CN200999796Y - Bearing assembly and self sealing oil-containing kinetic pressure bearing - Google Patents
Bearing assembly and self sealing oil-containing kinetic pressure bearing Download PDFInfo
- Publication number
- CN200999796Y CN200999796Y CNU2006201734963U CN200620173496U CN200999796Y CN 200999796 Y CN200999796 Y CN 200999796Y CN U2006201734963 U CNU2006201734963 U CN U2006201734963U CN 200620173496 U CN200620173496 U CN 200620173496U CN 200999796 Y CN200999796 Y CN 200999796Y
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- bearing
- grooves
- rotating shaft
- intermediate portion
- inwall
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Abstract
The utility model discloses a self compact oil-impregnated dynamic pressure bearing. A rotating axle is penetrated through, and the bearing comprises a main body and a dynamic pressure structure. The main body is a hollow circular column and has a through hole, and the rotating axle is penetrated on the rotating axle; the main body is divided into a first end part, a middle part and a second part along the axle rotation direction. The dynamic pressure structure has a plurality of grooves, and the grooves are arranged on the inner wall of the middle part.
Description
Technical field
The utility model relates to a kind of hydraulic bearing, particularly relates to a kind of from close property oil-containing hydraulic bearing.
Background technique
For the rotating speed in response to various motors, the kind of bearing is consequentiality just, and often (Fluid Dynamic Bearing FDB) provides the lubricated of rotating shaft necessity to prior art with hydrodynamic bearing.Please refer to shown in Figure 1A, a kind of existing oil-containing hydraulic bearing 1 mainly comprises a body 10, and body 10 has two ends 11,13 and an intermediate portion 12.The internal face of this each end 11,13 forms a plurality of pressure ditches 14, and this respectively presses ditch 14 to can be man type, V font, fishbone, twill or vertical bar line.Intermediate portion 12 forms oil storage tank, so that the lubricated of rotating shaft necessity to be provided.Please refer to shown in Figure 1B, when a rotating shaft s turns round, press ditch 14 to drive lubricating fluid o and produce active force f stepless action, to provide rotating shaft s to lubricate and to support in the periphery of rotating shaft s.
Yet, along with the running of rotating shaft s, no matter this respectively presses ditch 14 how to design, lubricating fluid o axially leaks outside along rotating shaft s's, press and can produce axial leakage, cause the lubricated of oil-containing hydraulic bearing 1 and support the effectiveness reduction, influence the reliability and the working life of oil-containing hydraulic bearing 1.
Therefore, how to provide a kind of and press with the axial leakage that prevents lubricant oil, keep stable lubricated and supporting effect, the reliability and the working life of promoting bearing, become one of important topic from close property oil-containing hydraulic bearing.
The model utility content
It is a kind of from close property oil-containing hydraulic bearing that the purpose of this utility model is to provide, and by the structural design of bearing body, presses with the axial leakage that prevents lubricant oil, keeps stable lubricated and supporting effect, the reliability and the working life of promoting bearing.
It is a kind of from close property oil-containing hydraulic bearing that a purpose more of the present utility model is to provide, and by the structural design of bearing body collocation rotating shaft, presses with the axial leakage that prevents lubricant oil, keeps stable lubricated and supporting effect, the reliability and the working life of promoting bearing.
The purpose of this utility model is achieved in that and provides promptly that a kind of it is worn by a rotating shaft from close property oil-containing hydraulic bearing that bearing comprises a body and a hydrodynamic configuration.Body is the hollow ring column and has a perforation, and rotating shaft is arranged in perforation, and body is divided into a first end, an intermediate portion and a second end along rotor shaft direction.Hydrodynamic configuration has a plurality of grooves, and this each groove is arranged at the inwall of the intermediate portion of bearing.
For reaching above-mentioned purpose, from close property oil-containing hydraulic bearing, it is worn by a rotating shaft according to another kind of the present utility model, and bearing comprises a body and a hydrodynamic configuration.Body is the hollow ring column and has a perforation, and rotating shaft is arranged in perforation, and body is divided into a first end, an intermediate portion and a second end along rotor shaft direction.Hydrodynamic configuration has a plurality of grooves, and this each groove is arranged at the outer wall of rotating shaft and the intermediate portion of corresponding bearing.
