CN106523528A - Oil-containing bearing used for brushless direct current motor - Google Patents
Oil-containing bearing used for brushless direct current motor Download PDFInfo
- Publication number
- CN106523528A CN106523528A CN201710033575.7A CN201710033575A CN106523528A CN 106523528 A CN106523528 A CN 106523528A CN 201710033575 A CN201710033575 A CN 201710033575A CN 106523528 A CN106523528 A CN 106523528A
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- CN
- China
- Prior art keywords
- bearing
- circle
- oil
- metal
- diameter
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/103—Construction relative to lubrication with liquid, e.g. oil, as lubricant retained in or near the bearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/24—Brasses; Bushes; Linings with different areas of the sliding surface consisting of different materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention provides an oil-containing bearing used for a brushless direct current motor. The oil-containing bearing is a copper-based powder pressing bearing and is in an overall cylinder shape. The oil-containing bearing is characterized by comprising an upper bearing ring, a lower bearing ring and a shaft hole; the lower end of the upper bearing ring is provided with a concave hollow area; the upper end of the lower bearing ring is provided with a convex entity; the diameter of the concave hollow area is smaller than that of the convex entity, and the depth of the concave hollow area is smaller than the height of the convex entity, so that interference connection of the lower bearing ring and the upper bearing ring is achieved; and the convex entity on the upper portion of the lower bearing ring is provided with a hollow area of which the diameter is larger than that of the shaft hole. The oil-containing bearing used for the brushless direct current motor has better sealing effect and can have larger oil storage space, and thus the service life of the bearing is further prolonged.
Description
Technical field
The invention belongs to field of bearings, more particularly to a kind of brshless DC motor oiliness bearing.
Background technology
The bearing of radiator fan is " heart " of radiator.At present, more generally hydraulic pressure (oil-containing) bearing, single rolling
Pearl bearing and double ball bearing.Although single ball bearing and double ball bearing abrasion resistant effect are more preferable so that the service life of fan
It is longer, but cost is also very high.Oiliness bearing, i.e. porous bearings, with metal dust as primary raw material, oiliness bearing is to use powder
The sintered body that last metallurgy method makes, its originally Porous, and also have in the fabrication process can freer adjustment apertures
Quantity, size, the technical advantage such as shape and distribution, with low cost, can absorbing, noise it is little, in the longer working time
It is interior without plus the features such as lubricating oil.And the major technique defect that brshless DC motor oiliness bearing faces at present is：How
Overcome the evaporation problems of lubricating oil during bearing use；How the increase oil reserve of brshless DC motor oiliness bearing, enters
One step extends the service life of bearing.
The content of the invention
To solve an above-mentioned difficult problem, it is an object of the invention to a kind of brshless DC motor oiliness bearing is proposed, with more
Good sealing effectiveness, can have bigger oil storage space, so as to further extend the service life of bearing.Concrete technical scheme
It is as follows：
A kind of brshless DC motor oiliness bearing, is that Cu-base powder pressure ties bearing, generally cylindrical shape, its feature
It is：Including upper bearing (metal) circle, lower bearing circle and axis hole, the upper bearing (metal) circle lower end is provided with matrix hollow region, the lower bearing
Circle upper end is convex entity, the diameter of the diameter of the matrix hollow region less than convex entity, the matrix hollow region
Depth is connected with the interference of upper bearing (metal) circle for lower bearing circle less than the height of convex entity；The lower bearing circle top convex
Entity is provided with hollow region, the diameter with diameter greater than axis hole of the hollow region.
Preferably, installation gap is provided between the upper bearing (metal) circle and lower bearing circle.
Preferably, the upper bearing (metal) circle outside curve surface is provided with some line style oil storage tanks, for increasing lubricating oil contact
Area, stores more lubricating oil.
Preferably, the convex entity upper end of the lower bearing circle is provided with installation chamfering, when being connected to by interference mode
During the matrix hollow area of race ring, chamfering forms region of no pressure with matrix hollow area, for increasing lubricating oil storage area.
Preferably, the upper bearing (metal) loop material is red copper base；The lower bearing loop material is brass base.
