CN211343499U

CN211343499U - Lower sheet fixing structure of heat dissipation fan

Info

Publication number: CN211343499U
Application number: CN201921874112.4U
Authority: CN
Inventors: 孙东林
Original assignee: Changzhou Weima Electronic Technology Co ltd
Current assignee: Changzhou Weima Electronic Technology Co ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-08-25
Anticipated expiration: 2029-11-01

Abstract

The utility model relates to a radiator fan device field especially relates to fixed structure of thin slice under radiator fan. The fan blade mounting structure comprises a fan blade shell, a plastic frame and a mounting space between the fan blade shell and the plastic frame; the shaft center and the bearing assembly are arranged in the mounting space and penetrated by the shaft center; the top end of the axle center comprises an upper insertion end which can be inserted into a positioning groove of the fan blade shell, and the lower end of the axle center is provided with a lower insertion end; the bearing assembly comprises a bearing and a middle pipe which are sleeved outside the axis in sequence; the upper part of the middle pipe is provided with a first step, and the lower part of the middle pipe is provided with a second step; the bearing is sleeved on the axis between the first step and the second step; a lower sheet is sleeved on the axis between the second step and the bearing; the surface of the axis is not easy to scratch, and the fixed structure of the lower sheet of the cooling fan has larger oil storage space.

Description

Lower sheet fixing structure of heat dissipation fan

Technical Field

The utility model relates to a radiator fan device field especially relates to fixed structure of thin slice under radiator fan.

Background

At present, the heat radiation fan is designed by the sheet-forming type retaining ring, but the inner diameter of the upper sheet is smaller than that of the shaft center, so that when the shaft center is inserted into the inner diameter of the upper sheet during installation, the outer surface of the shaft center is damaged, and the service life of the heat radiation fan is influenced; in addition, the upper sheet is arranged at the upper end of the bearing, so that a larger space is arranged below the upper sheet, and the problems of leakage and the like of oil storage below the upper sheet can occur in the rotating process of the impeller.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a be difficult for scraping colored axle center surface, and have the fixed structure of thin slice under the radiator fan in great oil storage space.

The technical scheme of the utility model as follows:

the lower sheet fixed structure of the cooling fan comprises a fan blade shell, a plastic frame and an installation space between the fan blade shell and the plastic frame; the shaft center and the bearing assembly are arranged in the mounting space and penetrated by the shaft center; the fan blade shell positioning groove structure is characterized in that the top end of the axis comprises an upper insertion end which can be inserted into a fan blade shell positioning groove, and the lower end of the axis is provided with a lower insertion end; the bearing assembly comprises a bearing and a middle pipe which are sleeved outside the axis in sequence; the upper part of the middle pipe is provided with a first step, and the lower part of the middle pipe is provided with a second step; the bearing is sleeved on the axis between the first step and the second step; and a lower sheet is sleeved on the axis between the second step and the bearing.

The lower insertion end comprises an insertion rod connected with the axis main body and a plug arranged at the bottom end of the insertion rod; the plug is arc-shaped.

The bottom end of the middle pipe is provided with a gasket.

The bearing top is equipped with the copper ring, and this copper ring erects on first step.

The stator is sleeved outside the middle pipe; and magnets are arranged on the fan blade shell outside the stator, and the bottom end of the stator is connected with a PCBA plate.

The utility model has the advantages that: 1. the contact length of the axis and the sheet when the fan blade shell enters the central structure is shortened, so that the hidden troubles of surface scratch of the axis, sheet deformation and the like are reduced;

2. the utility model has partial structure space at the lowest end, and can be used as an oil storage structure, so that oil inside the structure is not easy to permeate upwards, thereby generating the function of oil leakage and reducing the abnormity caused by oil loss;

3. the sizes of the bearing and the gasket of the utility model are reduced, so the cost of parts is reduced;

4. the lower sheet design also has a fastening function.

Drawings

The foregoing and other objects, features, and advantages of the invention will be apparent from the following detailed description taken in conjunction with the accompanying drawings.

