CN202348955U - Fluid hydrodynamic bearing and fluid hydrodynamic rotation shaft - Google Patents
Fluid hydrodynamic bearing and fluid hydrodynamic rotation shaft Download PDFInfo
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- CN202348955U CN202348955U CN201120318328XU CN201120318328U CN202348955U CN 202348955 U CN202348955 U CN 202348955U CN 201120318328X U CN201120318328X U CN 201120318328XU CN 201120318328 U CN201120318328 U CN 201120318328U CN 202348955 U CN202348955 U CN 202348955U
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- runner
- hydrodynamic
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- rotating shaft
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Abstract
The utility model discloses a fluid hydrodynamic bearing and a fluid hydrodynamic rotation shaft. The fluid hydrodynamic rotation shaft is arranged in a cavity in the fluid hydrodynamic bearing; a hydrodynamic groove is formed on the inner wall surface in the cavity of the fluid hydrodynamic bearing or outside the fluid hydrodynamic bearing; the hydrodynamic groove comprises multiple groups of flow channels which are formed at intervals; each group of flow channels comprise a first flow channel, a second flow channel and a guide flow channel; the first flow channel and the second flow channel are intersected to form a V-shaped structure; the guide flow channel is communicated with the intersection part of the first flow channel and the second flow channel; the guide flow channels in two adjacent groups of flow channels are not communicated; and therefore, due to the forming of the guide flow channels, the dynamic balance of lubrication fluid can be kept conveniently, the rotation accuracy of the fluid hydrodynamic rotation shaft is improved, the fluid hydrodynamic bearing and the fluid hydrodynamic rotation shaft have high wear-resisting property, the service life of the fluid hydrodynamic bearing and the fluid hydrodynamic rotation shaft is prolonged, and the leakage phenomenon of the lubrication fluid can be effectively avoided.
Description
Technical field
The utility model relates to the hydrodynamic pressure bearing art, refers in particular to high hydrodynamic pressure bearing of a kind of long service life and rotation precision and hydrodynamic rotating shaft.
Background technique
In the past for example in the hard disc motor normally used bearing be ball bearing; Yet; Because the abrasion condition of ball every ball when rolling is different; The flutter phenomenon that the meeting appearance can not be expected after use a period of time, these flutter phenomenon cause the read/write head derailing, if the excessive normal read-write of just can't carrying out of deviation has been operated.
Afterwards, hydrodynamic pressure bearing occurred, it is through in the dynamic pressure groove, filling the dynamically lubricating fluid; In the bearing play, produce the dynamic pressure effect of lubricating fluid; Thereby with non-contact mode support fluid dynamic pressure rotating shaft, it is adapted to high speed rotating, and has advantages such as high running accuracy, low noise and high working life; Thereby, substituted aforementioned ball bearing gradually.
To above-mentioned hydrodynamic pressure bearing, of the patent No. 200620101987.7, the two runners system in its every group of runner is obliquely installed into the splayed shape structure, and it is difficult to form the higher pressure point of building; And for example the patent No. is the dynamic pressure groove of 02292854.5 record, and its every group of runner roughly becomes the V-shape structure, and two runners are set up higher pressure with support fluid dynamic pressure rotating shaft in joint; But the dynamic pressure groove of this kind structure is not when the lubricating fluid pressure of two runners in every group of runner waits; The lubricating fluid of the runner that pressure is bigger is prone to reverse the inflow in the less runner of lubricating fluid pressure, is difficult to the original intersection's build-up pressure that is designed, thereby; The dynamical balance feature that is unfavorable for lubricating fluid; Influenced the rotation precision of hydrodynamic rotating shaft, and, also be prone to the lubricating fluid leakage phenomenon; And the patent No. 200410051160.5 and the patent No. 200680000504.7 described dynamic pressure grooves, it has played good leak preventing effect, and still, its all dynamic pressure groove communicates with each other, and is unfavorable for forming the stable higher pressure point of building.
