CN100383422C - Combined type hydrodynamic bearing device and manufacturing method thereof - Google Patents
Combined type hydrodynamic bearing device and manufacturing method thereof Download PDFInfo
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- CN100383422C CN100383422C CNB2004100699582A CN200410069958A CN100383422C CN 100383422 C CN100383422 C CN 100383422C CN B2004100699582 A CNB2004100699582 A CN B2004100699582A CN 200410069958 A CN200410069958 A CN 200410069958A CN 100383422 C CN100383422 C CN 100383422C
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- bearing
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- combined type
- type hydrodynamic
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Abstract
The present invention relates to a combined type dynamic pressure bearing device which comprises a bearing sleeve forming a containing space and a hollow bearing formed by combining a plurality of bearing blocks, wherein the joint faces of any two adjacent bearing blocks are mutually sealed and have complementary shapes. The bearing formed by combination is positioned in the containing space of the bearing sleeve, and the outer surface of the bearing is tightly attached to the bearing sleeve, so that the positions of the bearing blocks are fixed, wherein the bearing blocks form a plurality of grooves, so that the inner surface of the bearing formed through combination has a plurality of dynamic pressure generating grooves used for containing liquid for lubrication.
Description
Technical field
The relevant a kind of Hydrodynamic bearing apparatus of the present invention, especially relevant a kind of Hydrodynamic bearing apparatus and manufacture method thereof that combines by a plurality of drive tab.
Background technique
In recent years, along with the microminiaturization (as motor or fan etc.) of various devices and member, the size of its inner employed bearing also must be dwindled thereupon, and is therefore also more and more higher for the requirement of the rotating accuracy of bearing.
Hydraulic bearing is a kind of at present commonly used small and possess high-precision bearing means, and its structure comprises bearing housing 11 and bearing 12 shown in Figure 1A and 1B.Bearing housing 11 has a containing space that can hold bearing 12, and bearing 12 is a hollow circuit cylinder, its outer surface and bearing housing 11 driving fits, and be formed with a plurality of dynamic pressures on its internal surface and produce grooves 13.Dynamic pressure produces the fluid that has lubricated usefulness in the groove 13, and when rotating, this fluid can flow because of shearing stress, thereby produces a dynamic pressure when axle center (figure does not show), can reach by this and support axle center and lubricated purpose.
When making above-mentioned hydraulic bearing, be the bearing that produces hollow earlier, utilize other instrument on the internal surface of bearing, to depict required dynamic pressure again and produce groove.Yet the lines that produces groove owing to dynamic pressure is very trickle, and the hollow space of adding bearing is narrow and small, and is therefore very difficult when forming dynamic pressure generation groove.Moreover, because producing groove, dynamic pressure can't form (promptly needing an extra step to form) simultaneously with bearing, therefore also cause the significantly reduction of production capacity.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of combined type hydrodynamic bearing device and manufacture method thereof, it can avoid traditional Hydrodynamic bearing apparatus to be difficult for processing and the problem of making.
According to combined type hydrodynamic bearing device of the present invention, comprise the hollow bearing that a bearing housing and that is formed with a containing space is combined by a plurality of drive tab, and the mutual driving fit in the mating face of wantonly two adjacent drive tab and its profile is complementary and shape this drive tab mating face is selected from broken line shape, curvilinerar figure or broken line shape and curved combination.The bearing that combines places the containing space of bearing housing, and its outer surface and bearing housing fit tightly, and the position of each drive tab is maintained fixed.Wherein, this drive tab is formed with a plurality of grooves, so that the internal surface of the bearing that combines has and a plurality ofly produces groove in order to hold lubricated dynamic pressure with fluid.
According to the manufacture method of combined type hydrodynamic bearing device of the present invention, comprise following steps: provide a bearing housing that is formed with a containing space; Form a plurality of drive tab, the shape of this drive tab is designed to the proper bearing that becomes a hollow capable of being combined with size, make up the mutual driving fit in mating face and its profile complementation of former two adjacent drive tab, the shape on the mating face of this drive tab is selected from broken line shape, curvilinerar figure or broken line shape and curved combination, and when the bearing that combines is inserted this containing space, its outer surface can fit tightly with bearing housing, and this drive tab is formed with a plurality of grooves, so that the internal surface of the bearing that combines has and a plurality ofly produces groove in order to hold lubricated dynamic pressure with fluid; This drive tab is combined as bearing; And bearing is inserted in the containing space of bearing housing, by the outer surface of bearing and bearing housing fits tightly and the position of this drive tab is maintained fixed.
