CN112576540A - Fan bearing system - Google Patents
Fan bearing system Download PDFInfo
- Publication number
- CN112576540A CN112576540A CN202011592677.0A CN202011592677A CN112576540A CN 112576540 A CN112576540 A CN 112576540A CN 202011592677 A CN202011592677 A CN 202011592677A CN 112576540 A CN112576540 A CN 112576540A
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- CN
- China
- Prior art keywords
- bearing
- fan blade
- fan
- axis
- ring
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/063—Lubrication specially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a fan bearing system, which comprises a shaft sleeve, a bearing and a fan blade axis, wherein the bearing is axially installed on the inner side of the shaft sleeve in a stop manner, the fan blade axis is axially installed in the bearing in a stop manner and can rotate in the circumferential direction, and the fan blade axis is contacted with the bearing in at least one direction of the axial direction and the radial direction through an inclined plane.
Description
Technical Field
The present disclosure relates to heat dissipation fans, and particularly to a bearing system for a fan.
Background
Along with the development trend of light weight and high performance of electronic products, the requirements of users on a notebook computer are higher and higher, and the fan in the notebook computer is the same, a radiating fan inner bearing system mainly comprises a bearing and a fan blade axis, the current bearing inner hole and the end face are designed vertically, the fan blade axis adopts a cylindrical structure, the bearing avoids the abrasion of the edge and the fan blade axis, the edges of two ends of the bearing inner hole are designed with chamfers, the fan blade axis and the bearing inner hole are only contacted by a cylindrical surface between the chamfers, the contact area of the fan blade axis and a bearing oil film is smaller, the noise is higher, the service life is shorter, and the requirement of the high energy efficiency of the fan.
Disclosure of Invention
In order to overcome the defects, the invention provides a fan bearing system which can effectively reduce the noise of a fan and prolong the service life of the fan bearing system.
The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides a fan bearing system, includes axle sleeve, bearing and flabellum axle center, the installation of bearing axial locking is inboard in the axle sleeve, and flabellum axle center axial locking and circumferencial direction can be rotated install in the bearing, the flabellum axle center passes through the inclined plane contact with the bearing in axial and radial at least one direction.
As a further improvement of the invention, the end of the axis of the fan blade close to the fan blade is an upper end, the end of the axis of the fan blade far away from the fan blade is a lower end, the axis of the fan blade is a truncated cone-shaped cylindrical body with the upper outer diameter smaller than the lower outer diameter, a cone-shaped hole with the upper inner diameter smaller than the lower inner diameter is formed inside the bearing, and the axis of the fan blade can rotate around the axis of the cone-shaped hole and is inserted into the cone-shaped.
As a further improvement of the invention, the lower end of the axle center of the fan blade is flatly attached to the inner bottom surface of the shaft sleeve.
As a further improvement of the invention, the axis of the fan blade is an inverted truncated cone-shaped cylindrical body with the outer diameter of the upper end larger than the outer diameter of the lower end, an inverted cone-shaped hole with the inner diameter of the upper end larger than the inner diameter of the lower end is formed inside the bearing, the axis of the fan blade can rotate around the axis of the fan blade and is inserted into the inverted cone-shaped hole of the bearing, the lower end of the axis of the fan blade is also fixedly provided with a circle of radially outward expanded stop ring, and the lower end face of the bearing is stopped.
As a further improvement of the invention, the upper end of the fan blade shaft center forms a cylindrical structure, the lower end of the fan blade shaft center forms a conical structure with the diameter of the upper end smaller than that of the lower end, the upper end of the inner side of the bearing forms a cylindrical hole, and the lower end of the inner side of the bearing forms a truncated conical hole with the inner diameter of the upper end smaller than that of the lower end.
As a further improvement of the invention, a circle of radially outward-expanded stop ring is fixedly arranged at the lower end of the axis of the fan blade, the lower end face of the bearing is stopped at the upper side of the stop ring, and a conical structure at the lower end of the axis of the fan blade is a conical chamfer face between the stop ring and the outer side face of the circumference of the axis of the fan blade.
As a further improvement of the present invention, the tapered chamfer surface is a straight chamfer surface or a circular arc chamfer surface.
As a further improvement of the invention, the upper end edge of the inner side of the bearing is formed with a chamfer structure.
As a further improvement of the invention, the lower end of the stop ring is flatly attached to the inner bottom surface of the shaft sleeve, and a set gap exists between the circumferential outer side surface of the stop ring and the inner side surface of the shaft sleeve.
As a further improvement of the invention, the upper end of the inner side of the shaft sleeve is fixedly provided with a limiting snap ring, the limiting snap ring tightly abuts against the end surface of the upper end of the bearing, the bottom surface of the inner side of the bearing is also provided with a friction ring, and the axis of the fan blade is contacted with the friction ring.
