CN209925261U - Dynamic pressure structure of fan with plastic frame and oil-containing metal powder bearing integrally formed - Google Patents
Dynamic pressure structure of fan with plastic frame and oil-containing metal powder bearing integrally formed Download PDFInfo
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- CN209925261U CN209925261U CN201920704181.4U CN201920704181U CN209925261U CN 209925261 U CN209925261 U CN 209925261U CN 201920704181 U CN201920704181 U CN 201920704181U CN 209925261 U CN209925261 U CN 209925261U
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- oil
- metal powder
- dynamic pressure
- powder bearing
- containing metal
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Abstract
A dynamic pressure structure of a fan with a plastic frame body and an oil-containing metal powder bearing integrally formed comprises: oil-impregnated metal powder bearings; the middle pipe is integrally and fixedly wrapped on the periphery of the ring body of the oil-containing metal powder bearing; the shaft core of the fan blade component penetrates through the shaft hole of the oil-containing metal powder bearing, protrudes downwards and is provided with an annular groove; and the annular movable pressing sheet is provided with an embedding hole and a sheet body positioned on the periphery of the embedding hole, the embedding hole is embedded and fixed in the annular groove of the shaft core, and the sheet body is provided with a plurality of arc-shaped radial movable pressing grooves on one surface facing the oil-containing metal powder bearing. When the fan blade assembly rotates, the dynamic pressure groove of the annular dynamic pressure sheet can form an oil film, and the oil film and the end surface of the oil-containing metal powder bearing can stably move with acting force and reacting force, so that friction, noise and vibration are avoided, and the fan blade assembly is prevented from being out of a frame.
Description
Technical Field
The present invention relates to a fan, and more particularly, to a dynamic pressure structure of a fan.
Background
The fan is usually provided with a motor structure such as silicon steel sheet and magnet on a frame, and a bearing is provided at the center of the frame for the axial core of the fan blade to support and pivot thereon, so that the fan blade can rotate smoothly.
The bearing is widely used because of its wide variety, and among them, the oil-containing metal powder bearing is easy to manufacture and low in cost.
The conventional combination structure of the oil-retaining metal powder bearing and the plastic frame is to provide the oil-retaining metal powder bearing and the plastic frame, respectively, and then press-fit the oil-retaining metal powder bearing into the middle tube of the plastic frame.
However, such a combination structure has the following disadvantages: the press-fit combination time and labor are increased; the pressing force of press fit is easy to cause the damage of the oil-containing metal powder bearing, and the reject ratio is high; when in press fit, the tube in the frame body and the oil-containing metal powder bearing are easy to deform in appearance structure; the forced extrusion force of the press fit also can deform the inner wall of the shaft hole of the oil-containing metal powder bearing; no matter the deformation of the external structure or the internal shaft hole, the oil-containing metal powder bearing can cause structural friction with the shaft core of the fan blade when the fan blade rotates, thereby causing oil leakage, oil throwing and the like, and further causing the phenomenon of shaft core locking.
In addition, after the shaft core of the fan blade is inserted into the oil-containing metal powder bearing in a pivot mode, a gasket is embedded into the protruding end portion of the bearing to prevent the fan blade from being out of the frame. However, the conventional gasket is a C-shaped gasket with a smooth surface, which has a poor oil storage effect, and when the fan blade rotates at a very high speed to form an upward lifting force, the gasket is easily lifted upward integrally to generate friction with the end surface of the oil-containing metal powder bearing, thereby causing noise, vibration, even fan blade frame drop, and the like.
Novel content
The utility model provides a plastic frame body and oily metal powder bearing integrated into one piece's dynamic pressure structure of fan with good result of use.
According to this novel aspect, a dynamic pressure structure of plastics framework and oily metal powder bearing integrated into one piece's fan is provided, include: an oil-impregnated metal powder bearing having a ring body with a shaft hole at the center thereof; the plastic frame body is provided with a middle pipe and a chassis which are connected, and the middle pipe is integrally and fixedly wrapped on the periphery of the ring body of the oil-containing metal powder bearing; the fan blade assembly is provided with a plurality of fan blades and a shaft core, the shaft core is positioned in the center of the fan blade assembly, penetrates through a shaft hole of the oil-containing metal powder bearing and protrudes downwards, and the protruding shaft core is provided with an annular groove; and the annular movable pressing sheet is provided with an embedding hole and a sheet body positioned on the periphery of the embedding hole, the embedding hole is embedded and fixed in the annular groove of the shaft core, and the sheet body is provided with a plurality of arc-shaped radial movable pressing grooves on one surface facing the oil-containing metal powder bearing.
