CN210068522U

CN210068522U - Duplex bearing type fan structure

Info

Publication number: CN210068522U
Application number: CN201920695401.1U
Authority: CN
Inventors: 张正坤; 欧阳普才
Original assignee: Dongguan Qingyu Electronic Technology Co Ltd
Current assignee: Dongguan Qingyu Electronic Technology Co Ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-02-14
Anticipated expiration: 2029-05-15

Abstract

The utility model discloses a duplex bearing type fan structure, it includes base, motor stator, flabellum and motor rotor, is fixed with hollow metal well pipe on this base, and the intraductal first, second bearing and the china department of arranging between first, second bearing of installing of metal, and the inlay card of metal well bottom is fixed with the holding ring, and the holding ring is intraductal with first, second bearing locking in this metal well, and keep first, second bearing concentric; the rotating shaft fixed in the fan blade penetrates through the metal middle pipe and sequentially penetrates through the first bearing and the second bearing. The utility model adopts the metal middle pipe made of metal to load the first bearing and the second bearing, and the positioning ring is embedded and fixed at the bottom of the metal middle pipe, thereby ensuring the structural strength and the concentricity of the first bearing and the second bearing after assembly, thereby prolonging the service life of the product and reducing the friction noise; the utility model discloses separate through the china department at first, second bearing to can prevent that the two inside lubricating grease cluster from thoughtlessly influencing its life-span and noise.

Description

Duplex bearing type fan structure

The technical field is as follows:

the utility model relates to a radiator fan product technical field refers in particular to a duplex bearing type fan structure.

Background art:

with the development of the electronic industry, the development of electronic products is gradually progressing towards high performance, high frequency, high speed and light weight. Along with the performance of electronic products is promoted constantly, the operation speed is faster and faster, the operation speed of the chip group in the electronic products is promoted constantly, the number of chips is increased constantly, the heat emitted by the chips during working is correspondingly increased, if the heat is not dissipated in time, the performance of the electronic products can be greatly influenced, the operation speed of the electronic products is reduced, along with the continuous accumulation of the heat, the electronic products can be burnt, and therefore the heat of the electronic products must be dissipated.

Radiator fan plays very important role in the electronic product heat dissipation of present stage, and radiator fan among the prior art generally can adopt duplex bearing structure, adopts two bearings promptly to this stability of pivot assembly in guaranteeing the flabellum, and can guarantee that the flabellum is rotatory more smoothly, but following problem can appear: after the rotating shaft in the fan blade is used for a long time, the concentricity of the two bearings cannot be guaranteed, the service life of a product is influenced, and the problem of larger noise can be caused. In addition, the grease between the two bearings is mixed with each other, which also affects the life and noise thereof.

In view of the above, the present inventors propose the following.

The utility model has the following contents:

an object of the utility model is to overcome prior art not enough, provide a duplex bearing type fan structure.

In order to solve the technical problem, the utility model discloses a following technical scheme: the double-bearing type fan structure comprises a base, a motor stator arranged on the base, a fan blade which is arranged on the motor stator and can rotate relative to the motor stator, and a motor rotor which is fixed in the fan blade and is matched with the motor stator, wherein a hollow metal middle pipe is fixed on the base, a first bearing, a second bearing and a washer which is arranged between the first bearing and the second bearing and used for separating the first bearing and the second bearing are arranged in the metal middle pipe, a positioning ring is fixedly clamped and embedded at the bottom of the metal middle pipe, and the first bearing and the second bearing are locked in the metal middle pipe by the positioning ring and are kept concentric; the fixed rotating shaft in the fan blade penetrates into the metal middle pipe and sequentially penetrates through the first bearing and the second bearing.

Further, in the above technical solution, the first bearing is a ball bearing, and the second bearing is an oil-retaining bearing.

Further, in the above technical solution, a plurality of oil passages are formed at the periphery of the oil-retaining bearing, and the oil passages are communicated with the first shaft hole of the oil-retaining bearing.

Further, in the above technical solution, the metal middle pipe is a copper middle pipe.

Furthermore, in the above technical solution, the lower end of the rotating shaft further extends into the positioning ring, and the lower end of the rotating shaft is further fixed with a snap ring in a snap fit manner.