By this, be badly in need of technological scheme that research makes new advances to solve above-mentioned deficiency.
The model utility content
In view of this; The utility model is to the disappearance of existing technology existence; Its main purpose provides a kind of hydrodynamic pressure bearing and hydrodynamic rotating shaft, and the rotation precision that it has improved the hydrodynamic rotating shaft has prolonged the working life of hydrodynamic pressure bearing and hydrodynamic rotating shaft; Simultaneously, effectively prevented the lubricating fluid leakage phenomenon.
For realizing above-mentioned purpose, the utility model adopts following technological scheme:
A kind of hydrodynamic pressure bearing, its inside have the cavity that supplies hydrodynamic rotating shaft installing, offer a plurality of dynamic pressure grooves that are used for the filling lubricating fluid on this cavity interior sidewall surface; This dynamic pressure groove includes the many groups runner that is provided with at interval; Every group of runner includes first flow, second runner and correcting runner, and this first flow crosses into V font structure with second runner, and this correcting runner is communicated in the intersection of the first flow and second runner; And the correcting runner in the two adjacent groups runner is not communicated with.
As a kind of preferred version, said correcting runner only is positioned at V font inside configuration or the outside that aforementioned first flow and second runner cross and form; Perhaps, aforementioned correcting runner one end is positioned at the V font inside configuration that first flow and second runner cross and form, and its other end is positioned at the cross V font structural outer of formation of first flow and second runner.
As a kind of preferred version, the said first flow and second runner are symplex structure with respect to aforementioned correcting runner.
As a kind of preferred version, said dynamic pressure groove is positioned near the aforementioned cavity end positions.
As a kind of preferred version, said many group runners along the circumferential direction distribute.
A kind of hydrodynamic rotating shaft; It is to be installed in the inner cavity of hydrodynamic pressure bearing; Offer a plurality of dynamic pressure grooves that are used for the filling lubricating fluid on this hydrodynamic rotating shaft outer side surface, this dynamic pressure groove includes the many groups runner that is provided with at interval, and every group of runner includes first flow, second runner and correcting runner; This first flow crosses into V font structure with second runner; This correcting runner is communicated in the intersection of the first flow and second runner, and the correcting runner in the two adjacent groups runner is not communicated with.
As a kind of preferred version, said correcting runner only is positioned at V font inside configuration or the outside that aforementioned first flow and second runner cross and form; Perhaps, aforementioned correcting runner one end is positioned at the V font inside configuration that first flow and second runner cross and form, and its other end is positioned at the cross V font structural outer of formation of first flow and second runner.
As a kind of preferred version, the said first flow and second runner are symplex structure with respect to aforementioned correcting runner.
As a kind of preferred version, said dynamic pressure groove is positioned near the aforementioned cavity end positions.
As a kind of preferred version, said dynamic pressure groove along the circumferential direction distributes.
After the utility model adopted technique scheme, its beneficial effect was that main system is through the setting of correcting runner; Help keeping the transient equiliblium of lubricating fluid; Improve the rotation precision of hydrodynamic rotating shaft, made hydrodynamic pressure bearing and hydrodynamic rotating shaft have the better wear resistance ability, prolonged both working life; Simultaneously, effectively prevented the lubricating fluid leakage phenomenon.
Be structure characteristic and the effect of more clearly setting forth the utility model, come the utility model is elaborated below in conjunction with accompanying drawing and specific embodiment.
