CN207945197U - Fluid dynamic pressure shaft bearing structure - Google Patents
Fluid dynamic pressure shaft bearing structure Download PDFInfo
- Publication number
- CN207945197U CN207945197U CN201820253954.7U CN201820253954U CN207945197U CN 207945197 U CN207945197 U CN 207945197U CN 201820253954 U CN201820253954 U CN 201820253954U CN 207945197 U CN207945197 U CN 207945197U
- Authority
- CN
- China
- Prior art keywords
- oil guide
- guide groove
- dynamic pressure
- fluid dynamic
- bearing structure
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 23
- 230000000694 effects Effects 0.000 description 5
- 238000005457 optimization Methods 0.000 description 4
- 230000001050 lubricating effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
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- Sliding-Contact Bearings (AREA)
Abstract
A kind of fluid dynamic pressure shaft bearing structure, including a bearing body and multiple first Oil Guide grooves.There is a shaft hole, shaft hole to be through to the both ends of bearing body at the center of bearing body.Those the first Oil Guide grooves are set to the interior sidewall surface of shaft hole, those the first Oil Guide grooves are V-shaped, and the section of those the first Oil Guide grooves is trapezoidal.Oil Guide groove is easily worked as a result, so that product yield is promoted.
Description
Technical field
The utility model is related to a kind of fluid dynamic pressure shaft bearing structures, particularly relate to one kind and passing through bearing and shaft via fluid
Between, due to flowing velocity change and generate pressure field so that shaft can stable rotation and not with the bearing knot of bearing touch
Structure.
Background technology
General hydrodynamic pressure bearing lies in the inner surface of bearing body or the outer surface setting Oil Guide groove of shaft, works as profit
Slip-stream body can be concentrically formed pressure when being flowed between shaft and bearing body, pass through the bracing force of oil film so that shaft is revolved
Shaft hole will not be contacted when turning, therefore can avoid shaft and mutually collide and wear with bearing body, and then reduces noise and vibrations
It generates, becomes the common bearing technology of information products institute now.The inner surface of existing hydrodynamic pressure bearing is provided with multiple Oil Guides
The section of groove, those Oil Guide grooves is arc-shaped, it is not easy to be processed so that the product yield of hydrodynamic pressure bearing reduces.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of fluid dynamic pressure shaft bearing structure, Oil Guide groove appearance
Easy processing so that product yield is promoted.
In order to solve the above technical problems, the utility model provides a kind of fluid dynamic pressure shaft bearing structure, including：One bearing
There is a shaft hole, the shaft hole to be through to the both ends of the bearing body at the center of ontology, the bearing body；And multiple first
Oil Guide groove, those the first Oil Guide grooves are set to the interior sidewall surface of the shaft hole, those the first Oil Guide grooves are V-shaped, those
The section of first Oil Guide groove is trapezoidal.
Preferably, the ditch depth of every 1 first Oil Guide groove is 0.003mm to 0.008mm, the ditch of every 1 first Oil Guide groove
Width is 0.065mm to 0.135mm.
Preferably, the ditch angle of every 1 first Oil Guide groove is 31.5 ° to 36.5 °.
Preferably, the width of every 1 first Oil Guide groove is 3.26mm to 3.46mm.
Preferably, the tip depth of every 1 first Oil Guide groove is 1.8mm to 2mm.
Preferably, further include multiple second Oil Guide grooves, those the second Oil Guide grooves are set to the madial wall of the shaft hole
Face, those the second Oil Guide grooves form interval setting with those the first Oil Guide grooves, those the second Oil Guide grooves are V-shaped, those
The section of second Oil Guide groove is trapezoidal.
Preferably, the ditch depth of every 1 second Oil Guide groove is 0.003mm to 0.008mm, the ditch of every 1 second Oil Guide groove
Width is 0.065mm to 0.135mm.
Preferably, the ditch angle of every 1 second Oil Guide groove is 31.5 ° to 36.5 °.
Preferably, the width of every 1 second Oil Guide groove is 2.35mm to 2.55mm.
Preferably, the tip depth of every 1 second Oil Guide groove is 1.3mm to 1.5mm.
The beneficial effects of the utility model：
The utility model hydrodynamic pressure bearing structure setting has Oil Guide groove (such as the first Oil Guide groove), can be used to guide profit
Slip-stream body makes lubricating fluid be flowed between shaft and bearing body, and is concentrically formed pressure, by the bracing force of oil film,
So that shaft will not contact shaft hole when rotating, therefore can avoid shaft and mutually collide and wear with bearing body, and then reduce
Noise is generated with vibrations.The section of those Oil Guide grooves of the utility model is trapezoidal, is easily worked so that hydrodynamic pressure bearing
Product yield promoted.
Further, the ditch depth of the first, second Oil Guide of the utility model groove is 0.003mm to 0.008mm, first, the
The furrow width of two Oil Guide grooves is 0.065mm to 0.135mm, and the ditch angle of the first, second Oil Guide groove is 31.5 ° to 36.5 °, can
An optimization design is formed, there is preferable Oil Guide effect.