From the above, advantage of the present utility model is, it is a kind of that it provided is by hydrodynamic configuration being arranged at the inwall of the intermediate portion of bearing body from close property oil-containing hydraulic bearing, or hydrodynamic configuration is arranged at the outer wall of rotating shaft and the intermediate portion of corresponding bearing, have the minimum clearance of approximate sealing between two ends of bearing body and the rotating shaft.Be compared to prior art, the utility model can effectively prevent the axial leakage pressure of lubricant oil, keeps stable fluid pressure, makes from close property oil-containing hydraulic bearing stable lubricated and radial support is provided, and increases the reliability and the working life of bearing.
Description of drawings
Figure 1A is a kind of existing oil-containing hydraulic bearing;
When Figure 1B has the oil-containing hydraulic bearing now for rotating shaft is arranged in, the schematic representation of running distribution of forces;
Fig. 2 is the utility model first embodiment's the part sectional drawing from close property oil-containing hydraulic bearing;
Fig. 3 A is the schematic representation of intermediate portion from close property oil-containing hydraulic bearing shown in Figure 2;
Fig. 3 B for Fig. 3 A from the intermediate portion sectional view of close property oil-containing hydraulic bearing after rotating shaft wears;
Fig. 4 A is the schematic representation of a bearing unit of the present utility model; And
Fig. 4 B for Fig. 4 A from the intermediate portion sectional view of close property oil-containing hydraulic bearing after rotating shaft wears.
The primary component symbol description:
1 oil-containing hydraulic bearing, 24,34 hydrodynamic configuration
2,3 from close property oil-containing hydraulic bearing 25 perforation
10,20,30 bodies, 21 inwalls
11,13 ends, 240,340 grooves
12,22,32 intermediate portion f, F, F ' active force
14 press ditch o, O, O ' lubricating fluid
21,31 first end s, S, S ' rotating shaft
23,33 the second ends
Embodiment
Hereinafter with reference to correlative type, a kind of from close property oil-containing hydraulic bearing according to the utility model embodiment is described, wherein identical assembly will be illustrated with identical reference marks.
First embodiment
Please refer to shown in Figure 2ly, a kind of part sectional drawing from close property oil-containing hydraulic bearing of the utility model first embodiment, bearing 2 are worn by a rotating shaft (figure show) and are comprised a body 20 and a hydrodynamic configuration 24.Body 20 is for the hollow ring column and have a perforation 25 and wear for rotating shafts.Body 20 can be divided into a first end 21, an intermediate portion 22 and a second end 23 vertically.In the present embodiment, the inwall of first end 21 and the second end 23 is a positive arc structure.Be noted that the aperture of first end 21 and the second end 23 is slightly larger than the diameter of rotating shaft,, prevent that the axial leakage of lubricant oil from pressing so that have the minimum clearance of approximate sealing between the inwall of the first end 21 of rotating shaft and body 20 and the second end 23.
Fig. 3 A shows the schematic representation from the intermediate portion of close property oil-containing hydraulic bearing.As shown in Figure 3, the distribution of each groove 240 of this of hydrodynamic configuration 24 is to be symmetrical distribution, and set-up mode can be and is provided with at interval or is provided with continuously; Groove shape can be oblique arcuation groove or straight arcuation groove, and the distance of groove and rotating shaft is for changing, and is for example cumulative or decrescence; And groove can be set in parallel with rotor shaft direction, also can be oblique setting with rotor shaft direction, that is groove can similar spiral way be arranged at the inwall 221 of intermediate portion 22.In the present embodiment, this each groove 240 is oblique arcuation groove, and is symmetrical distribution, and it is approximately equal to stride the central angle that accounts for respect to the axle center.The distance of each oblique arcuation groove 240 and rotating shaft is decrescence along the sense of rotation of rotating shaft, and this each oblique arcuation groove 240 is for being arranged at intervals at the circular-arc inwall 221 of intermediate portion 22.