Description of drawings
Fig. 1 is the perspective view of hydrodynamic pressure bearing among first kind of embodiment of the utility model;
Fig. 2 is the stereo dissected figure of hydrodynamic pressure bearing among first kind of embodiment of the utility model;
Fig. 3 is the schematic cross-section of hydrodynamic pressure bearing among first kind of embodiment of the utility model;
Fig. 4 is the assembling schematic representation of hydrodynamic pressure bearing (the dynamic pressure groove is arranged) and hydrodynamic rotating shaft (no dynamic pressure groove) among first kind of embodiment of the utility model;
Fig. 5 is the flow schematic diagram of lubricating fluid in the dynamic pressure groove among first kind of embodiment of the utility model;
Fig. 6 is the assembling schematic representation of hydrodynamic pressure bearing (no dynamic pressure groove) and hydrodynamic rotating shaft (the dynamic pressure groove is arranged) among first kind of embodiment of the utility model;
Fig. 7 is the decomposing schematic representation of hydrodynamic pressure bearing (the dynamic pressure groove is arranged) and hydrodynamic rotating shaft (the dynamic pressure groove is arranged) among first kind of embodiment of the utility model;
Fig. 8 is the stereo dissected figure when being concaved with annular groove on the hydrodynamic pressure bearing cavity medium position inwall among first kind of embodiment of the utility model;
Fig. 9 is the schematic cross-section when being concaved with annular groove on the hydrodynamic pressure bearing cavity medium position inwall among first kind of embodiment of the utility model;
Figure 10 is the perspective view of hydrodynamic pressure bearing among second kind of embodiment of the utility model;
Figure 11 is the stereo dissected figure of hydrodynamic pressure bearing among second kind of embodiment of the utility model;
Figure 12 is the schematic cross-section of hydrodynamic pressure bearing among second kind of embodiment of the utility model;
Figure 13 is the flow schematic diagram of lubricating fluid in the dynamic pressure groove among second kind of embodiment of the utility model;
Figure 14 is the schematic cross-section of hydrodynamic pressure bearing among the third embodiment of the utility model;
Figure 15 is the flow schematic diagram of lubricating fluid in the dynamic pressure groove among the third embodiment of the utility model.
The accompanying drawing identifier declaration:
10, hydrodynamic rotating shaft 101, annular groove
102, flute mark 11, dynamic pressure groove
111, first flow 112, second runner
113, correcting runner 113 ', the correcting runner
113 〞, correcting runner 20, hydrodynamic pressure bearing
21, dynamic pressure groove.
Embodiment
See also Fig. 1 to shown in Figure 9, it has shown first kind of embodiment's of the utility model concrete structure.
At first, see also shown in Figure 4ly, hydrodynamic pressure bearing 10 inside have a cavity, and this hydrodynamic rotating shaft 20 is installed in this cavity.We can be through only offering dynamic pressure groove 11 (as shown in Figure 4) on the cavity interior sidewall surface of hydrodynamic pressure bearing 10; Also can only on hydrodynamic rotating shaft 20 outer surfaces, offer dynamic pressure groove 21 (as shown in Figure 6); Perhaps; Respectively at offering dynamic pressure groove 11,21 (as shown in Figure 7) on the cavity interior sidewall surface of hydrodynamic pressure bearing 10 and on hydrodynamic rotating shaft 20 outer surfaces; Be filled with the dynamically lubricating fluid in this dynamic pressure groove 11,21; Utilize lubricating fluid between hydrodynamic rotating shaft 20 and hydrodynamic pressure bearing 10, to produce lubrication, with the collision and the friction of 10 of hydrodynamic pressure bearings, and hydrodynamic rotating shaft 20 is maintained within certain rotation precision when avoiding hydrodynamic rotating shaft 20 to rotate by the pressure and the damping characteristic of lubricating fluid foundation.
Focusing on of the utility model, the structural design of aforementioned dynamic pressure groove, at this, the dynamic pressure groove of offering on the cavity interior sidewall surface with hydrodynamic pressure bearing 10 11 is that example is explained.