For the enabled feature and technology contents for being further understood that the utility model, please refer to below in connection with the utility model
Detailed description and accompanying drawings, however, the drawings only provide reference and explanation, not be used for the utility model person of limiting.
Description of the drawings
Fig. 1 is the sectional view of the utility model fluid dynamic pressure shaft bearing structure.
Fig. 2 is the plan view of the utility model the first Oil Guide groove.
Fig. 3 is III partial detail view of Fig. 1.
Fig. 4 is the plan view of the utility model the second Oil Guide groove.
Fig. 5 is V partial detail view of Fig. 1.
Specific implementation mode
Referring to Fig. 1, the utility model provides a kind of fluid dynamic pressure shaft bearing structure, including a bearing body 1 and multiple the
One Oil Guide groove 2, the fluid dynamic pressure shaft bearing structure may also include multiple second Oil Guide grooves 3.
The bearing body 1 is a hollow cylinder, and the outer side surface of bearing body 1 can be in waney variation.Bearing sheet
It is a circular hole that the center of body 1, which has a shaft hole 11, shaft hole 11, and shaft hole 11 is through to the both ends of bearing body 1, so as to
Shaft coordinates.
Please refer to Fig.1, Fig. 2 and Fig. 3, those the first Oil Guide grooves 2 are set to the interior sidewall surface of shaft hole 11, those first
Oil Guide groove 2 is V-shaped, that is, is in chevron shaped, the first Oil Guide groove 2 is equally spaced is arranged for those, those the first Oil Guide grooves 2
Section it is trapezoidal (as shown in Figure 3), i.e. the section of the first Oil Guide groove 2 is wider at shaft hole 11, far from shaft hole 11
Locate relatively narrow.
In the present embodiment, the ditch depth A1 of every 1 first Oil Guide groove 2 is 0.003mm to 0.008mm, every 1 first Oil Guide
The furrow width B1 of groove 2 is 0.065mm to 0.135mm, and the ditch angle C1 of every 1 first Oil Guide groove 2 is 31.5 ° to 36.5 °, institute
The ditch angle C1 for stating the first Oil Guide groove 2 refers to the angle of the first Oil Guide groove 2.
Further, the width D 1 of every 1 first Oil Guide groove 2 is 3.26mm to 3.46mm, the width of the first Oil Guide groove 2
It refers to width dimensions of the first Oil Guide groove 2 in 1 axial direction of bearing body to spend D1.The tip depth of every 1 first Oil Guide groove 2
E1 is 1.8mm to 2mm, and the tip depth E1 of the first Oil Guide groove 2 refers to one first tip 21 of the first Oil Guide groove 2 in bearing
Depth dimensions in 1 axial direction of ontology.
Please refer to Fig.1, Fig. 4 and Fig. 5, those the second Oil Guide grooves 3 are set to the interior sidewall surface of shaft hole 11, those second
Oil Guide groove 3 and those the first Oil Guide grooves 2 form interval setting, as shown in Figure 1, those the first Oil Guide grooves 2 and those the
Two Oil Guide grooves 3 are respectively arranged at the top and lower part of the interior sidewall surface of shaft hole 11.Those the second Oil Guide grooves 3 are V-shaped, i.e.,
In chevron shaped, the second Oil Guide groove 3 is equally spaced is arranged for those, and the section of those the second Oil Guide grooves 3 is trapezoidal (as schemed
Shown in 5), i.e. the section of the second Oil Guide groove 3 is wider at shaft hole 11, far from relatively narrow at shaft hole 11.
In the present embodiment, the ditch depth A2 of every 1 second Oil Guide groove 3 is 0.003mm to 0.008mm, every 1 second Oil Guide
The furrow width B2 of groove 3 is 0.065mm to 0.135mm, and the ditch angle C2 of every 1 second Oil Guide groove 3 is 31.5 ° to 36.5 °, institute
The ditch angle C2 for stating the second Oil Guide groove 3 refers to the angle of the second Oil Guide groove 3.
Further, the width D 2 of every 1 second Oil Guide groove 3 is 2.35mm to 2.55mm, the width of the second Oil Guide groove 3
It refers to width dimensions of the second Oil Guide groove 3 in 1 axial direction of bearing body to spend D2.The tip depth of every 1 second Oil Guide groove 3
E2 is 1.3mm to 1.5mm, and the tip depth E2 of the second Oil Guide groove 3 refers to one second tip 31 of the second Oil Guide groove 3 in axis
Hold the depth dimensions in 1 axial direction of ontology.The size of the first Oil Guide groove 2 and the second Oil Guide groove 3 is that an optimization is set
Meter can have preferable Oil Guide effect, so that lubricating fluid is flowed between shaft and bearing body 1 really, preferably be subtracted with having
The effect that few noise is generated with vibrations.But the size of those the first Oil Guide grooves 2 and those the second Oil Guide grooves 3 and unlimited
System may also respond with needs and be changed.