Furthermore, in the above technical solution, an annular flange is formed inward at an edge of an opening at the upper end of the metal middle pipe, and the annular flange is in contact with an outer edge of the upper end of the first bearing.

Furthermore, in the above technical solution, the fan blade includes a hub and a plurality of blades formed at the periphery of the hub and distributed in a spiral shape, and the hub is fixed to the upper end of the rotating shaft.

Further, in the above technical solution, the blade is flat and perpendicular to the end face of the hub.

Furthermore, in the above technical solution, the positioning ring is a copper ring, a circle of positioning protrusion is formed on the periphery of the copper ring, and the positioning protrusion is in abutting contact with the inner wall of the metal middle pipe.

After the technical scheme is adopted, compared with the prior art, the utility model has following beneficial effect: the utility model discloses a first bearing and second bearing are loaded to the metal well pipe of the integral type structure that the metal was made to bottom the metal well pipe is fixed in to the holding ring inlay card, with this with first bearing and second bearing stable assembly in this metal well intraductal portion, and can guarantee structural strength, still can guarantee to accomplish the concentricity of the first bearing after the assembly and second bearing, thereby improve the life-span of product and reduce the friction noise, in addition, the utility model discloses install the huasi between first bearing and second bearing, this huasi separates first bearing and second bearing to can prevent that the two inside lubricating grease cluster from mixing its life-span and noise of influence.

Description of the drawings:

fig. 1 is a perspective view of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a three-dimensional exploded product diagram of the present invention.

The specific implementation mode is as follows:

the present invention will be further described with reference to the following specific embodiments and accompanying drawings.

As shown in fig. 1-3, a dual-bearing fan structure is disclosed, which includes a base 1, a motor stator 2 mounted on the base 1, a fan blade 3 mounted on the motor stator 2 and capable of rotating relative to the motor stator 2, and a motor rotor 4 fixed in the fan blade 3 and adapted to the motor stator 2, wherein a hollow metal middle tube 5 is fixed on the base 1, a first bearing 51, a second bearing 52, and a washer 53 disposed between the first bearing 51 and the second bearing 52 and used for separating the first bearing 51 from the second bearing 52 are mounted in the metal middle tube 5, and a positioning ring 54 is fixed at the bottom of the metal middle tube 5 in a snap-fit manner, and the positioning ring 54 locks the first bearing 51 and the second bearing 52 in the metal middle tube 5 and keeps the first bearing 51 and the second bearing 52 concentric; the rotating shaft 6 fixed in the fan blade 3 penetrates the metal middle pipe 5 and sequentially penetrates the first bearing 51 and the second bearing 52. The utility model discloses a first bearing 51 and second bearing 52 are loaded to metal well pipe 5 of integral type structure that the metal was made to be fixed in metal well pipe 5 bottom with holding ring 54 inlay card, with this with first bearing 51 and second bearing 52 stable assembly in this metal well pipe 5 inside, and can guarantee structural strength, still can guarantee to accomplish the concentricity of first bearing 51 and second bearing 52 after the assembly, thereby improve the life-span of product and reduce the friction noise, in addition, the utility model discloses install china department 53 between first bearing 51 and second bearing 52, this china department 53 separates first bearing 51 and second bearing 52, and can prevent that the two inside lubricating grease cluster from mixing its life-span and noise of influence.

The first bearing 51 is a ball bearing, the second bearing 52 is an oil bearing, the rotating shaft 6 is fixed with an inner ring of the ball bearing, and an outer ring of the ball bearing is in pressing contact with the metal middle pipe 5. A plurality of oil passages 521 are formed on the periphery of the oil-retaining bearing, and the oil passages 521 are communicated with a first shaft hole 522 of the oil-retaining bearing, so that the oil content of the oil-retaining bearing is ensured, and the rotating shaft 6 can rotate more smoothly.

The metal middle pipe 5 is a copper middle pipe.

The lower end of the rotating shaft 6 also extends into the positioning ring 54, and the lower end of the rotating shaft 6 is also fixedly clamped with a retaining ring 61, so that the rotating shaft 6 is stably installed on the metal middle pipe 5.

An annular flange 55 is formed inwards at the edge of the opening at the upper end of the metal middle pipe 5, and the annular flange 55 is in contact with the outer edge of the upper end of the first bearing 51, so that the stability of the assembling structure is ensured.