To shown in Figure 5, this dynamic pressure groove 11 is positioned near the aforementioned cavity end positions, thereby sets up dynamic pressure in the cavity of hydrodynamic pressure bearing 10 respectively near end positions like Fig. 2.This dynamic pressure groove 11 includes the many groups runner that is provided with at interval; Should along the circumferential direction distribute by many group runners; Every group of runner includes first flow 111, second runner 112 and the correcting runner 113 that communicates with each other, and the outlet end of the outlet end of this first flow 111 and second runner 112 is intersected in the entry end of correcting runner 113.In present embodiment, the aforementioned first flow 111 and second runner 112 cross into V font structure, and aforementioned correcting runner 113 is positioned at this V font inside configuration, and aforementioned first flow 111 and second runner 112 are symplex structure with respect to aforementioned correcting runner 113.Lubricating fluid is respectively via first flow 111, second runner 112 and correcting runner 113; And in three's the big pressure of position foundation that crosses; With the rotation of support fluid dynamic pressure rotating shaft 20, the sense of rotation of this hydrodynamic rotating shaft 20 is identical in circumferentially with the flow direction of aforementioned lubricating fluid.
Need to prove to have aforementioned dynamic pressure groove 21 with spline structure when only being opened in aforesaid fluid dynamic pressure rotating shaft 20 outer surfaces (as shown in Figure 6), the sense of rotation of this hydrodynamic rotating shaft 20 and the flow direction of aforementioned lubricating fluid are opposite in circumferentially.Certainly; Flow direction respectively at offering 11,21 o'clock (as shown in Figure 7) these dynamic pressure groove 11 interior lubricating fluids of dynamic pressure groove on the cavity interior sidewall surface of hydrodynamic pressure bearing 10 and on hydrodynamic rotating shaft 20 outer surfaces is identical in circumferentially with the sense of rotation of hydrodynamic rotating shaft 20, and the sense of rotation of the flow direction of these dynamic pressure groove 21 interior lubricating fluids and hydrodynamic rotating shaft 20 is opposite in circumferentially.
In addition; Like Fig. 8 and shown in Figure 9; When being concaved with annular groove 101 on the aforementioned hydrodynamic pressure bearing 10 cavity medium position inwalls, the degree of depth of aforementioned dynamic pressure groove 11 obviously is shallower than the degree of depth of annular groove 101, thereby; When making dynamic pressure groove 11, can on annular groove 101 interior sidewall surface of hydrodynamic pressure bearing 10 cavity medium positions, not form like Fig. 8 and flute mark 102 shown in Figure 9.
Then; See also Figure 10 to shown in Figure 13; It has shown second kind of embodiment's of the utility model concrete structure; Compare with aforementioned first kind of embodiment, the difference of present embodiment is, the V font structural outer that this correcting runner 113 ' the be positioned at first flow 111 and second runner 112 cross.
Like Figure 14 and shown in Figure 15; It has shown the third embodiment's of the utility model concrete structure; Compare with aforementioned two kinds of embodiments; The difference of present embodiment is, this correcting runner 113 〞 one end is positioned at the V font inside configuration that first flow 111 and 112 of second runners cross and form, and its other end is positioned at the cross V font structural outer of formation of first flow 111 and 112 of second runners.
The design focal point of the utility model is; Main system helps keeping the transient equiliblium of lubricating fluid through the setting of correcting runner, has improved the rotation precision of hydrodynamic rotating shaft; Make hydrodynamic pressure bearing and hydrodynamic rotating shaft have the better wear resistance ability; Prolong both working life, simultaneously, effectively prevented the lubricating fluid leakage phenomenon.
The above; It only is the preferred embodiment of the utility model; Be not that the technical scope of the utility model is done any restriction; So every technical spirit according to the utility model all still belongs in the scope of the utility model technological scheme any trickle modification, equivalent variations and modification that above embodiment did.
Claims (10)
1. hydrodynamic pressure bearing; Its inside has the cavity that supplies hydrodynamic rotating shaft installing; Offer a plurality of dynamic pressure grooves that are used for the filling lubricating fluid on this cavity interior sidewall surface, it is characterized in that: this dynamic pressure groove includes the many groups runner that is provided with at interval, and every group of runner includes first flow, second runner and correcting runner; This first flow crosses into V font structure with second runner; This correcting runner is communicated in the intersection of the first flow and second runner, and the correcting runner in the two adjacent groups runner is not communicated with.