Fig. 3 B shows from the intermediate portion sectional view of close property oil-containing hydraulic bearing after rotating shaft wears.Shown in Fig. 3 B, a rotating shaft S wears the perforation 25 from close property oil-containing hydraulic bearing 2.When rotating shaft S when counterclockwise turning round, the lubricating fluid O of the inwall 221 of rotating shaft S and body 20 is driven by rotating shaft S, owing to each oblique arcuation groove 240 of hydrodynamic configuration 24 with respect to the distance of rotating shaft S sense of rotation for decrescence.At this moment, lubricating fluid O is adjacent to inwall 221 places at each oblique arcuation groove 240, because minimum with the distance of rotating shaft S, lubricating fluid O produces a maximum radial directed force F with respect to rotating shaft S, in order to rotating shaft S to be provided a support force.Because this each oblique arcuation groove 240 symmetries are spaced apart in the inwall 221 of intermediate portion 22, this each directed force F is in state of equilibrium, make rotating shaft S can be according to its axle center rotation beat not.In addition, along with the interaction effect of rotating shaft S rotation with hydrodynamic configuration 24, just produce an axial pressure in rotor shaft direction, because first end 21 and the second end 23 there is no hydrodynamic configuration, just block the axial pressure that intermediate portion 22 produces, form a leakproof laminated structure, make from close property oil-containing hydraulic bearing 2 radially with all closed situation of axial pressure under, promote reliability and working life.
Second embodiment
Please refer to shown in Fig. 4 A and Fig. 4 B, it is a bearing unit of the present utility model, is made of from close property oil-containing hydraulic bearing 3 rotating shaft and.Comprise a body 30 and a hydrodynamic configuration 34 from close property oil-containing hydraulic bearing 3.In the present embodiment, the formation of body 30 and hydrodynamic configuration 34 is identical from close property oil-containing hydraulic bearing 2 with function and above-mentioned first embodiment's, so repeat no more.The present embodiment difference is: hydrodynamic configuration 34 is arranged at the outer wall of rotating shaft S ' and corresponding to the intermediate portion 32 of body 30.And have a plurality of oblique arcuation grooves 340.When rotating shaft S ' turned round in a clockwise direction, the rotating shaft S ' and the lubricating fluid O of the inwall of body 30 were subjected to rotating shaft S ' drive and since each oblique arcuation groove 340 of hydrodynamic configuration 34 with respect to the distance of the inwall of rotating shaft S ' sense of rotation and body 30 for decrescence.At this moment, lubricating fluid O ' is adjacent to the inwall place of body 30 at each oblique arcuation groove 340, because rotating shaft S ' is minimum with the distance of the inwall of body 30, lubricating fluid O ' generation one maximum radial directed force F ', rotating shaft S ' one can be provided stable support force equally, avoid the inwall of rotating shaft S ' friction body 30, promote reliability and working life.
In sum, of the present utility model a kind of be by a hydrodynamic configuration being arranged at the inwall of the intermediate portion of bearing body from close property oil-containing hydraulic bearing, or hydrodynamic configuration is arranged on the outer wall of rotating shaft and the intermediate portion of corresponding bearing, two ends of bearing body form closed shape.Be compared to prior art, the utility model can effectively prevent the axial leakage pressure of lubricant oil, keeps stable fluid pressure, makes from close property oil-containing hydraulic bearing stable lubricated and radial support is provided, and increases the reliability and the working life of bearing.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present utility model and category, and, all should be contained in the appended claim its equivalent modifications of carrying out or change.
Claims (26)
1. a bearing is worn by a rotating shaft, it is characterized in that, this bearing comprises: a body, and have a perforation and wear for this rotating shaft, this body is divided into a first end, an intermediate portion and a second end along this rotor shaft direction; And a hydrodynamic configuration, having a plurality of grooves, these a plurality of grooves are arranged at the inwall of this intermediate portion.
2. bearing as claimed in claim 1 is characterized in that, the inwall of this first end and this second end is a positive arc structure.
3. bearing as claimed in claim 1 is characterized in that, the aperture of this first end and this second end is slightly larger than the diameter of rotating shaft.
4. bearing as claimed in claim 3 is characterized in that, has the minimum clearance of approximate sealing between the inwall of this rotating shaft and this first end and this second end.
5. bearing as claimed in claim 1 is characterized in that, these a plurality of grooves are symmetrical distribution.
6. bearing as claimed in claim 1 is characterized in that, these a plurality of grooves are oblique arcuation or straight arcuation groove.
7. bearing as claimed in claim 6 is characterized in that, respectively the distance of these a plurality of grooves and this rotating shaft is cumulative or decrescence.
8. bearing as claimed in claim 7 is characterized in that, respectively the distance of these a plurality of grooves and this rotating shaft is along the sense of rotation of this rotating shaft and be decrescence.
9. bearing as claimed in claim 1 is characterized in that, these a plurality of grooves are to be provided with at interval or to be provided with continuously.
10. bearing as claimed in claim 1 is characterized in that, these a plurality of grooves and this rotor shaft direction are set in parallel.