The utility model hydrodynamic pressure bearing structure setting has Oil Guide groove (the first Oil Guide groove, the second Oil Guide groove),
Direct lubricant flow is can be used to, lubricating fluid is made to be flowed between shaft and bearing body, and is concentrically formed pressure, passes through oil film
Bracing force so that shaft will not contact shaft hole when rotating, therefore can avoid shaft and mutually collide and grind with bearing body
Damage, and then reduce noise and generated with vibrations.The section of those Oil Guide grooves of the utility model is trapezoidal, is easily worked so that
The product yield of hydrodynamic pressure bearing is promoted.
The ditch depth of the utility model the first, second Oil Guide groove is 0.003mm to 0.008mm, the first, second Oil Guide groove
Furrow width be 0.065mm to 0.135mm, the ditch angle of the first, second Oil Guide groove is 31.5 ° to 36.5 °, can form an optimization
Design has preferable Oil Guide effect.
The width of the utility model the first Oil Guide groove is 3.26mm to 3.46mm, and the tip depth of the first Oil Guide groove is
The width of 1.8mm to 2mm, the second Oil Guide groove are 2.35mm, until 2.55mm, the tip depth of the second Oil Guide groove is 1.3mm
To 1.5mm, an optimization design can be also formed, there is more preferably Oil Guide effect.
But the above is only the preferred embodiment of the present invention, is not intended to the patent protection of limitation the utility model
Range, therefore the equivalence changes carried out by the utility model specification and accompanying drawing content are used such as, similarly all it is contained in this practicality
In novel rights protection scope, Chen Ming is given in conjunction.
Claims (10)
1. a kind of fluid dynamic pressure shaft bearing structure, which is characterized in that including：
There is a shaft hole, the shaft hole to run through the two of the bearing body at the center of one bearing body, the bearing body
End；And
Multiple first Oil Guide grooves, multiple first Oil Guide grooves are set to the interior sidewall surface of the shaft hole, multiple described
First Oil Guide groove is V-shaped, and the section of multiple first Oil Guide grooves is trapezoidal.
2. fluid dynamic pressure shaft bearing structure according to claim 1, which is characterized in that the ditch of each first Oil Guide groove
Depth is 0.003mm to 0.008mm, and the furrow width of each first Oil Guide groove is 0.065mm to 0.135mm.
3. fluid dynamic pressure shaft bearing structure according to claim 1, which is characterized in that the ditch of each first Oil Guide groove
Angle is 31.5 ° to 36.5 °.
4. fluid dynamic pressure shaft bearing structure according to claim 1, which is characterized in that the width of each first Oil Guide groove
Degree is 3.26mm to 3.46mm.
5. fluid dynamic pressure shaft bearing structure according to claim 1, which is characterized in that the point of each first Oil Guide groove
End depth is 1.8mm to 2mm.
6. fluid dynamic pressure shaft bearing structure according to claim 1, which is characterized in that further include multiple second Oil Guide grooves,
Multiple second Oil Guide grooves are set to the interior sidewall surface of the shaft hole, multiple second Oil Guide grooves with it is multiple described
First Oil Guide groove forms interval setting, and multiple second Oil Guide grooves are V-shaped, the section of multiple second Oil Guide grooves
It is trapezoidal.
7. fluid dynamic pressure shaft bearing structure according to claim 6, which is characterized in that the ditch of each second Oil Guide groove
Depth is 0.003mm to 0.008mm, and the furrow width of each second Oil Guide groove is 0.065mm to 0.135mm.
8. fluid dynamic pressure shaft bearing structure according to claim 6, which is characterized in that the ditch of each second Oil Guide groove
Angle is 31.5 ° to 36.5 °.
9. fluid dynamic pressure shaft bearing structure according to claim 6, which is characterized in that the width of each second Oil Guide groove
Degree is 2.35mm to 2.55mm.
10. fluid dynamic pressure shaft bearing structure according to claim 6, which is characterized in that each second Oil Guide groove
Tip depth is 1.3mm to 1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820253954.7U CN207945197U (en) | 2018-02-12 | 2018-02-12 | Fluid dynamic pressure shaft bearing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820253954.7U CN207945197U (en) | 2018-02-12 | 2018-02-12 | Fluid dynamic pressure shaft bearing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207945197U true CN207945197U (en) | 2018-10-09 |
Family
ID=63699844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820253954.7U Expired - Fee Related CN207945197U (en) | 2018-02-12 | 2018-02-12 | Fluid dynamic pressure shaft bearing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207945197U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981033A (en) * | 2019-05-23 | 2020-11-24 | 东培工业股份有限公司 | Non-directional dynamic pressure bearing structure |
-
2018
- 2018-02-12 CN CN201820253954.7U patent/CN207945197U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981033A (en) * | 2019-05-23 | 2020-11-24 | 东培工业股份有限公司 | Non-directional dynamic pressure bearing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181009 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |