TWI541441B - Fan vibration damping structure and fan with the vibration damping structure - Google Patents

Description

Fan damping structure and fan with shock absorbing structure

A fan damping structure and a fan having a shock absorbing structure, in particular, a fan damping structure capable of reducing vibration generated when the fan is running, and a fan having the shock absorbing structure.

The cooling fan is a heat-dissipating unit with good heat dissipation efficiency and high elasticity combined with other heat-dissipating components. The cooling fan is widely used in various places where heat is needed, whether it is a vehicle, a home appliance, or an air-conditioning device. Antipyretic application.

The cooling fan is configured to generate relative rotation by inductive excitation between a rotor and a stator, and then the blade blades on the rotor rotate to forcibly guide the airflow to dissipate heat. The cooling fan is further divided into an axial fan and a cross flow fan. Centrifugal fans, etc., and the most commonly used axial flow fans in current electronic equipment forcibly dissipating heat from various heat-generating units or electronic components, so as to achieve the purpose of heat-dissipation, while the cooling fan is in operation, it will inevitably generate some vibration and affect the electronic equipment. All the more sophisticated electronic units operate, such as hard drives, and no matter what kind of cooling fan is running, it will generate vibration. In some specific environments, some vibrations are not allowed, so how to eliminate the fan vibration For the current most need to improve the issue.

Accordingly, in order to effectively solve the above problems, the main object of the present invention is to provide a fan shock absorbing structure that can reduce the vibration phenomenon generated when the fan is in operation.

Another object of the present invention is to provide a fan having a shock absorbing structure.

In order to achieve the above object, the present invention provides a fan damping structure, comprising: a shaft cylinder, a first bearing, a second bearing, a third bearing, an elastic component and at least one oil seal and a high viscosity coefficient grease ;

The shaft cylinder has an accommodating space and a shaft hole and communicates with each other. The first bearing, the second and third bearings and an elastic component and the oil seal are accommodated therein, and the accommodating space is filled with the high viscosity. Hysteresis coefficient grease.

In order to achieve the above object, the present invention provides a fan having a shock absorbing structure, the fan having a shock absorbing structure comprising: a shaft cylinder, a first bearing, a second bearing, a third bearing, and an elastic Component and at least one oil seal with high viscosity coefficient grease, a rotor, a stator;

The shaft cylinder has an accommodating space and a shaft hole and communicates with each other. The first bearing, the second and third bearings and an elastic component and the oil seal are accommodated therein, and the accommodating space is filled with the high viscosity. Hysteresis coefficient grease.

The rotor has a fan fan hub, and the fan fan hub is provided with a mandrel, and the mandrel is pivoted with the first, second and third bearings; the stator is sleeved outside the shaft.

The invention is characterized in that the accommodating space inside the shaft cylinder and the high-viscosity oil are filled between the bearing and the elastic member, that is, the vibration thrust of the axial direction of the fan can be oscillated by the elastic member, and the permeable container can be accommodated. The application of a high viscosity coefficient grease filled in the space produces a similar damping damping effect, thereby achieving the effect of damping.

1‧‧‧Fan shock absorption structure

11‧‧‧ shaft tube

111‧‧‧ accommodating space

112‧‧‧Axis hole

113‧‧ ‧ blocking

12‧‧‧First bearing

13‧‧‧second bearing

14‧‧‧ Third bearing

15‧‧‧Flexible components

16‧‧‧ oil seal

17‧‧‧High viscosity coefficient grease

18‧‧‧ Positioning components

2‧‧‧Fan with damping structure

21‧‧‧Rotor

211‧‧‧Fan fan impeller hub

212‧‧‧ mandrel

22‧‧‧ Stator

221‧‧‧ steel sheet

222‧‧‧ coil

1 is an exploded sectional view showing a first embodiment of a fan damping structure of the present invention; FIG. 2 is a sectional view showing a first embodiment of the fan damping structure of the present invention; An exploded cross-sectional view of a first embodiment of a fan having a shock absorbing structure; and a fourth sectional view of a first embodiment of a fan having a shock absorbing structure of the present invention.

The above object of the present invention, as well as its structural and functional features, will be described in accordance with the preferred embodiments of the drawings.

1 and 2 are an exploded cross-sectional view and a combined cross-sectional view of a first embodiment of the fan absorbing structure of the present invention. As shown, the fan damper structure 1 includes a shaft barrel 11, a first bearing 12, a second bearing 13, a third bearing 14, an elastic element 15 and at least one The oil seal 16 and the high viscosity coefficient grease 17 and the positioning component 18; the shaft cylinder 11 has an accommodating space 111 and a shaft hole 112, and the shaft hole 112 communicates with the accommodating space 111, and the first bearing The second and third bearings 13, 14 and the elastic member 15 and the oil seal 16 are accommodated therein, and the accommodating space 111 is filled with the high viscosity coefficient grease 17. In the accommodating space 111 of the shaft cylinder 11, a blocking portion 113 is protruded in the radial direction. The blocking portion 113 has an axial limiting function, and the first bearing 13 side abuts against the blocking portion 113.