By combined type hydrodynamic bearing device of the present invention and manufacture method thereof, can produce hydraulic bearing easily, and can significantly improve production capacity with dynamic pressure generation groove.
Description of drawings
Figure 1A is the schematic representation of existing Hydrodynamic bearing apparatus;
Figure 1B is the schematic representation after the bearing inner surface of Figure 1A launches;
Fig. 2 A is according to the schematic representation after the bearing combination of first embodiment of the invention;
Fig. 2 B is the schematic representation after each drive tab internal surface launches among Fig. 2 A;
Fig. 3 A is according to the schematic representation after the bearing combination of second embodiment of the invention;
Fig. 3 B is the schematic representation after each drive tab internal surface launches among Fig. 3 A;
Fig. 4 is the flow chart according to the manufacture method of combined type hydrodynamic bearing device of the present invention.
Embodiment
Next conjunction with figs. is described in detail preferred embodiment of the present invention, wherein identical assembly will be represented with similar sign.In addition, in order to will be clear that the structure that shows bearing means of the present invention, therefore bearing housing is not plotted in the accompanying drawing, its structure is identical with bearing housing 11 among Figure 1A.
Shown in Fig. 2 A, 2B, the bearing 22 of first embodiment of the invention is that drive tab 22a, 22b, the 22c by three shapes, all identical circular arc bulk of size combined, and the mutual driving fit in the mating face of adjacent drive tab and its profile complementation.For instance, the profile on the mating face 24 of drive tab 22b can with the profile complementation (being broken line shape) on the mating face 25 of drive tab 22c, therefore, all drive tab just can be formed the bearing 22 of hollow cylindrical after combination on the circumferential direction.Bearing 22 after the combination places the containing space of bearing housing, and the outer surface of bearing 22 and bearing housing fit tightly, so the position of each drive tab can be maintained fixed.
In addition, be formed with the groove 23 of a plurality of shape unanimities on each drive tab internal surface, the shape of groove 23 can be identical with the shape on each drive tab mating face (with this embodiment, be broken line shape) or different, so on the internal surface of the bearing after the combination 22, promptly have a plurality of equally distributed dynamic pressures and produce groove.
Must understand, in the above-described embodiments, the shape of the number of drive tab, size, shape, compound mode and groove is so to be provided with for the convenience on making herein.Yet this collocation method can change arbitrarily according to the actual demand of bearing.For instance, shown in Fig. 3 A and 3B, similar but drive tab 32a, 32b, 32c that vary in size are formed bearing 32 by three shapes, and the mating face of drive tab and groove 33 be shaped as curvilinerar figure; Certainly, also the mating face of drive tab can be designed to curvilinerar figure, the shape of groove 33 then be designed to broken line shape also can, but this just illustrates, embodiments of the present invention are not as limit.
Next the manufacture method of combined type hydrodynamic bearing device of the present invention is described by Fig. 4.At first, in step 41, provide a bearing housing with containing space.Then in step 42, form a plurality of drive tab, the shape of these drive tab is designed to the proper bearing that becomes a hollow capable of being combined with size, the mutual driving fit in mating face and its profile complementation in the former two adjacent drive tab of combination, and when the bearing that combines was inserted this containing space, its outer surface can fit tightly with this bearing housing.In addition, when forming drive tab, also on the internal surface of drive tab, form a plurality of grooves, so that the internal surface of the bearing that combines has a plurality of dynamic pressure generation grooves that hold lubricated with fluid.Then in step 43, formed drive tab is combined as required bearing.Thereafter, in step 44, the bearing that combines is inserted in the containing space of bearing housing and finish combined type hydrodynamic bearing device of the present invention, this moment, outer surface and the bearing housing owing to bearing fitted tightly, therefore the position of drive tab is maintained fixed, and does not need in addition drive tab to be binded or fixing step.
