TWM583073U - Heat dissipating fan and electronic device having the same - Google Patents

Abstract

A heat dissipating fan includes a housing, a stator, and a rotor. The housing includes a base. A hollow tube protrudes from a surface of the base. A through-hole is defined on the hollow tube. The housing further includes a barrel, a first buffer structure formed on a whole outer surface of the barrel, and a second buffer structure. An end portion of the barrel is received in the through-hole. The barrel and the hollow tube are separated by the first buffer structure. The stator is sleeved on the first buffer structure. The second buffer structure is annular and formed on an outer surface of the first buffer structure to resist between the hollow tube and the stator, thereby separating the hollow tube and the stator. The rotor is mounted on the barrel by a shaft. The disclosure also provides an electronic device having the heat dissipating fan.

Description

Cooling fan and electronic device using the same

The present invention relates to a heat dissipation fan and an electronic device using the same.

With the rapid development of electronic technology, the heat-generating electronic components such as the central processing unit are running faster and faster, and the heat generated during operation is correspondingly increased. In order to dissipate the heat to ensure the normal operation of the electronic components, the industry adopts a fan pair. Electronic components dissipate heat. A conventional fan generally includes a stator, a rotor, and a frame that houses the stator and the rotor. The stator includes a stator core and a coil wound on the stator core. The rotor ring is disposed at the periphery of the stator and includes a magnet opposite the coil. In operation, the coil is energized such that the magnetic field generated by the stator interacts with the magnet of the rotor, which drives the rotor to operate relative to the stator to produce a wind blown to the electronic component to carry away the heat generated by the electronic component. However, when the fan is running, the fan is subject to vibration, noise, and the like due to uneven rotor quality distribution and torque conversion caused by motor commutation. The vibration of the fan easily causes loose installation of the fan, which in turn affects the structural stability of the entire heat sink. In addition, the vibration of the fan is also likely to cause poor stability of the working system, and even damage to the components.

In view of this, it is necessary to provide a cooling fan that can effectively reduce vibration.

A heat dissipating fan includes a housing and a stator and a rotor mounted in the housing, the housing including a base, the base protrudes from a surface with a hollow column, and the hollow column is formed in the axial direction Consistently perforating, the housing further includes a shaft cylinder and a first shock absorbing structure covering the outer wall of the shaft cylinder, one end of the shaft cylinder is received and fixed in the through hole, and the shaft barrel is The hollow column is separated by the first shock absorbing structure, the stator is sleeved on the first shock absorbing structure of the shaft cylinder, and the casing further includes a second shock absorbing structure, the second shock absorbing structure The structure is annularly formed on the outer wall of the first shock absorbing structure, and is abutted between the end surface of the hollow column and the stator to separate the hollow column and the stator, and the rotor Mounted in the shaft cylinder by a rotating shaft, the rotor, the stator and the casing are separated by the first shock absorbing structure and the second shock absorbing structure, so that the rotor and the stator The resulting shock is absorbed before being passed to the housing.

Further, the first shock absorbing structure is directly coupled to the entire outer wall of the barrel.

Further, the second shock absorbing structure and the first shock absorbing structure are an integrally formed structure.

Further, the second shock absorbing structure is detachably sleeved on an outer wall of the first shock absorbing structure.

Further, the shaft cylinder defines a receiving hole in the axial direction, a bearing is fixed in the receiving hole, and the bearing forms a shaft hole along an axial direction of the shaft cylinder, and the rotating shaft is mounted on the shaft hole Inside.

Further, the base is directly coupled to an outer wall of the first shock absorbing structure of the barrel.

Further, the outer wall of the barrel is recessed inwardly to form at least one groove, and the first damper structure covers the entire outer wall of the barrel and fills the groove.

An electronic device includes a heat dissipation fan as described above.

The heat dissipation fan of the present invention absorbs the vibration transmitted by the rotor and the stator by the first damping structure and the second damping structure, thereby reducing the vibration of the rotor and the stator to the housing and the electronic device. The effect of the connection of other electronic components can also achieve the effect of noise reduction.

The technical solutions in the present invention are clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts are within the scope of the present invention.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description of the present invention is for the purpose of describing particular embodiments and is not intended to limit the invention.

Referring to FIG. 1 to FIG. 2 , a preferred embodiment of the present invention provides a heat dissipation fan 100 including a housing 10 , a stator 20 received in the housing 10 , and a housing 20 . The rotor 30 within 10.

