CN216812209U

CN216812209U - Heat radiation fan

Info

Publication number: CN216812209U
Application number: CN202123079232.5U
Authority: CN
Inventors: 宋三强; 刘典盛; 许实满
Original assignee: Yahao Electronic Hardware & Plastic Huizhou Co ltd
Current assignee: Yahao Electronic Hardware & Plastic Huizhou Co ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2022-06-24
Anticipated expiration: 2031-12-09

Abstract

The utility model discloses a cooling fan which comprises a frame, a stability maintaining component, a rotating shaft, fan blades and a driving component. The frame epirelief is equipped with the bearing frame, and the bearing frame epirelief is equipped with the accommodation space. The stability maintaining component is arranged in the accommodating space and comprises a bearing and a magnetic ring which are coaxially arranged, the bearing is positioned above the magnetic ring, and the bearing is magnetically conducted by the magnetic ring. The rotating shaft penetrates through the bearing and the magnetic ring so as to enable the rotating shaft to rotate relative to the frame. The upper end of the rotating shaft is fixedly connected with the fan blades, and the fan blades rotate relative to the frame through the rotating shaft and the bearing. The driving assembly comprises a stator and a rotor, the stator is sleeved outside the bearing seat, and the rotor is arranged on the fan blades; the driving assembly is used for driving the fan blades to rotate relative to the frame. The heat radiation fan enables the bearing and the magnetic ring after being conducted with magnetism to absorb the rotating shaft through the non-contact magnetic attraction, avoids the rotating shaft from deflecting or swinging in the rotating process, enables the heat radiation fan to operate more stably, reduces vibration and noise, and prolongs the service life of the heat radiation fan.

Description

Heat radiation fan

Technical Field

The present invention relates to a heat dissipation fan, and more particularly, to a heat dissipation fan with a more stable operation.

Background

With the rapid development of electronic technology, many electronic devices are being developed to have high performance and high speed, and the heat generated by the electronic devices is increasing, so that the heat dissipation device such as a fan is the most basic configuration. Whether the cooling fan can run stably or not directly determines the running stability and the service life of the electronic element. The smoothness of the fan operation is often determined by the operation state of the rotor, wherein it is more important whether the rotating shaft as the rotating center can always keep stable rotation during the fan operation.

In the running process of the fan, the rotating shaft rotates in the bearing, and because the rotating shaft and the bearing are in a clearance fit state, the rotating shaft is easy to deflect, swing and other unstable rotating phenomena, and further generates vibration and noise; the higher the rotating speed of the fan is, the more obvious the phenomenon that the rotating shaft is unstable, and the service life of the fan is directly influenced.

Therefore, how to realize the stability of the rotation of the rotating shaft is a key problem to be solved by the utility model.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a heat dissipation fan for achieving stability of rotation of a rotating shaft, so as to make the fan operate more stably.

The heat dissipation fan disclosed in an embodiment of the present invention includes a frame, a one-dimensional stabilizer, a shaft, a fan blade, and a driving assembly. The frame is convexly provided with a bearing seat, and the bearing seat is concavely provided with an accommodating space. The stability maintaining component is arranged in the accommodating space and comprises a bearing and a magnetic ring which are coaxially arranged, the bearing is positioned above the magnetic ring, and the bearing is magnetically conducted by the magnetic ring. The rotating shaft penetrates through the bearing and the magnetic ring so as to enable the rotating shaft to rotate relative to the frame. The upper end of the rotating shaft is fixedly connected with the fan blades, and the fan blades rotate relative to the frame through the rotating shaft and the bearing. The driving assembly comprises a stator and a rotor, the stator is sleeved outside the bearing seat, the rotor is arranged on the fan blades, and the stator is surrounded by the rotor; the driving assembly is used for driving the fan blades to rotate relative to the frame.