According to the embodiment of the present invention, the annular dynamic pressure plate also has a plurality of arc-shaped radial dynamic pressure grooves on the surface facing away from the oil-containing metal powder bearing.
According to an embodiment of the present invention, the end of the shaft core is a tapered body end portion having a gradually decreasing outer diameter.
According to the novel embodiment, one surface of the end part of the conical body is provided with a tangent plane, and the inner wall of the embedding hole of the annular movable pressing sheet is provided with a tangent wall matched with the tangent plane.
According to the dynamic pressure structure of the fan with the plastic frame body and the oil-containing metal powder bearing integrally formed, the plastic frame body and the oil-containing metal powder bearing are integrally formed during assembly, so that the damage and deformation of the oil-containing metal powder bearing caused by conventional press-fit assembly can be avoided; in addition, when the fan blade assembly rotates, the annular dynamic pressure sheet forms an oil film with the end surface of the oil-containing metal powder bearing through the dynamic pressure groove of the annular dynamic pressure sheet, and the annular dynamic pressure sheet stably moves with the end surface of the oil-containing metal powder bearing under acting force and reacting force, so that friction with the end surface of the oil-containing metal powder bearing is avoided, noise and vibration are avoided, and the fan blade assembly is prevented from being unframed.
Drawings
Fig. 1 is a schematic cross-sectional view illustrating a dynamic pressure structure of a fan in which a plastic frame and an oil-containing metal powder bearing are integrally formed according to the present invention.
Fig. 2 is an enlarged view illustrating a portion a of the dynamic pressure structure shown in fig. 1.
Fig. 3 is an exploded view showing the main portion of the dynamic pressure structure shown in fig. 1.
FIG. 4 is an enlarged view showing the dynamic pressure structure of FIG. 3 in which the axial core and the annular dynamic pressure plate are formed.
100: oil-containing metal powder bearing
110: ring body
120: shaft hole
200: plastic frame
210: middle pipe
220: chassis
230: silicon steel sheet
300: fan blade assembly
310: fan blade
320: shaft core
321: annular groove
322: end of conical body
323: cut noodles
330: magnet
400: annular movable pressing sheet
410: embedding hole
411: wall cutting
420: sheet body
421: dynamic pressure ditch
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings.
Referring to fig. 1 to 4, the dynamic pressure structure of the fan integrally formed by the plastic frame and the oil-containing metal powder bearing according to the present invention includes an oil-containing metal powder bearing 100, a plastic frame 200, a fan blade assembly 300 and an annular dynamic pressure plate 400.
The oiled metal powder bearing 100 has a ring body 110 having a shaft hole 120 at the center thereof. The plastic frame 200 has a middle tube 210 and a bottom plate 220 connected thereto. The middle tube 210 is integrally and fixedly wrapped around the outer circumference of the ring body 110 of the oil-impregnated metal powder bearing 100.
The fan blade assembly 300 has a plurality of fan blades 310 and a shaft core 320. The shaft core 320 is located at the center of the fan blade assembly 300, and the shaft core 320 is received in the shaft hole 120 of the oiled metal powder bearing 100 and protrudes downward, and the protruding shaft core has an annular groove 321. The protruding end of the shaft core 320 is a tapered body end 322 with a gradually decreasing outer diameter to smoothly guide the annular movable pressing piece 400 to be fitted into the annular groove 321 of the shaft core 320. One face of the end 322 of the cone has a cut 323. Silicon steel sheets 230 and magnets 330 are respectively disposed between the middle tube 210 of the plastic frame 200 and the fan blade assembly 300, so that the fan blade assembly 300 generates power to drive the shaft core 320 to rotate in the shaft hole 120 of the oil-containing metal powder bearing 100.
The annular moving pressing plate 400 has a fitting hole 410 and a plate body 420 located at the periphery of the fitting hole. The inner wall of the insertion hole 410 has a cut wall 411 matching the cut 323 of the shaft core 320. The cut wall 411 of the insertion hole 410 is aligned with the cut surface 323 of the shaft core 320, and the annular moving pressing piece 400 is smoothly inserted and fixed in the annular groove 321 of the shaft core 320 by the insertion hole 410 by the guide of the tapered end 322 of the shaft core 320. After the insertion hole 410 is inserted into the annular groove 321, the annular moving pressing piece 400 is slightly turned to make the cutting wall 411 of the annular moving pressing piece 400 dislocated with the cutting surface 323 of the shaft core 320, so that the annular moving pressing piece 400 is firmly inserted into the annular groove 321 of the shaft core 320 and is not easy to fall off. The annular dynamic pressure plate 400 is disposed on one surface facing the oil-containing metal powder bearing 100 and the opposite surface thereof, and has a plurality of dynamic pressure grooves 421 with arc-shaped radial shape, respectively, which have the function of storing oil to form an oil film.