The first and second bearings 12 and 13 are respectively disposed at two ends of the accommodating space 111, and the oil seal 16 is disposed between the first bearing 12 and the third bearing 14, that is, the housing in the shaft cylinder 11. The space 111 is sequentially disposed from the bottom to the top as the second bearing 13, the elastic member 15, the positioning member 18, the third bearing 14, the oil seal 16, and the first bearing 12. The first and third bearings 12, 14 are respectively disposed on The two sides of the blocking portion 113 and the high viscosity coefficient grease 17 are filled between the third bearing 14 and the second bearing 13.

In the embodiment, the first and second bearings 12 and 13 are ball bearings, and the third bearing 14 is an oil-impregnated bearing. Of course, all of the ball bearings or oil-impregnated bearings or combinations thereof are not limited. .

A positioning member 18 is further disposed between the third bearing 14 and the elastic member 15. The positioning member 18 is disposed between the third bearing 14 and the elastic member 15, and the positioning member 18 is a positioning ring. The elastic member 15 is a compression spring.

Referring to Figures 3 and 4, there is shown an exploded cross-sectional view and a combined cross-sectional view of a first embodiment of a fan having a shock absorbing structure according to the present invention. As shown, the fan 2 having a shock absorbing structure includes: a shaft cylinder 11, a rotor 21, and a stator 22; the structure of the shaft cylinder 11 is the same as that disclosed in the first embodiment of the fan damping structure 1, and therefore will not be described herein, and please Referring to the description of the first embodiment of the fan damper structure 1 and the first and second figures of the drawings, the difference between the embodiment and the foregoing embodiment is that the fan 2 having the fan absorbing structure is disclosed in the embodiment. The stator 22 is sleeved on the outside of the shaft cylinder 11. The rotor 21 has a fan-fan hub 211, and the fan-fan hub 211 defines a spindle 212. The spindle 212 is the first one. The second and third bearings 12, 13, and 14 are pivoted; the stator 22 is composed of a plurality of silicon steel sheets 221, and a plurality of coils 222 are externally wound.

The present invention is for improving the shock absorption of the conventional technology by the elastic member 15 only when the fan is operated, and is more damped and damped by the high viscosity coefficient grease 17 filled in the accommodating space of the shaft barrel 11. The concept of the damping of the shock absorber is applied to the inside of the shaft barrel of the fan for shock absorption, and the high viscosity coefficient grease is used to slow down the vibration and form a fan to perform axial buffering and radial vibration suppression.

1‧‧‧Fan shock absorption structure

11‧‧‧ shaft tube

111‧‧‧ accommodating space

112‧‧‧Axis hole

113‧‧ ‧ blocking

12‧‧‧First bearing

13‧‧‧second bearing

14‧‧‧ Third bearing

15‧‧‧Flexible components

16‧‧‧ oil seal

17‧‧‧High viscosity coefficient grease

18‧‧‧ Positioning components

Claims (7)

A fan damper structure includes: a shaft cylinder having a shaft hole and an accommodating space and communicating with each other, wherein the accommodating space is provided with a first bearing and a second bearing, and the one and the second bearing The bearing has a third bearing and an elastic component and at least one oil seal and is filled with a high viscosity coefficient grease, and the third bearing and the elastic component further have a positioning component, and the first and second bearing systems respectively The oil seal is disposed at the two ends of the accommodating space, and the oil seal is disposed between the first bearing and the third bearing, and the positioning component is disposed between the third bearing and the elastic component, the high viscosity coefficient grease Filled between the third bearing and the second bearing. The fan shock absorbing structure according to claim 1, wherein the first and second bearings are ball bearings, and the third bearing is an oil bearing. The fan shock absorbing structure of claim 1, wherein the positioning component is a positioning ring. The fan damper structure of claim 1, wherein the accommodating space of the barrel protrudes in a radial direction, and the first bearing side abuts against the dam. A fan having a fan absorbing structure includes: a shaft barrel having an accommodating space therein, wherein the accommodating space is provided with a first bearing and a second bearing, and the first and second bearing rooms are The utility model has a third bearing and an elastic component and at least one oil seal and is filled with a high viscosity coefficient grease, wherein the third bearing and the elastic component further have a positioning component, wherein the first and second bearing systems are respectively disposed on The oil seal is disposed at the two ends of the space, and the oil seal is disposed between the first bearing and the third bearing, the positioning component is disposed between the third bearing and the elastic component, and the high viscosity coefficient grease is filled a third bearing to the second bearing; a rotor having a fan fan hub, and the fan fan hub is provided with a mandrel, the mandrel and the first, second and third bearings are pivoted; The sleeve is sleeved outside the aforementioned shaft. The fan having a fan damping structure according to claim 5, wherein the first and second bearings are ball bearings, and the third bearing is an oil bearing. A fan having a fan damping structure as described in claim 5, wherein The positioning element is a positioning ring.