The present invention has advantages below with prior art：
1., by arranging upper and lower two bearings circle, integral type oiliness bearing inner space is separated, the chamfering of convex entity
Arrange and cause the matrix hollow area of upper bearing (metal) circle and form toroidal cavity, after motor shaft insertion oiliness bearing, motor shaft and lower axle
One closing chamber in hollow region besieged city of the convex entity of circle is held, such motor shaft can store more lubricating oil；
2., when motor shaft is rotated, oil film is formed, under the action of the centrifugal force along motor shaft between motor shaft and oiliness bearing
Move upwards.Now because the loss of lubricating oil so that the internal pressure of oiliness bearing diminishes, and the lubricating oil on motor shaft exists
The low region of pressure can be flowed in the presence of atmospheric pressure, by the line style oil storage tank on oiliness bearing surface, is flowed in oiliness bearing
Portion, forms the self-loopa of lubricating oil, and then extends the service life of oiliness bearing.
Description of the drawings
Fig. 1 is a kind of schematic three dimensional views of brshless DC motor oiliness bearing proposed by the present invention.
Fig. 2 is a kind of top view of brshless DC motor oiliness bearing proposed by the present invention.
Fig. 3 is a kind of A A profiles of brshless DC motor oiliness bearing proposed by the present invention.
Fig. 4 is a kind of size relationship of brshless DC motor oiliness bearing proposed by the present invention.
Description of reference numerals：
1 axis hole, 2 upper bearing (metal) circles, 3 chamferings, 4 hollow regions, 5 lower bearing circles, 6 install gap, 7 line style grooves.
Specific embodiment
The implementation process of the present invention is illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1, 2, 3, a kind of brshless DC motor oiliness bearing, is Cu-base powder pressure knot bearing, generally justifies
Cylinder body shape, it is characterised in that：Including upper bearing (metal) circle 2, lower bearing circle 5 and axis hole 1,2 lower end of upper bearing (metal) circle is provided with matrix
Hollow region, 5 upper end of lower bearing circle are convex entity, and the diameter e of the matrix hollow region is slightly less than convex entity
Diameter f, depth d of the matrix hollow region are slightly less than the height c of convex entity, for lower bearing circle and the mistake of upper bearing (metal) circle
It is full of connection；The lower bearing circle top convex entity is provided with hollow region 4, and the diameter b of the hollow region is slightly larger than axis hole
Diameter a.
As shown in figure 4, in the present embodiment, a:b:c:d:e:F=15:17:11:11.5:30:30.1, the hollow area
The height in domain 4 is 15.5 long measures.
Preferably, installation gap 6 is provided between the upper bearing (metal) circle 2 and lower bearing circle 5, from aforementioned proportion relation,
The length for installing gap 6 is the long measure of d c, i.e., 0.5.
Preferably, the outside curve surface of the upper bearing (metal) circle 2 is provided with some line style oil storage tanks, in the present embodiment, is
For increasing lubricating oil contact area, more lubricating oil are stored.
Preferably, the convex entity upper end of the lower bearing circle 5 is provided with installation chamfering 3, when being connected to by interference mode
During the matrix hollow area of upper bearing (metal) circle, toroidal cavity can be formed after matrix hollow region and the installation of convex entity, for increasing profit
Lubricating oil storage area.
Preferably, the upper bearing (metal) loop material is red copper base, for the noise reduction of bearing；The lower bearing loop material is brass
Base, for improving the wearability of bearing.
A kind of brshless DC motor oiliness bearing, specific work process are as follows：By arranging upper and lower two bearings circle, by one
Body formula oiliness bearing inner space separates, convex entity chamfering 3 setting cause upper bearing (metal) circle 2 matrix hollow region with it is convex
Type entity can form toroidal cavity after installing., after axis hole 1 inserts oiliness bearing, motor shaft is convex with lower bearing circle for motor shaft
One closing chamber in hollow region besieged city of type entity, such motor shaft can store more lubricating oil.When motor shaft is rotated, electricity
Oil film is formed between arbor and oiliness bearing, under the action of the centrifugal force, lubricating oil is moved upwards along motor shaft.Now, oil-containing
Bearing is because the loss of lubricating oil causes internal pressure to diminish, and the lubricating oil on motor shaft can be flowed under atmospheric pressure
The low region of pressure, by the line style oil storage tank on oiliness bearing surface, and with many interporal lacunas of oiliness bearing, flows into oiliness bearing
Inside, forms the self-loopa of lubricating oil, and then extends the service life of oiliness bearing.