According to the dynamic pressure structure of the fan with the plastic frame body and the oil-containing metal powder bearing integrally formed, the plastic frame body 200 and the oil-containing metal powder bearing 100 are integrally formed during assembly, so that damage and deformation of the oil-containing metal powder bearing 100 caused by conventional press-fit assembly can be avoided; in addition, when the fan blade assembly 300 rotates, the annular dynamic pressure plate 400 forms an oil film with the end surface of the oil-containing metal powder bearing 100 by the dynamic pressure groove 421, and stably performs the movement of the acting force and the reacting force with the end surface of the oil-containing metal powder bearing 100, thereby preventing the friction with the end surface of the oil-containing metal powder bearing 100, further preventing the noise and the vibration from being generated, and preventing the fan blade assembly from being out of the frame.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.
Claims (4)
1. The utility model provides a dynamic pressure structure of plastic frame and oily metal powder bearing integrated into one piece's fan which characterized in that includes:
an oil-impregnated metal powder bearing having a ring body having a shaft hole at the center thereof;
the plastic frame body is provided with a middle pipe and a chassis which are connected, and the middle pipe is integrally and fixedly wrapped on the periphery of the ring body;
the fan blade assembly is provided with a plurality of fan blades and a shaft core, the shaft core is positioned in the center of the fan blade assembly, penetrates through a shaft hole of the oil-containing metal powder bearing and protrudes downwards, and the protruding shaft core is provided with an annular groove; and
the annular movable pressing sheet is provided with an embedding hole and a sheet body positioned on the periphery of the embedding hole, the embedding hole is embedded and fixed in the annular groove of the shaft core, and a plurality of arc-shaped radial movable pressing grooves are formed in one surface of the sheet body facing the oil-containing metal powder bearing.
2. The dynamic pressure structure of a fan integrated with a plastic frame and an oil-containing metal powder bearing as claimed in claim 1, wherein the annular dynamic pressure plate further has a plurality of arc-shaped radial dynamic pressure grooves on a surface facing away from the oil-containing metal powder bearing.
3. The dynamic pressure structure of a fan in which a plastic frame is integrally formed with an oil-impregnated metal powder bearing as set forth in claim 1 or 2, wherein the end of the shaft core is a tapered end portion having a gradually decreasing outer diameter.
4. The dynamic pressure structure of fan formed by integrating plastic frame body and metal powder bearing containing oil as claimed in claim 3, wherein one face of the end of said cone body has a cut surface, and the inner wall of the embedding hole of said annular dynamic pressure plate has a cut wall corresponding to said cut surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920704181.4U CN209925261U (en) | 2019-05-16 | 2019-05-16 | Dynamic pressure structure of fan with plastic frame and oil-containing metal powder bearing integrally formed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920704181.4U CN209925261U (en) | 2019-05-16 | 2019-05-16 | Dynamic pressure structure of fan with plastic frame and oil-containing metal powder bearing integrally formed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209925261U true CN209925261U (en) | 2020-01-10 |
Family
ID=69090882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920704181.4U Active CN209925261U (en) | 2019-05-16 | 2019-05-16 | Dynamic pressure structure of fan with plastic frame and oil-containing metal powder bearing integrally formed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209925261U (en) |
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2019
- 2019-05-16 CN CN201920704181.4U patent/CN209925261U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220228 Address after: No. 61, East Wen'an Road, Mito District, Kaohsiung, Taiwan, China Patentee after: Yongshun International Co.,Ltd. Address before: 4, Lane 1, Lane 113, Mingde Road, Beitou District, Taipei, Taiwan, China Patentee before: Yongdong Precision Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230516 Address after: No. 61, East Wen'an Road, Mito District, Kaohsiung, Taiwan, China Patentee after: Yongshun International Co.,Ltd. Patentee after: Yongdong Precision Co.,Ltd. Address before: No. 61, East Wen'an Road, Mito District, Kaohsiung, Taiwan, China Patentee before: Yongshun International Co.,Ltd. |
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| TR01 | Transfer of patent right |