The flabellum 3 is including wheel hub 31 and plural number shaping in this wheel hub 31 periphery and be the blade 32 of heliciform distribution, this wheel hub 31 with pivot 6 upper end is fixed, and the flabellum 3 of this structure can produce bigger amount of wind, and it is more convenient to use. The blades 32 are flat and perpendicular to the end surface of the hub 31.

The positioning ring 54 is a copper ring, a ring of positioning protrusions 541 is formed on the periphery of the copper ring, and the positioning protrusions 541 are in pressing contact with the inner wall of the metal middle tube 5, so that the positioning ring 54 is stably assembled in the metal middle tube 5.

To sum up, the utility model discloses a pipe 5 loads first bearing 51 and second bearing 52 in the metal of the integral type structure that the metal was made to be fixed in 5 bottoms in the metal with holding ring 54 inlay card, with this with first bearing 51 and second bearing 52 stable assembly in this pipe 5 insidely in the metal, and can guarantee structural strength, still can guarantee to accomplish the concentricity of first bearing 51 and second bearing 52 after the assembly, thereby improve the life-span of product and reduce friction noise, in addition, the utility model discloses install china department 53 between first bearing 51 and second bearing 52, this china department 53 separates first bearing 51 and second bearing 52, and can prevent that the two inside lubricating grease cluster from mixing its life-span and noise of influence.

Of course, the above description is only an exemplary embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes and modifications made by the constructions, features, and principles of the present invention in accordance with the claims of the present invention are intended to be included in the scope of the present invention.

Claims

1. A duplex bearing type fan structure, it includes base (1), install motor stator (2) on base (1) and install on this motor stator (2) and can be relative flabellum (3) of this motor stator (2) rotation and be fixed in this flabellum (3) and with motor rotor (4) of this motor stator (2) adaptation, its characterized in that: the bearing comprises a base (1), wherein a hollow metal middle pipe (5) is fixed on the base (1), a first bearing (51), a second bearing (52) and a washer (53) which is arranged between the first bearing (51) and the second bearing (52) and used for separating the first bearing (51) from the second bearing (52) are installed in the metal middle pipe (5), a positioning ring (54) is fixedly embedded at the bottom of the metal middle pipe (5), the first bearing (51) and the second bearing (52) are fixedly locked in the metal middle pipe (5) by the positioning ring (54), and the first bearing (51) and the second bearing (52) are kept concentric; the rotating shaft (6) fixed in the fan blade (3) penetrates into the metal middle pipe (5) and sequentially penetrates through the first bearing (51) and the second bearing (52).

2. A dual bearing type fan structure according to claim 1, wherein: the first bearing (51) is a ball bearing, and the second bearing (52) is an oil bearing.

3. A dual bearing type fan structure according to claim 2, wherein: a plurality of oil channels (521) are formed on the periphery of the oil-retaining bearing, and the oil channels (521) are communicated with a first shaft hole (522) of the oil-retaining bearing.

4. A dual bearing type fan structure according to claim 1, wherein: the metal middle pipe (5) is a copper middle pipe.

5. A dual bearing type fan structure according to claim 1, wherein: the lower end of the rotating shaft (6) also extends into the positioning ring (54), and a snap ring (61) is clamped and fixed at the lower end of the rotating shaft (6).

6. A dual bearing type fan structure according to any one of claims 1 to 5, wherein: an annular flange (55) is formed inwards at the edge of an opening at the upper end of the metal middle pipe (5), and the annular flange (55) is in contact with the outer edge of the upper end of the first bearing (51).

7. A dual bearing type fan structure according to claim 6, wherein: the fan blade (3) comprises a hub (31) and a plurality of blades (32) which are formed on the periphery of the hub (31) and distributed in a spiral shape, and the hub (31) is fixed with the upper end of the rotating shaft (6).

8. A dual bearing type fan structure according to claim 7, wherein: the blades (32) are flat and perpendicular to the end face of the hub (31).

9. A dual bearing type fan structure according to claim 6, wherein: the positioning ring (54) is a copper ring, a circle of positioning bulge (541) is formed on the periphery of the copper ring, and the positioning bulge (541) is in pressing contact with the inner wall of the metal middle pipe (5).