2. hydrodynamic pressure bearing according to claim 1 is characterized in that: said correcting runner only is positioned at V font inside configuration or the outside that aforementioned first flow and second runner cross and form; Perhaps, aforementioned correcting runner one end is positioned at the V font inside configuration that first flow and second runner cross and form, and its other end is positioned at the cross V font structural outer of formation of first flow and second runner.
3. hydrodynamic pressure bearing according to claim 1 is characterized in that: the said first flow and second runner are symplex structure with respect to aforementioned correcting runner.
4. hydrodynamic pressure bearing according to claim 1 is characterized in that: said dynamic pressure groove is positioned near the aforementioned cavity end positions.
5. hydrodynamic pressure bearing according to claim 1 is characterized in that: said many group runners along the circumferential direction distribute.
6. hydrodynamic rotating shaft; It is to be installed in the inner cavity of hydrodynamic pressure bearing; Offer a plurality of dynamic pressure grooves that are used for the filling lubricating fluid on this hydrodynamic rotating shaft outer side surface, it is characterized in that: this dynamic pressure groove includes the many groups runner that is provided with at interval, and every group of runner includes first flow, second runner and correcting runner; This first flow crosses into V font structure with second runner; This correcting runner is communicated in the intersection of the first flow and second runner, and the correcting runner in the two adjacent groups runner is not communicated with.
7. hydrodynamic rotating shaft according to claim 6 is characterized in that: said correcting runner only is positioned at V font inside configuration or the outside that aforementioned first flow and second runner cross and form; Perhaps, aforementioned correcting runner one end is positioned at the V font inside configuration that first flow and second runner cross and form, and its other end is positioned at the cross V font structural outer of formation of first flow and second runner.
8. hydrodynamic rotating shaft according to claim 6 is characterized in that: the said first flow and second runner are symplex structure with respect to aforementioned correcting runner.
9. hydrodynamic rotating shaft according to claim 6 is characterized in that: said dynamic pressure groove is positioned near the aforementioned cavity end positions.
10. hydrodynamic rotating shaft according to claim 6 is characterized in that: said dynamic pressure groove along the circumferential direction distributes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120318328XU CN202348955U (en) | 2011-08-29 | 2011-08-29 | Fluid hydrodynamic bearing and fluid hydrodynamic rotation shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120318328XU CN202348955U (en) | 2011-08-29 | 2011-08-29 | Fluid hydrodynamic bearing and fluid hydrodynamic rotation shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348955U true CN202348955U (en) | 2012-07-25 |
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ID=46537962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120318328XU Expired - Fee Related CN202348955U (en) | 2011-08-29 | 2011-08-29 | Fluid hydrodynamic bearing and fluid hydrodynamic rotation shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348955U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305237A (en) * | 2011-08-29 | 2012-01-04 | 姚文雪 | Fluid dynamic pressure bearing and fluid dynamic pressure shaft |
| CN109404416A (en) * | 2018-12-14 | 2019-03-01 | 中国船舶重工集团公司第七0七研究所 | A kind of hydrodynamic pressure bearing and its manufacturing method |
-
2011
- 2011-08-29 CN CN201120318328XU patent/CN202348955U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305237A (en) * | 2011-08-29 | 2012-01-04 | 姚文雪 | Fluid dynamic pressure bearing and fluid dynamic pressure shaft |
| CN109404416A (en) * | 2018-12-14 | 2019-03-01 | 中国船舶重工集团公司第七0七研究所 | A kind of hydrodynamic pressure bearing and its manufacturing method |
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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: 20120725 Termination date: 20150829 |
|
| EXPY | Termination of patent right or utility model |