The housing 10 includes a hollow frame 11 and a base 13 disposed at the center of the bottom of the frame 11. An air inlet 111 is formed at the top of the frame 11, and an air outlet 113 is formed at a bottom opposite to the air inlet 111. The base 13 is disposed at the center of the air outlet 113.

A hollow column 130 protrudes from the upper surface of the base 13 toward the air inlet 111 in the center of the base 13 . The center of the hollow column 130 forms a uniform through hole 131 in the axial direction.

The housing 10 further includes a shaft barrel 132 that is received at one end and fixed in the through hole 131. The entire outer wall of the shaft barrel 132 is covered by a spray coating, injection molding, molding or liquid molding. The structure 133 is shocked such that the shaft barrel 132 and the hollow column 130 are separated by the first shock absorbing structure 133.

The housing 10 further includes a second damper structure 135 formed annularly on the outer wall of the first damper structure 133 and abutting the end surface of the hollow column 130.

In the embodiment, the first damper structure 133 and the second damper structure 135 are integrally formed. In other embodiments, the second damper structure 135 is detachably sleeved on the first damper structure 133 and abuts the end surface of the hollow column 130.

The material of the first shock absorbing structure 133 and the second shock absorbing structure 135 may be selected from one of damping materials such as silicone resin, rubber, plastic or sponge.

In this embodiment, the outer wall of the barrel 132 may be recessed inwardly to form at least one groove (not labeled), and the first damper structure 133 covers the entire outer wall of the barrel 132 and fills the concave groove.

A receiving hole 136 is defined in the axial direction of the shaft tube 132. A bearing 137 is fixed in the receiving hole 136. The bearing 137 defines a shaft hole 138 along the axial direction.

In the present embodiment, the susceptor 13 is directly formed on the outer wall of the first damper structure 133 by injection molding. The base 13 and the frame 11 may be integrally formed, and may be connected and fixed by other means, such as engagement.

The stator 20 includes a stator core 21, a coil 22, a circuit board 23, and an insulating frame 24. The insulating frame 24 is made of an insulating material such as plastic or the like and is coated on the outside of the associated stator core 21. The coil 22 is wound around the insulating frame 24. The circuit board 23 is disposed at the bottom of the insulating frame 24 and electrically connected to the coil 22 . A coaxial hole corresponding to each other is formed in the center of the stator core 21, the insulating frame 24, and the circuit board 23, and an assembly hole 26 penetrating vertically is formed in the center of the entire stator 20 after assembly.

The stator 20 is sleeved on the first damper structure 133 by the mounting hole 26 and abuts the side of the second damper structure 135 away from the hollow column 130. The first shock absorbing structure 133 and the second shock absorbing structure 135 are disposed on the vibration conduction path between the stator 20 and the base 13 , and the first shock absorbing structure 133 and the second shock absorbing structure The 135 can absorb the vibration of the stator 20, thereby reducing the influence of the vibration of the stator 20 on the connection between the base 13 and even the housing 10 and other electronic components, and can also achieve the effect of noise reduction.

The rotor 30 includes a hub 31, a rotating shaft 32, a magnetic group 33 and a blade 34. The hub 31 includes a circular top wall 311 and a cylindrical side wall 312 extending vertically downward from the periphery of the top wall 311. The center of the top wall 311 protrudes downward to form a shaft seat 313, and a mounting hole 314 is formed in the shaft base 313. The top wall 311 further defines at least one connecting hole 315 around the shaft seat 313.

The first end of the rotating shaft 32 is mounted in the mounting hole 314, and the rotating shaft 32 extends vertically downward from the shaft seat 313 to form a second end 321 disposed opposite to the first end. .

The magnetic group 33 is mounted to an inner surface of the side wall 312. In the present embodiment, the magnetic group 33 has a ring shape.

In the present embodiment, the blade 34 is placed on the hub 31. The blade 34 includes a body 341 and a plurality of blades 343 that are disposed around the periphery of the body 341 and extend radially outward. The body 341 includes a circular top portion 344 substantially corresponding to the top wall 311 and a cylindrical side portion 345 extending substantially downward from the periphery of the top portion 344 and substantially corresponding to the side wall 312. The top portion 344 is formed with at least one holding portion 346 facing the inner wall of the top wall 311, and the holding portion 346 is engaged with the connecting hole 315 to fix the body 341. The vanes 343 are spaced apart from the outer side of the side 345 away from the side wall 312.