In step 42, can utilize mold, ejection formation or other method commonly used to form drive tab.In addition, the number of drive tab, size, shape, compound mode, change arbitrarily with the actual demand of the visual bearing of shape of groove.For instance, if required bearing is cylindric, drive tab can be formed the circular arc bulk, and on circumferential direction, be made up.In addition,, shape, big or small all identical drive tab can be formed, so only all drive tab can be produced with single equipment (as mould) in order further to simplify preparation process and to improve production capacity.Moreover the demand that visual dynamic pressure produces groove becomes different shape with the groove shaped on the drive tab, as broken line shape or curvilinerar figure etc.In a preferable example, formed fluted shape is identical with the shape on each drive tab mating face, so promptly has a plurality of equally distributed dynamic pressures and produce grooves on the internal surface of the bearing after the combination.
As from the foregoing, because bearing of the present invention is to be combined by a plurality of drive tab, and when making each drive tab, can form required dynamic pressure simultaneously and produce groove thereon, therefore compare with the method that existing bearing and dynamic pressure generation groove form respectively, the manufacture method of Hydrodynamic bearing apparatus of the present invention is comparatively simple.In addition, be in open space, to form because dynamic pressure of the present invention produces groove, therefore can avoid the problem that processing is difficult in small space.
Clearly, person skilled in the art person is not in leaving spirit of the present invention and scope, when modification and the variation that can carry out various equivalences to the present invention.Therefore, all should be contained among the present invention with variation that the claim scope meaning of enclosing equates.
Claims (9)
1. combined type hydrodynamic bearing device comprises:
One bearing housing is formed with a containing space; And
The bearing of one hollow, combine by a plurality of drive tab, and the mutual driving fit in the mating face of wantonly two adjacent drive tab and its profile are complementary and shape this drive tab mating face is selected from broken line shape, curvilinerar figure or broken line shape and curved combination, this bearing places the containing space of this bearing housing, and its outer surface and this bearing housing fit tightly, this drive tab is maintained fixed, wherein, this drive tab is formed with a plurality of grooves, so that the internal surface of this bearing has and a plurality ofly produces groove in order to hold lubricated dynamic pressure with fluid.
2. combined type hydrodynamic bearing device as claimed in claim 1 is characterized in that this drive tab is the circular arc bulk, and the bearing that combines is cylindric, and this drive tab is to make up on the circumferential direction of this cylindric bearing; Wherein, the shape of all drive tab, size are all identical.
3. combined type hydrodynamic bearing device as claimed in claim 2 is characterized in that the shape of groove of all drive tab is consistent and identical with the shape on each drive tab mating face, and grooves evenly distribute and shape is identical so that all dynamic pressures on this bearing inner surface produce.
4. combined type hydrodynamic bearing device as claimed in claim 1 is characterized in that the shape of this groove is selected from the combination of broken line shape, curvilinerar figure and above-mentioned shape.
5. the manufacture method of a combined type hydrodynamic bearing device comprises following steps:
One bearing housing is provided, and this bearing housing is formed with a containing space;
Form a plurality of drive tab, the shape of this drive tab is designed to the proper bearing that becomes a hollow capable of being combined with size, make up the mutual driving fit in mating face and its profile complementation of former two adjacent drive tab, the shape on the mating face of this drive tab is selected from broken line shape, curvilinerar figure or broken line shape and curved combination, and when this bearing is inserted this containing space, its outer surface can fit tightly with this bearing housing, and this drive tab is formed with a plurality of grooves, so that the internal surface of this bearing has and a plurality ofly produces groove in order to hold lubricated dynamic pressure with fluid;
This drive tab is combined as this bearing; And
This bearing is inserted in the containing space of this bearing housing, by the outer surface of this bearing and this bearing housing fits tightly and this drive tab is maintained fixed.
6. the manufacture method of combined type hydrodynamic bearing device as claimed in claim 5 is characterized in that this drive tab is formed the circular arc bulk, so that the bearing that combines is cylindric, and this drive tab is to make up on the circumferential direction of this cylindric bearing; Wherein, the shape of all drive tab, size are all identical.
7. the manufacture method of combined type hydrodynamic bearing device as claimed in claim 6, the shape of groove that it is characterized in that all drive tab is consistent and identical with the shape on each drive tab mating face, and grooves evenly distribute and shape is identical so that all dynamic pressures on this bearing inner surface produce.
8. the manufacture method of combined type hydrodynamic bearing device as claimed in claim 5 is characterized in that the shape of this groove is selected from the combination of broken line shape, curvilinerar figure and above-mentioned shape.