Wherein: FIG. 1 is a schematic structural view of the present invention;

in the drawing, 1 is a fan blade shell, 2 is a plastic frame, 3 is an installation space, 4 is an axis, 5 is a positioning groove, 6 is a bearing, 7 is a middle pipe, 8 is a first step, 9 is a second step, 10 is a lower sheet, 11 is an insertion rod, 12 is a plug, 13 is a gasket, 14 is a copper ring, 15 is a stator, 16 is a magnet, 17 is a PCBA plate, and 18 is an upper cover.

Detailed Description

Referring to fig. 1, a lower sheet fixed structure of a cooling fan includes a fan blade housing 1, a plastic frame 2, and an installation space 3 between the fan blade housing and the plastic frame; a shaft center 4 arranged in the installation space and a bearing assembly penetrated by the shaft center; the fan blade axis top end comprises an upper insertion end which can be inserted into a fan blade shell positioning groove 5, and the lower end of the axis is provided with a lower insertion end; the bearing assembly comprises a bearing 6 and a middle pipe 7 which are sleeved outside the axis in sequence; a first step 8 is arranged at the upper part of the middle pipe, and a second step is arranged at the lower part of the middle pipe; the bearing is sleeved on the axis between the first step and the second step; and a lower sheet 10 is sleeved on the axis between the second step and the bearing. Because the structure of the lower sheet is adopted to avoid the original design of the upper sheet, the abrasion of the surface of the shaft center can be effectively reduced; and because the lower sheet is adopted, the middle pipe below the lower sheet forms an oil storage space, and oil leakage is not easy to occur.

The lower insertion end comprises an insertion rod 11 connected with the axis main body and a plug 12 arranged at the bottom end of the insertion rod; the plug is arc-shaped. The arc-shaped plug is easy to be inserted with a thin sheet and convenient to install.

The bottom end of the middle pipe is provided with a gasket 13. Through setting up the gasket, the gasket uses with the plug cooperation, can effectively prolong axle center life.

The top end of the bearing is provided with a copper ring 14 which is arranged on the first step. The copper ring is arranged to fix the position of the inner framework part.

The stator 15 is sleeved outside the middle pipe; and a magnet 16 is arranged on the fan blade shell outside the stator, and the bottom end of the stator is connected with a PCBA (printed circuit board assembly) 17. The magnet produces magnetic field and makes stator and rotor cooperation drive flabellum rotatory, through setting up PCBA board in order to be regarded as circuit board drive circuit.

An upper cover 18 is arranged on the end part of the bent end of the plastic frame. The impeller on the fan blade shell is protected by arranging the upper cover.

The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the techniques of the present invention are substantially any simple modification and equivalent changes to the above embodiments, all falling within the protection scope of the present invention.

Claims

1. The fixed structure of the lower sheet of the cooling fan is characterized by comprising a fan blade shell, a plastic frame and an installation space between the fan blade shell and the plastic frame; the shaft center and the bearing assembly are arranged in the mounting space and penetrated by the shaft center; the top end of the axle center comprises an upper insertion end which can be inserted into a positioning groove of the fan blade shell, and the lower end of the axle center is provided with a lower insertion end; the bearing assembly comprises a bearing and a middle pipe which are sleeved outside the axis in sequence; the upper part of the middle pipe is provided with a first step, and the lower part of the middle pipe is provided with a second step; the bearing is sleeved on the axis between the first step and the second step; and a lower sheet is sleeved on the axis between the second step and the bearing.

2. The fixed structure of the lower fin of the heat dissipating fan as claimed in claim 1, wherein the lower insertion end includes an insertion rod connected to the axial main body and a plug provided at a bottom end of the insertion rod; the plug is arc-shaped.

3. The fixed structure of the bottom fin of the heat dissipating fan as claimed in claim 1, wherein a gasket is provided at a bottom end of the middle tube.

4. The fixed structure of the bottom fin of the heat dissipating fan as claimed in claim 1, wherein the bearing has a copper ring at the top end thereof, and the copper ring is mounted on the first step.

5. The fixed structure of the lower fin of the heat dissipating fan as claimed in claim 1, wherein the middle tube housing is provided with a stator; and magnets are arranged on the fan blade shell outside the stator, and the bottom end of the stator is connected with a PCBA plate.