The heat dissipation fan disclosed in another embodiment of the present invention includes a frame, a one-dimensional stabilizer, a shaft, a fan blade, and a driving component. The frame is convexly provided with a bearing seat, and the bearing seat is concavely provided with an accommodating space. The stability maintaining component is arranged in the accommodating space and comprises a magnetic ring and a bearing which are coaxially arranged, the magnetic ring is positioned above the bearing, and the bearing is magnetically conducted by the magnetic ring. The rotating shaft penetrates through the magnetic ring and the bearing so as to enable the rotating shaft to rotate relative to the frame. The upper end of the rotating shaft is fixedly connected with the fan blades, and the fan blades rotate relative to the frame through the rotating shaft and the bearing. The driving assembly comprises a stator and a rotor, the stator is sleeved outside the bearing seat, the rotor is arranged on the fan blades, and the stator is surrounded by the rotor; the driving assembly is used for driving the fan blades to rotate relative to the frame.

According to the cooling fan of the embodiment, because the bearing is close to the magnetic ring, and the bearing is conducted by the magnetic ring, the bearing and the magnetic ring after being conducted can attract the rotating shaft through the non-contact magnetic attraction force, so that the rotating shaft is not easy to deflect or swing and other unstable rotating phenomena in the rotating process, the rotating stability of the rotating shaft is improved, the operation of the cooling fan is more stable, the vibration and the noise are reduced, and the service life of the cooling fan is effectively prolonged.

The foregoing summary of the utility model and the following detailed description of the embodiments are provided to illustrate and explain the principles of the utility model and to provide further explanation of the utility model as claimed.

Drawings

Fig. 1 is a perspective view of a heat dissipation fan according to a first embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic cross-sectional view of FIG. 1;

fig. 4 is a perspective view of a heat dissipation fan according to a second embodiment of the present invention;

FIG. 5 is an exploded view of FIG. 4;

fig. 6 is a schematic cross-sectional view of fig. 4.

Wherein, the reference numbers:

10. 10A: heat radiation fan

100. 100A: frame structure

110. 110A: bearing seat

200. 200A: steady subassembly of dimension

210. 210A: bearing assembly

220. 220A: magnetic ring

230. 230A: wear-resistant sheet

240. 240A: retaining ring

250: locating ring

300. 300A: rotating shaft

400. 400A: fan blade

410. 410A: wheel hub

420. 420A: blade

500. 500A: drive assembly

510. 510A: stator

520. 520A: rotor

S: containing space

X: axial direction

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The exemplary embodiments of the present invention and the description thereof are provided to explain the present invention and not to limit the present invention. Additionally, the same or similar numbered elements/components used in the drawings and the embodiments are used to represent the same or similar parts.

With respect to directional terminology used herein, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology used is intended to be illustrative and is not intended to be limiting of the present teachings.

As used herein, the terms "comprising," "including," "having," "containing," and the like are open-ended terms that mean including, but not limited to.

As used herein, "and/or" includes any and all combinations of the described items.

References to "plurality" herein include "two" and "more than two"; reference to "multiple sets" herein includes "two sets" and "more than two sets".

Certain words used to describe the present application are discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the present application.

Please refer to fig. 1 to 3. Fig. 1 is a perspective view of a heat dissipation fan 10 according to a first embodiment of the present invention; FIG. 2 is an exploded view of FIG. 1; fig. 3 is a schematic cross-sectional view of fig. 1.

The heat dissipation fan 10 of the present embodiment is, for example, an axial flow fan, and includes a frame 100, a stabilizer 200, a shaft 300, a fan blade 400, and a driving assembly 500. Wherein the content of the first and second substances,

the frame 100 is provided with a bearing seat 110, and the bearing seat 110 is provided with an accommodating space S.

The stabilizing member 200 is installed in the accommodating space S. The stabilizer assembly 200 includes a bearing 210 and a magnetic ring 220 coaxially disposed, the bearing 210 is disposed above the magnetic ring 220, and the bearing 210 is magnetically conducted by the magnetic ring 220.