The invention has the beneficial effects that: the fan bearing structure has the advantages that the conical structures are designed on the inner hole and the axial outer side face of the bearing of the fan, so that the bearing is in contact with the axis of the fan blade through the conical surfaces, the effective contact area of the axis of the fan blade and a bearing oil film is greatly increased under the condition of the same framework height, the noise generated by a fan bearing system is obviously reduced, axial and radial bidirectional forces are formed between the bearing and the axis of the fan blade, the unidirectional force is reduced, and the service life of the fan bearing system is prolonged.
Drawings
FIG. 1 is a schematic diagram of a first structural principle of the present invention;
FIG. 2 is a schematic diagram of a second structural principle of the present invention;
fig. 3 is a schematic diagram of a third structural principle of the present invention.
Detailed Description
Example (b): the utility model provides a fan bearing system, includes axle sleeve 1, bearing 2 and flabellum axle center 3, 2 axial arresting of bearing install in axle sleeve 1 inboard, 3 axial arresting in flabellum axle center and circumferencial direction can the pivoted install in bearing 2 its characterized in that: the fan blade axis 3 is in contact with the bearing 2 through an inclined plane in at least one of the axial direction and the radial direction.
The bearing 2 is contacted with the fan blade axis 3 through a conical surface, under the condition of the same framework height, the effective contact area of the fan blade axis 3 and an oil film of the bearing 2 is greatly increased, the noise generated by the fan bearing 2 system is obviously reduced, the contact force between the fan blade axis 3 and the bearing 2 is decomposed into axial force and radial force through inclined surface contact, the one-way stress of the bearing 2 is reduced, and the service life of the fan bearing 2 system is prolonged.
The structure is characterized in that one end, close to the fan blade, of the fan blade axis 3 is an upper end, the end, far away from the fan blade, of the fan blade axis 3 is a lower end, the fan blade axis 3 is a truncated conical cylindrical body, the outer diameter of the upper end of the truncated conical cylindrical body is smaller than the outer diameter of the lower end of the truncated conical cylindrical body, a conical hole 4, the inner diameter of the upper end of the conical hole is smaller than the inner diameter of the lower end of the conical hole, and the fan. According to the structure, the outer surface of the circumference of the fan blade axis 3 and the inner side of the bearing 2 are in contact with each other through the conical surface, so that the effective oil film contact area is increased, the axial displacement of the fan blade axis 3 is limited through the conical surface, the axial limitation of the mandrel is realized without arranging a snap ring structure on the outer side wall of the mandrel, the overall height of the bearing 2 system can be effectively reduced, the height of the bearing 2 and the length of the fan blade axis 3 are effectively increased under the condition that the height of the fan framework is kept unchanged, the effective contact area of the fan blade axis 3 and the oil film of the bearing 2 is further increased, the bearing 2 is in complete contact with the axis through the conical surface, the automatic centering effect is realized on the fan blade axis 3.
The lower end of the fan blade axis 3 is flatly attached to the bottom surface of the inner side of the shaft sleeve 1.
The upper end of the fan blade axis 3 forms a cylindrical structure, the lower end of the fan blade axis 3 forms a conical structure with the upper end diameter smaller than the lower end diameter, the upper end of the inner side of the bearing 2 forms a cylindrical hole, and the lower end of the inner side of the bearing 2 forms a truncated conical hole 4 with the upper end inner diameter smaller than the lower end inner diameter. The inner hole and the axle center of the bearing 2 form a two-section structure, the contact is carried out through the conical surface at the lower end, the effective oil film contact area of the axle center 3 of the fan blade and the bearing 2 is increased, and the axial limit of the axle center is realized through the conical surface.
The lower end of the fan blade axis 3 is fixedly provided with a circle of stop ring 6 which expands radially outwards, the lower end face of the bearing 2 is stopped at the upper side of the stop ring 6, and the conical structure at the lower end of the fan blade axis 3 is a conical chamfer face 7 between the stop ring 6 and the outer side face of the circumference of the fan blade axis 3. The lower end of the axis of the fan blade is provided with the stop ring 6, the axial stable limit of the axis of the fan blade 3 is realized by stopping the lower end face of the bearing 2 through the stop ring 6, the integral strength of the axis of the fan blade 3 is improved through the transition of the chamfer surface formed between the stop ring 6 and the outer circumferential surface of the axis of the fan blade 3, the contact area of an oil film between the bearing and the fan blade 3 is increased, and the structure is convenient to process and assemble.
The tapered chamfer surface 7 is a straight chamfer surface or an arc chamfer surface.
The edge of the upper end of the inner side of the bearing 2 is provided with a chamfer structure.
The lower end of the stop ring 6 is flatly attached to the inner side bottom surface of the shaft sleeve 1, and a set gap exists between the circumferential outer side surface of the stop ring 6 and the inner side surface of the shaft sleeve 1. The stop ring 6 is prevented from rubbing the inner side wall of the shaft sleeve 1 when rotating along with the fan blade axis 3, and the high-speed rotation of the fan blade axis 3 is facilitated.