The second end 321 of the rotating shaft 32 is mounted in the shaft hole 138. Since the first shock absorbing structure 133 is disposed on the vibration conduction path between the rotor 30 and the stator 20 and the base 13, the vibration caused by the rotation of the rotor 30 is reduced to the stator 20 and the The effect of the base 13 and even the housing 10 is to reduce the influence of the vibration of the rotor 30 and the stator 20 on the connection between the base 13 and even the housing 10 and other electronic components, and also achieve noise reduction. Effect.

Referring to FIG. 3 , the embodiment further provides an electronic device 200 with the above-mentioned cooling fan 100. The electronic device 200 can be a server, a power supply, a charging pile, a computer host, a notebook computer, a game machine, and the like.

The heat dissipation fan 100 of the present invention absorbs the vibration transmitted by the rotor 30 and the stator 20 by the first damping structure 133 and the second damping structure 135, thereby reducing the vibration of the rotor 30 and the stator 20 against the shell. The effect of the connection of the body 10 with other electronic components can also achieve the effect of noise reduction.

In addition, various other changes and modifications may be made by those skilled in the art in light of the technical concept of the present invention, and all such changes and modifications are intended to fall within the scope of the present invention.

100‧‧‧ cooling fan

10‧‧‧shell

11‧‧‧ frame

111‧‧‧Air inlet

113‧‧‧air outlet

13‧‧‧Base

130‧‧‧ hollow column

131‧‧‧through holes

132‧‧‧ shaft tube

133‧‧‧First shock absorbing structure

135‧‧‧Second shock absorbing structure

136‧‧‧ receiving holes

137‧‧‧ bearing

138‧‧‧ shaft hole

20‧‧‧ Stator

21‧‧‧ Stator core

22‧‧‧ coil

23‧‧‧ Circuit board

24‧‧‧Insulation frame

26‧‧‧Installation holes

30‧‧‧Rotor

31‧‧·wheels

32‧‧‧ shaft

33‧‧‧ Magnetic Group

34‧‧‧ fan leaves

311‧‧‧ top wall

312‧‧‧ side wall

313‧‧‧ shaft seat

314‧‧‧Mounting holes

315‧‧‧connection hole

321‧‧‧ second end

341‧‧‧ Ontology

343‧‧‧ leaves

344‧‧‧ top

345‧‧‧ side

346‧‧‧Cars Department

200‧‧‧Electronic devices

FIG. 1 is a perspective view of a heat dissipation fan provided by the new embodiment.

2 is a cross-sectional view of the heat dissipation fan provided in FIG. 1.

3 is a perspective view of an electronic device according to an embodiment of the present invention.

Claims (8)

A heat dissipating fan includes a housing and a stator and a rotor mounted in the housing, the housing including a base, the base protrudes from a surface with a hollow column, and the hollow column is formed in the axial direction Consistently perforating, the housing further includes a shaft cylinder and a first shock absorbing structure covering the outer wall of the shaft cylinder, one end of the shaft cylinder is received and fixed in the through hole, and the shaft barrel is The hollow column is separated by the first shock absorbing structure, the stator is sleeved on the first shock absorbing structure of the shaft cylinder, and the casing further includes a second shock absorbing structure, the second shock absorbing structure The structure is annularly formed on the outer wall of the first shock absorbing structure, and is abutted between the end surface of the hollow column and the stator to separate the hollow column and the stator, and the rotor Mounted in the shaft cylinder by a rotating shaft, the rotor, the stator and the casing are separated by the first shock absorbing structure and the second shock absorbing structure, so that the rotor and the stator The resulting shock is absorbed before being passed to the housing. The heat dissipation fan of claim 1, wherein the first shock absorbing structure is directly coupled to the entire outer wall of the barrel. The heat dissipation fan of claim 2, wherein the second shock absorbing structure and the first shock absorbing structure are integrally formed. The heat dissipation fan of claim 2, wherein the second shock absorbing structure is detachably sleeved on an outer wall of the first shock absorbing structure. The heat dissipation fan of claim 1, wherein the shaft barrel defines a receiving hole in the axial direction, a bearing is fixed in the receiving hole, and the bearing is formed along an axial direction of the shaft barrel. a shaft hole, the shaft is mounted in the shaft hole. The heat dissipation fan of claim 1, wherein the base is directly coupled to an outer wall of the first shock absorbing structure of the barrel. The heat dissipation fan of claim 1, wherein the outer wall of the barrel is recessed inwardly to form at least one groove, and the first shock absorbing structure covers the entire outer wall of the barrel and fills the Groove. An electronic device comprising the heat dissipation fan according to any one of claims 1 to 7.