The preferred embodiment for the present invention is explained in detail above in conjunction with accompanying drawing, but the invention is not restricted to above-mentioned enforcement
Mode, in the ken that those of ordinary skill in the art possess, can be with the premise of without departing from present inventive concept
Make a variety of changes.
Many other changes and remodeling can be made without departing from the spirit and scope of the present invention.It should be appreciated that the present invention is not
It is limited to specific embodiment, the scope of the present invention is defined by the following claims.
Claims (4)
1. a kind of brshless DC motor oiliness bearing, is that Cu-base powder pressure ties bearing, generally cylindrical shape, and its feature exists
In：Including upper bearing (metal) circle, lower bearing circle and axis hole, the upper bearing (metal) circle lower end is provided with matrix hollow region, the lower bearing circle
Upper end is convex entity, the diameter of the diameter of the matrix hollow region less than convex entity, the depth of the matrix hollow region
Height of the degree less than convex entity；The lower bearing circle top convex entity is provided with hollow region, the diameter of the hollow region
More than the diameter of axis hole.
2. a kind of brshless DC motor oiliness bearing according to claim 1, it is characterised in that：The upper bearing (metal) circle with
Installation gap is provided between lower bearing circle.
3. a kind of brshless DC motor oiliness bearing according to claim 1, it is characterised in that：Outside the upper bearing (metal) circle
N-Side surf surface is provided with some line style oil storage tanks.
4. a kind of brshless DC motor oiliness bearing according to claim 1, it is characterised in that：The lower bearing circle
Convex entity upper end is provided with installation chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710033575.7A CN106523528A (en) | 2017-01-16 | 2017-01-16 | Oil-containing bearing used for brushless direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710033575.7A CN106523528A (en) | 2017-01-16 | 2017-01-16 | Oil-containing bearing used for brushless direct current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106523528A true CN106523528A (en) | 2017-03-22 |
Family
ID=58335519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710033575.7A Pending CN106523528A (en) | 2017-01-16 | 2017-01-16 | Oil-containing bearing used for brushless direct current motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106523528A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1122731A (en) * | 1997-06-30 | 1999-01-26 | Hitachi Powdered Metals Co Ltd | Porous composite bearing and manufacture thereof |
| US5895119A (en) * | 1995-11-30 | 1999-04-20 | Hitachi Powered Metals Co., Ltd. | Composite porous bearing |
| JP2002125344A (en) * | 2000-10-12 | 2002-04-26 | Hitachi Ltd | Magnetic disc device and disc-driving spindle motor |
| CN102480188A (en) * | 2010-11-25 | 2012-05-30 | 上海思考电子有限公司 | Motor, oil bearing and manufacturing method thereof |
| JP2016180427A (en) * | 2015-03-23 | 2016-10-13 | Ntn株式会社 | Bearing member of fluid dynamic pressure bearing device and manufacturing method thereof |
| CN206530604U (en) * | 2017-01-16 | 2017-09-29 | 江苏汇创机电科技股份有限公司 | A kind of brshless DC motor oiliness bearing |
-
2017
- 2017-01-16 CN CN201710033575.7A patent/CN106523528A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5895119A (en) * | 1995-11-30 | 1999-04-20 | Hitachi Powered Metals Co., Ltd. | Composite porous bearing |
| JPH1122731A (en) * | 1997-06-30 | 1999-01-26 | Hitachi Powdered Metals Co Ltd | Porous composite bearing and manufacture thereof |
| JP2002125344A (en) * | 2000-10-12 | 2002-04-26 | Hitachi Ltd | Magnetic disc device and disc-driving spindle motor |
| CN102480188A (en) * | 2010-11-25 | 2012-05-30 | 上海思考电子有限公司 | Motor, oil bearing and manufacturing method thereof |
| JP2016180427A (en) * | 2015-03-23 | 2016-10-13 | Ntn株式会社 | Bearing member of fluid dynamic pressure bearing device and manufacturing method thereof |
| CN206530604U (en) * | 2017-01-16 | 2017-09-29 | 江苏汇创机电科技股份有限公司 | A kind of brshless DC motor oiliness bearing |
Non-Patent Citations (1)
| Title |
|---|
| 贾成厂: "烧结金属含油轴承", 《金属世界》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |
|
| RJ01 | Rejection of invention patent application after publication |