The rotating shaft 300 penetrates through the bearing 210 and the magnetic ring 220, so that the rotating shaft 300 rotates in the bearing 210, namely rotates relative to the frame 100; further, the magnetic ring 220 and the magnetically conductive bearing 210 generate a magnetic attraction force on the rotating shaft 300, so that the rotating shaft 300 stably rotates relative to the frame 100. It can be understood that the rotating shaft 300 and the bearing 210 are in a clearance fit state; the shaft 300 and the magnetic ring 220 are not in direct contact with each other, and a radial gap is formed between the shaft 300 and the magnetic ring.

The fan 400 is, for example, an axial flow fan, and includes a hub 410 and a plurality of blades 420. The blades 420 are attached to the outer edge of the hub 410. The upper end of the rotating shaft 300 is fixedly connected to the hub 410 of the fan blade 400, and the fan blade 420 rotates relative to the frame 100 through the rotating shaft 300 and the bearing 210.

The driving assembly 500 includes a stator 510 and a rotor 520. The stator 510 is, for example, a driving coil, and is sleeved outside the bearing seat 110 of the frame 100; rotor 520 is, for example, a magnet, and is installed in hub 410 of fan blade 400; it is understood that the rotor 520 surrounds the stator 510. The driving assembly 500 is used for driving the fan 400 to rotate relative to the frame 100.

Further, since the bearing 210 is magnetically conducted by the magnetic ring 220, the magnetic ring 220 and the magnetically conducted bearing 210 can attract the rotating shaft 300 through a non-contact magnetic attraction force, so that the rotating shaft 300 is not prone to unstable rotation such as deflection or swing during rotation, the stability of rotation of the rotating shaft 300 is improved, the operation of the cooling fan 10 is further stabilized, vibration and noise are reduced, and the service life of the cooling fan 10 is effectively prolonged.

In addition, in the embodiment, the magnetic rings 220 are annular and the number thereof is single, but the utility model is not limited thereto. In other embodiments, the magnetic ring 220 may be a plurality of blocks and arranged around the shaft 300.

Further, the magnetic ring 220 is located below the bearing 210, so that the magnetic ring 220 can be used as a gasket, the types and the number of assembling parts are simplified, and the assembling convenience of the cooling fan 10 is improved.

Further, the stabilizer assembly 200 further includes a wear plate 230. The wear-resistant sheet 230 is sandwiched between the lower end surface of the rotating shaft 300 and the bottom surface of the accommodating space S, and the hardness of the wear-resistant sheet 230 is greater than that of the bearing seat 110, so as to improve the wear of the rotating shaft 300 on the bearing seat 110 during rotation and prolong the service life of the frame 100.

Further, the stabilizer assembly 200 further includes a retaining ring 240. The retaining ring 240 is clamped between the bearing 210 and the magnetic ring 220, and is clamped to the rotating shaft 300 in the circumferential direction to limit the axial movement X of the rotating shaft 300. Further, the circumferential direction of the rotating shaft 300 is concavely provided with a positioning groove, and the retaining ring 240 is clamped in the positioning groove to prevent the rotating shaft 300 from moving along the axial direction X during the rotating process.

Further, the stabilizer assembly 200 further includes a positioning ring 250. The positioning ring 250 is installed in the receiving space S and located above the bearing 210, and surrounds the rotating shaft 300 therein. It will be appreciated that the retaining ring 250 is not in direct contact with the shaft 300, but rather has a radial clearance therebetween. The positioning ring 250 is located above the bearing 210 and integrated with the bearing seat 110 in a hot-melt connection manner, so that the bearing 210 is limited and fixed in the axial direction X, and the oil throwing condition of the bearing 210 is prevented.

Please refer to fig. 4 to 6. Fig. 1 is a perspective view of a heat dissipation fan 10A according to a second embodiment of the present invention; FIG. 5 is an exploded view of FIG. 4; fig. 6 is a schematic cross-sectional view of fig. 4.