9. the manufacture method of combined type hydrodynamic bearing device as claimed in claim 5 is characterized in that the manufacture method of this drive tab is selected from the mode of mold mode and ejection formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100699582A CN100383422C (en) | 2004-07-16 | 2004-07-16 | Combined type hydrodynamic bearing device and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100699582A CN100383422C (en) | 2004-07-16 | 2004-07-16 | Combined type hydrodynamic bearing device and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1721717A CN1721717A (en) | 2006-01-18 |
| CN100383422C true CN100383422C (en) | 2008-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100699582A Expired - Fee Related CN100383422C (en) | 2004-07-16 | 2004-07-16 | Combined type hydrodynamic bearing device and manufacturing method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN100383422C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954110A (en) * | 2011-08-30 | 2013-03-06 | 优磁科技股份有限公司 | Bearing assembly with high lubrication efficiency |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101571158B (en) * | 2008-05-04 | 2011-07-27 | 财团法人工业技术研究院 | Multilevel dynamic pressure groove and dynamic pressure bearing having same |
| KR101440256B1 (en) * | 2011-04-26 | 2014-09-12 | 센주긴조쿠고교 가부시키가이샤 | Sliding member |
| CN103322034B (en) * | 2012-03-23 | 2018-01-05 | 富瑞精密组件（昆山）有限公司 | Bearing and its manufacture method and the bearing arrangement using this kind of bearing |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86202079U (en) * | 1986-04-07 | 1987-03-04 | 皮玉俊 | Sliding contact bearing |
| CN1031588A (en) * | 1988-04-25 | 1989-03-08 | 何生荣 | A kind of radial sliding bearing |
| CN1034613A (en) * | 1988-01-27 | 1989-08-09 | 腓特烈港发动机及涡轮机联合股份公司 | The separated type sliding bearing |
| US5685647A (en) * | 1994-07-22 | 1997-11-11 | Seagate Technology, Inc. | Single plate hydrodynamic bearing with self-balancing fluid level and fluid circulation |
| CN2509371Y (en) * | 2001-01-02 | 2002-09-04 | 孙守连 | Multi-scarf plastic composite bush |
| WO2002070908A1 (en) * | 2001-02-24 | 2002-09-12 | Glacier Garlock Bearings, Inc. | Flanged bushes and methods for the manufacture thereof |
| CN2549251Y (en) * | 2002-05-10 | 2003-05-07 | 余世界 | Precisive shaped bimetal bush bearing lining sleeve with lubricant concaves |
| CN2586844Y (en) * | 2002-10-23 | 2003-11-19 | 杨和平 | Built-up shaft liner |
| CN1488043A (en) * | 2001-10-24 | 2004-04-07 | 索尼公司 | Bearing unit and motor provided therewith |
-
2004
- 2004-07-16 CN CNB2004100699582A patent/CN100383422C/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86202079U (en) * | 1986-04-07 | 1987-03-04 | 皮玉俊 | Sliding contact bearing |
| CN1034613A (en) * | 1988-01-27 | 1989-08-09 | 腓特烈港发动机及涡轮机联合股份公司 | The separated type sliding bearing |
| CN1031588A (en) * | 1988-04-25 | 1989-03-08 | 何生荣 | A kind of radial sliding bearing |
| US5685647A (en) * | 1994-07-22 | 1997-11-11 | Seagate Technology, Inc. | Single plate hydrodynamic bearing with self-balancing fluid level and fluid circulation |
| CN2509371Y (en) * | 2001-01-02 | 2002-09-04 | 孙守连 | Multi-scarf plastic composite bush |
| WO2002070908A1 (en) * | 2001-02-24 | 2002-09-12 | Glacier Garlock Bearings, Inc. | Flanged bushes and methods for the manufacture thereof |
| CN1488043A (en) * | 2001-10-24 | 2004-04-07 | 索尼公司 | Bearing unit and motor provided therewith |
| CN2549251Y (en) * | 2002-05-10 | 2003-05-07 | 余世界 | Precisive shaped bimetal bush bearing lining sleeve with lubricant concaves |
| CN2586844Y (en) * | 2002-10-23 | 2003-11-19 | 杨和平 | Built-up shaft liner |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102954110A (en) * | 2011-08-30 | 2013-03-06 | 优磁科技股份有限公司 | Bearing assembly with high lubrication efficiency |
| CN102954110B (en) * | 2011-08-30 | 2015-09-30 | 汶莱商新瓷科技股份有限公司 | The bearing unit of high lubrication usefulness |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1721717A (en) | 2006-01-18 |
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