arranged between the two bearings, and two ends of the oil storage sleeve are close to the bearings. According to the utility model, the oil storage sleeve is arranged on the outer wall of the rotating shaft, a lubricating oil is added through an oil feeding hole in the rotating shaft, and under the rotation of the rotating shaft, the lubricating oil in the oil storage sleeve enters the gaps between the bearings and bearing inner rings along the axial direction of the rotating shaft, so that the bearings and the bearing inner rings are fully lubricated, and oil films exists on the contact surfaces of the bearings and the bearing inner rings; in addition, the oil films themselves have certain supporting force, and the oil films can support the rotating shaft to a certain extent, so that axial runout and deflection movement of the rotating shaft cannot lead to dry friction, wear is avoided, and the problems that the motor is stuck or burned are reduced.
Description
Technical field
The utility model relates to a kind of motor, especially a kind of external rotor electric machine.
Background technology
Existing motor product, by the arrangement of stator and rotor, can be divided into inner rotor type motor and external-rotor motor.Inner rotor type motor rotor is rotatably installed in stator interior, and external-rotor motor rotor is rotatably installed in stator outside.Due to the design feature of external rotor electric machine, between rotating shaft and bearing inner race, by matched in clearance, exist certain gap between the two.When motor is in the process of running, due to the effect of magnetic field force, make external rotor in rotating, exist axial trace to beat, when manufacturing and the existence of concentricity error in the time of installation, cause external rotor also to exist beat motion radially, the axial runout of external rotor and radial beat motion all can pass to rotating shaft, making also synchronously to produce radial and axial trace between rotating shaft and bearing inner race moves, make rotating shaft and bearing inner race occur friction, produce localized hyperthermia, thereby friction simultaneously can make galling occur metal particle, localized hyperthermia can make rotating shaft and the too early damage of bearing, metal particle can aggravate the wearing and tearing between rotating shaft and bearing inner race, form vicious circle, finally can cause the stuck or scaling loss of motor.
Utility model content
The utility model technical issues that need to address be to provide a kind of can be to the external rotor electric machine that lubricating oil is provided between rotating shaft and bearing inner race for a long time.
For addressing the above problem, technical solution adopted in the utility model is: a kind of external rotor electric machine, comprise rotor, stator, rotating shaft and end cap, its shaft is arranged on rotor center, and coordinate with stator by two bearings that are arranged in stator center sleeve pipe, the outer wall of described rotating shaft is provided with the oil storage sleeve pipe of being made up of malthoid, oil storage sleeve pipe between two bearings and two ends and bearing adjacent.
This novel tank filler sleeve being arranged in rotating shaft that also comprises, tank filler sleeve is made up of radial hole and axial hole, and radial hole and axial hole are communicated with, and outer wall and oil storage sleeve pipe that wherein radial hole leads to rotating shaft join, and axial hole leads to rotating shaft top, for refueling.
Described end cap center is provided with a hole, and silk is installed plug on hole.
The beneficial effect that adopts technique scheme to produce is: the utility model is by arranging oil storage sleeve pipe at rotating shaft outer wall, simultaneously can be by being arranged on the tank filler sleeve charging-up lubricant oil in rotating shaft, lubricating oil in oil storage sleeve pipe is under the rotation of rotating shaft, lubricating oil axially supplements in the gap entering between rotating shaft and bearing inner race along rotating shaft, make sufficient lubrication between rotating shaft and bearing inner wall, make both contact-making surfaces exist oil film, because oil film itself exists certain support force, can carry out certain support by countershaft, make axial runout and the beat motion of rotating shaft can not cause dry friction, thereby there will not be wearing and tearing, reduce the problem of the stuck scaling loss of motor.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Wherein: 1, stator, 2, rotor, 3, plug, 4, rotating shaft, 5, oil storage sleeve pipe, 6, end cap, 7, tank filler sleeve.
Embodiment
Below in conjunction with accompanying drawing, utility model is described in further detail: as shown in Figure 1, this Novel external rotor motor comprises rotor 2, stator 1, rotating shaft 4, end cap 6 and tank filler sleeve 7, its shaft 4 is arranged on rotor 2 centers, and coordinate with stator 1 by two bearings that are arranged in stator center sleeve pipe, the outer wall of rotating shaft 4 is provided with the oil storage sleeve pipe 5 of being made up of malthoid, oil storage sleeve pipe 5 between two bearings and two ends and bearing adjacent, in oil storage sleeve pipe, store lubricating oil.Tank filler sleeve 7 is arranged in rotating shaft 4, and tank filler sleeve is made up of radial hole and axial hole, and radial hole and axial hole are communicated with, and outer wall and oil storage sleeve pipe 5 that wherein radial hole leads to rotating shaft 4 join, and axial hole leads to rotating shaft 4 tops, for refueling.The size of tank filler sleeve is not to affect the strength and stiffness of rotating shaft, and facilitate charging-up lubricant oil is standard simultaneously.
In order to facilitate charging-up lubricant oil, be provided with a hole at described end cap center, silk is installed plug on hole.
In order regularly to give motor charging-up lubricant oil, be provided with a hole at end cap 6 centers, silk is installed plug on hole.Take off plug, can give oil storage sleeve pipe 5 charging-up lubricant oils by tank filler sleeve 7.
Claims (3)
1. an external rotor electric machine, comprise rotor (2), stator (1), rotating shaft (4) and end cap (6), its shaft is arranged on rotor center, and coordinate with stator by two bearings that are arranged in stator center sleeve pipe, it is characterized in that: the outer wall of described rotating shaft (4) is provided with the oil storage sleeve pipe (5) of being made up of malthoid, oil storage sleeve pipe (5) between two bearings and two ends and bearing adjacent.
2. external rotor electric machine according to claim 1, characterized by further comprising the tank filler sleeve (7) being arranged in rotating shaft, tank filler sleeve is made up of radial hole and axial hole, radial hole and axial hole are communicated with, outer wall and oil storage sleeve pipe that wherein radial hole leads to rotating shaft join, axial hole leads to rotating shaft top, for refueling.
3. external rotor electric machine according to claim 1, is characterized in that described end cap (6) center is provided with a hole, and silk is installed plug (3) on hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320808121.XU CN203596693U (en) | 2013-12-11 | 2013-12-11 | External rotor motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320808121.XU CN203596693U (en) | 2013-12-11 | 2013-12-11 | External rotor motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203596693U true CN203596693U (en) | 2014-05-14 |
Family
ID=50677550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320808121.XU Expired - Fee Related CN203596693U (en) | 2013-12-11 | 2013-12-11 | External rotor motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203596693U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212676A (en) * | 2019-04-25 | 2019-09-06 | 南方电机科技有限公司 | A kind of rotation motor and equipment |
-
2013
- 2013-12-11 CN CN201320808121.XU patent/CN203596693U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212676A (en) * | 2019-04-25 | 2019-09-06 | 南方电机科技有限公司 | A kind of rotation motor and equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| C14 | Grant of patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20151211 |
|
| EXPY | Termination of patent right or utility model |