11. bearing as claimed in claim 1 is characterized in that, these a plurality of grooves and this rotor shaft direction are oblique setting.
12. bearing as claimed in claim 11 is characterized in that, these a plurality of grooves are the inwalls that are arranged at this intermediate portion in a spiral manner.
13. bearing as claimed in claim 1 is characterized in that, comprises that more a lubricating fluid is distributed between these a plurality of grooves and this rotating shaft.
14. a bearing unit is characterized in that, comprising: a bearing; One body has a perforation and wears for this rotating shaft, and this body is divided into a first end, an intermediate portion and a second end along this rotor shaft direction; And a hydrodynamic configuration, having a plurality of grooves, these a plurality of grooves are arranged at the inwall of this intermediate portion.
15. bearing unit as claimed in claim 14 is characterized in that, the inwall of this first end and this second end is a positive arc structure.
16. bearing unit as claimed in claim 14 is characterized in that, the aperture of this first end and this second end is slightly larger than the diameter of rotating shaft.
17. bearing unit as claimed in claim 16 is characterized in that, has the minimum clearance of approximate sealing between the inwall of this rotating shaft and this first end and this second end.
18. bearing unit as claimed in claim 14 is characterized in that, these a plurality of grooves are symmetrical distribution.
19. bearing unit as claimed in claim 14 is characterized in that, these a plurality of grooves are oblique arcuation or straight arcuation groove.
20. bearing unit as claimed in claim 19 is characterized in that, respectively the distance of these a plurality of grooves and this rotating shaft is cumulative or decrescence.
21. bearing unit as claimed in claim 20 is characterized in that, respectively the distance of these a plurality of grooves and this rotating shaft is along the sense of rotation of this rotating shaft and be decrescence.
22. bearing unit as claimed in claim 14 is characterized in that, these a plurality of grooves are to be provided with at interval or to be provided with continuously.
23. bearing unit as claimed in claim 14 is characterized in that, these a plurality of grooves and this rotor shaft direction are set in parallel.
24. bearing unit as claimed in claim 14 is characterized in that, these a plurality of grooves and this rotor shaft direction are oblique setting.
25. bearing unit as claimed in claim 24 is characterized in that, these a plurality of grooves are the inwalls that are arranged at this intermediate portion in a spiral manner.
26. bearing unit as claimed in claim 14 is characterized in that, comprises that more a lubricating fluid is distributed between these a plurality of grooves and this rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201734963U CN200999796Y (en) | 2006-12-28 | 2006-12-28 | Bearing assembly and self sealing oil-containing kinetic pressure bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201734963U CN200999796Y (en) | 2006-12-28 | 2006-12-28 | Bearing assembly and self sealing oil-containing kinetic pressure bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200999796Y true CN200999796Y (en) | 2008-01-02 |
Family
ID=39014203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201734963U Expired - Fee Related CN200999796Y (en) | 2006-12-28 | 2006-12-28 | Bearing assembly and self sealing oil-containing kinetic pressure bearing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200999796Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104535A (en) * | 2011-11-10 | 2013-05-15 | 奇鋐科技股份有限公司 | Shaft center structure and heat dissipation fan thereof |
| CN103104536A (en) * | 2011-11-10 | 2013-05-15 | 奇鋐科技股份有限公司 | Bearing structure and heat dissipation fan thereof |
| TWI509160B (en) * | 2011-11-10 | 2015-11-21 | Asia Vital Components Co Ltd | Bearing structure and cooling fan using same |
| CN105134642A (en) * | 2015-08-24 | 2015-12-09 | 联想(北京)有限公司 | Bearing, fan and rotating device |
-
2006
- 2006-12-28 CN CNU2006201734963U patent/CN200999796Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104535A (en) * | 2011-11-10 | 2013-05-15 | 奇鋐科技股份有限公司 | Shaft center structure and heat dissipation fan thereof |
| CN103104536A (en) * | 2011-11-10 | 2013-05-15 | 奇鋐科技股份有限公司 | Bearing structure and heat dissipation fan thereof |
| TWI509160B (en) * | 2011-11-10 | 2015-11-21 | Asia Vital Components Co Ltd | Bearing structure and cooling fan using same |
| CN105134642A (en) * | 2015-08-24 | 2015-12-09 | 联想(北京)有限公司 | Bearing, fan and rotating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080102 Termination date: 20151228 |
|
| EXPY | Termination of patent right or utility model |