The heat dissipation fan 10A of the present embodiment is, for example, an axial flow fan, and includes a frame 100A, a stabilizer 200A, a shaft 300A, a fan blade 400A and a driving assembly 500A. Wherein the content of the first and second substances,

the frame 100A is provided with a bearing seat 110A, and the bearing seat 110A is provided with an accommodating space S.

The stabilizer 200A is installed in the accommodating space S. The maintenance assembly 200A includes a magnetic ring 220A and a bearing 210A, which are coaxially disposed, the magnetic ring 220A is located above the bearing 210A, and the bearing 210A is magnetically conducted by the magnetic ring 220A.

The rotating shaft 300A penetrates through the magnetic ring 220A and the bearing 210A, so that the rotating shaft 300A rotates in the bearing 210A, i.e., rotates relative to the frame 100A; further, the magnetic ring 220A and the bearing 210A generate a magnetic attraction force on the rotating shaft 300A, so that the rotating shaft 300A stably rotates relative to the frame 100A. It can be understood that the rotating shaft 300A and the bearing 210A are in a clearance fit state; the rotating shaft 300A and the magnetic ring 220A are not in direct contact with each other, and a radial gap is formed between the two.

The fan 400A is, for example, an axial flow fan, and includes a hub 410A and a plurality of blades 420A. The blades 420A are attached to the outer edge of the hub 410A. The upper end of the rotating shaft 300A is fixedly connected to the hub 410A of the fan 400A, and the fan 420A rotates relative to the frame 100A through the rotating shaft 300A and the bearing 210A.

The drive assembly 500A includes a stator 510A and a rotor 520A. The stator 510A is, for example, a driving coil, and is sleeved outside the bearing seat 110A of the frame 100A; rotor 520A is, for example, a magnet, and is mounted in hub 410A of fan blade 400A; it is understood that the rotor 520A surrounds the stator 510A. The driving assembly 500A is used for driving the fan 400A to rotate relative to the frame 100A.

Further, since the bearing 210A is magnetically conducted by the magnetic ring 220A, the magnetic ring 220A and the magnetically conducted bearing 210A can attract the rotating shaft 300A through a non-contact magnetic attraction force, so that the rotating shaft 300A is not prone to rotation instability such as deflection or swing during rotation, the rotation stability of the rotating shaft 300A is improved, the operation of the cooling fan 10A is further stabilized, vibration and noise are reduced, and the service life of the cooling fan 10A is effectively prolonged.

In addition, in the embodiment, the magnetic rings 220A are annular and the number thereof is single, but the utility model is not limited thereto. In other embodiments, the magnetic ring 220A may be block-shaped and have a plurality of numbers, and is annularly arranged around the rotation shaft 300A.

Further, the magnetic ring 220A is located above the bearing 210A, so that the magnetic ring 220A can also be used as a positioning ring; the magnetic ring 220A is integrated with the bearing seat 110A in a hot-melt connection manner, so that the bearing 210A is limited and fixed in the axial direction X, and the bearing 210A is prevented from oil throwing, thereby simplifying the types and number of assembling parts and improving the assembling convenience of the cooling fan 10A.

Further, the dimensionally stable assembly 200A further includes a wear pad 230A. The wear-resistant plate 230A is clamped between the lower end surface of the rotating shaft 300A and the bottom surface of the accommodating space S, and the hardness of the wear-resistant plate 230A is greater than that of the bearing seat 110A, so as to improve the wear of the rotating shaft 300A on the bearing seat 110A during rotation and prolong the service life of the frame 100A.

Further, the stabilizer assembly 200A further includes a retaining ring 240A. The retaining ring 240A is clamped between the bearing 210A and the magnetic ring 220A, and is circumferentially clamped to the rotating shaft 300A to limit the axial movement X of the rotating shaft 300A. Further, the rotating shaft 300A is provided with a positioning groove in an upward concave manner in a circumferential direction, and the retaining ring 240A is clamped in the positioning groove to prevent the rotating shaft 300A from moving along the axial direction X during the rotating process.