The inner side upper end of the shaft sleeve 1 is fixedly provided with a limiting snap ring 8, the limiting snap ring 8 tightly supports the end face of the upper end of the bearing 2, the inner side bottom surface of the bearing 2 is further provided with a friction ring, and the fan blade axis 3 is in contact with the friction ring. Realize bearing 2 axial positioning in axle sleeve 1 through spacing snap ring 8, through having antifriction, the friction ring that coefficient of surface friction is low contacts with 3 lower extremes in flabellum axle center, avoids axle sleeve 1 bottom surface wearing and tearing, is favorable to the flabellum dabber high-speed rotatory.
Claims (10)
1. The utility model provides a fan bearing system, includes axle sleeve (1), bearing (2) and flabellum axle center (3), the installation in the axle sleeve inboard of bearing axial locking, flabellum axle center axial locking and circumferencial direction can be pivoted install in the bearing its characterized in that: the axial center of the fan blade is in contact with the bearing through an inclined plane in at least one direction of the axial direction and the radial direction.
2. The fan bearing system of claim 1, wherein: the structure is characterized in that one end, close to the fan blade, of the fan blade axis is an upper end, one end, far away from the fan blade, of the fan blade axis is a lower end, the fan blade axis is a truncated conical cylindrical body, the outer diameter of the upper end of the truncated conical cylindrical body is smaller than the outer diameter of the lower end of the truncated conical cylindrical body, a conical hole (4) is formed in the inner side of the bearing, the inner diameter of the upper end of the conical hole is smaller.
3. The fan bearing system of claim 2, wherein: the lower end of the axle center of the fan blade is flatly attached to the bottom surface of the inner side of the shaft sleeve.
4. The fan bearing system of claim 1, wherein: the fan blade axle center is the truncated cone cylindricality body that the upper end external diameter is greater than the lower extreme external diameter, and the bearing inboard forms the back taper hole (5) that the upper end internal diameter is greater than the lower extreme internal diameter, the fan blade axle center can be around its axis pivoted insert locate the back taper downthehole of bearing, fan blade axle center lower extreme still fixedly is equipped with the radial outer backstop ring (6) that expands of round, the terminal surface stop in under the bearing backstop ring upside.
5. The fan bearing system of claim 1, wherein: the upper end of the fan blade shaft center forms a cylindrical structure, the lower end of the fan blade shaft center forms a conical structure of which the diameter of the upper end is smaller than that of the lower end, the upper end of the inner side of the bearing forms a cylindrical hole, and the lower end of the inner side of the bearing forms a truncated conical hole of which the inner diameter of the upper end is smaller than that of the lower end.
6. The fan bearing system of claim 5, wherein: the fan blade shaft center lower extreme is fixed with the radial outer expanding's of round backstop ring, the terminal surface backstop in the backstop ring upside under the bearing, toper structure backstop ring and fan blade shaft center circumference lateral surface between the toper chamfer face (7) of fan blade shaft center lower extreme.
7. The fan bearing system of claim 6, wherein: the conical chamfer surface is a straight chamfer surface or an arc chamfer surface.
8. The fan bearing system of claim 5, wherein: and a chamfer structure is formed at the edge of the upper end of the inner side of the bearing.
9. The fan bearing system of claim 4 or 6, wherein: the lower end of the stop ring is flatly attached to the bottom surface of the inner side of the shaft sleeve, and a set gap exists between the surface of the outer side of the circumference of the stop ring and the surface of the inner side of the shaft sleeve.
10. The fan bearing system of claim 1, wherein: the inner side upper end of the shaft sleeve is fixedly provided with a limiting snap ring (8), the limiting snap ring tightly abuts against the end face of the upper end of the bearing, the bottom surface of the inner side of the bearing is further provided with a friction ring, and the axis of the fan blade is in contact with the friction ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011592677.0A CN112576540A (en) | 2020-12-29 | 2020-12-29 | Fan bearing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011592677.0A CN112576540A (en) | 2020-12-29 | 2020-12-29 | Fan bearing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112576540A true CN112576540A (en) | 2021-03-30 |
Family
ID=75144055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011592677.0A Pending CN112576540A (en) | 2020-12-29 | 2020-12-29 | Fan bearing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112576540A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982987A (en) * | 2021-11-29 | 2022-01-28 | 珠海格力电器股份有限公司 | Bearing assembly, air supply device and air conditioner |
-
2020
- 2020-12-29 CN CN202011592677.0A patent/CN112576540A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113982987A (en) * | 2021-11-29 | 2022-01-28 | 珠海格力电器股份有限公司 | Bearing assembly, air supply device and air conditioner |
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