It will be appreciated that the retaining ring 240A is at a different level than the wear plate 230A, the retaining ring 240A being closer to the bearing 210A than the wear plate 230A; that is, the bearing seat 110A has two planes with different heights for holding the retaining ring 240A and the wear plate 230A.

According to the cooling fan of the embodiment of the utility model, because the bearing is close to the magnetic ring and the bearing is magnetically conducted by the magnetic ring, the bearing and the magnetic ring after being magnetically conducted can attract the rotating shaft through the non-contact magnetic attraction force, so that the rotating shaft is not easy to deflect or swing and other unstable rotation phenomena in the rotating process, the rotating stability of the rotating shaft is improved, the operation of the cooling fan is more stable, the vibration and the noise are reduced, and the service life of the cooling fan is effectively prolonged.

Although the present invention has been described with reference to the foregoing embodiments, it should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. A heat dissipating fan, comprising:

the frame is convexly provided with a bearing seat, and the bearing seat is concavely provided with an accommodating space;

the one-dimensional stability assembly is arranged in the accommodating space and comprises a bearing and a magnetic ring which are coaxially arranged, the bearing is positioned above the magnetic ring, and the bearing is magnetically conducted by the magnetic ring;

the rotating shaft penetrates through the bearing and the magnetic ring so as to enable the rotating shaft to rotate relative to the frame;

the upper end of the rotating shaft is fixedly connected with the fan blade, and the fan blade rotates relative to the frame through the rotating shaft and the bearing;

the driving assembly comprises a stator and a rotor, the stator is sleeved outside the bearing seat, the rotor is arranged on the fan blades, and the rotor surrounds the stator; the driving assembly is used for driving the fan blades to rotate relative to the frame.

2. The heat dissipating fan according to claim 1, wherein the stabilizer assembly further comprises a wear pad sandwiched between a lower end surface of the rotating shaft and a bottom surface of the accommodating space, and a hardness of the wear pad is greater than a hardness of the bearing housing.

3. The heat dissipating fan as claimed in claim 1, wherein the stabilizer assembly further comprises a retaining ring clamped between the bearing and the magnetic ring and engaged with the shaft to limit axial movement of the shaft.

4. The heat dissipating fan of claim 1, wherein the stabilizer assembly further comprises a positioning ring, the positioning ring is installed in the accommodating space and located above the bearing, and surrounds the rotating shaft.

5. The heat dissipating fan as claimed in claim 1, wherein the magnetic ring comprises at least one magnetic block, and the at least one magnetic block is annularly arranged around the rotating shaft.

6. A heat dissipating fan, comprising:

the one-dimensional stability assembly is arranged in the accommodating space and comprises a magnetic ring and a bearing which are coaxially arranged, the magnetic ring is positioned above the bearing, and the bearing is magnetically conducted by the magnetic ring;

the rotating shaft penetrates through the magnetic ring and the bearing so as to enable the rotating shaft to rotate relative to the frame;

7. The heat dissipating fan according to claim 6, wherein the stabilizer assembly further comprises a wear pad sandwiched between a lower end surface of the rotating shaft and a bottom surface of the accommodating space, and a hardness of the wear pad is greater than a hardness of the bearing housing.

8. The heat dissipating fan as claimed in claim 7, wherein the stabilizer assembly further comprises a retaining ring clamped between the bearing and the magnetic ring and engaged with the shaft in a circumferential direction to limit axial play of the shaft; the retaining ring is closer to the bearing than the wear plate.

9. The heat dissipating fan as claimed in claim 6, wherein the magnetic ring comprises at least one magnetic block, and the at least one magnetic block is annularly arranged around the rotating shaft.