CN210565209U - A thin blower cooling fan - Google Patents

Abstract

The utility model provides a thin blower cooling fan, which comprises an outer frame combination, a motor combination, a fan blade combination and a face cover; the center of the face cover is provided with a first air inlet; the face cover is fixed above the outer frame combination; an exhaust port is formed at the side of the combination of the face cover and the outer frame; the outer frame assembly comprises an outer frame and a bearing; the center of the bottom of the outer frame is provided with a bearing mounting hole and a plurality of second air inlets surrounding the periphery of the bearing mounting hole; the bearing is fixed in the bearing mounting hole; the bearing is internally provided with a shaft hole; the inner wall of the shaft hole is provided with a plurality of spiral grooves; the motor combination is sleeved outside the bearing; the fan blade combination is arranged between the face cover and the outer frame combination; the fan blade assembly comprises a heat dissipation piece, an iron shell, a rubber magnet and a shaft core; the iron shell and the rubber magnet are fixed at the bottom of the heat radiating piece and are parallel to the bottom surface of the heat radiating piece, one end of the shaft core is fixed on the iron shell, and the other end of the shaft core is inserted into the shaft hole; embodies the utility model discloses can reduce whole height.

Description

Thin type blower cooling fan

Technical Field

The utility model relates to an air-blower technical field, in particular to slim air-blower radiator fan.

Background

With the development of modern science and technology, the living standard of people is improved, and various electronic devices emerge endlessly and serve the quality life of people. The fan of the blower applied to various small electronic equipment at present has various types, and different equipment has different requirements on the blower, such as the requirement of air volume and air pressure, the requirement of noise and the like. And for example, the more electronic equipment is made, the smaller the electronic equipment is, and the more electronic equipment is made, the smaller the electronic equipment is made, and the electronic equipment is made into a tablet, a mobile phone and the like. Narrow part space also has higher and higher requirements on the cooling fan, and has smaller and smaller requirements on the size of the cooling fan.

In order to meet market demands, fan manufacturers are also continuously reducing the size of products, and the size of the conventional blower fan for heat dissipation is generally 40mm wide and 10mm high, which is common. Because the height of the fan is the height of the fan, the fan can be thinned to 4mm, which is already clear in industry; improvements are therefore needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a slim air-blower radiator fan mentions the problem in order to solve the background art.

In order to achieve the above object, the present invention provides the following technical solutions:

a thin blower cooling fan comprises an outer frame assembly, a motor assembly, a fan blade assembly and a face cover; the center of the face cover is provided with a first air inlet; the face cover is fixed above the outer frame combination; an exhaust port is formed on the side of the combination of the face cover and the outer frame; the outer frame assembly comprises an outer frame and a bearing; the center of the bottom of the outer frame is provided with a bearing mounting hole and a plurality of second air inlets surrounding the periphery of the bearing mounting hole; the bearing is fixed in the bearing mounting hole; the bearing is internally provided with a shaft hole; the inner wall of the shaft hole is provided with a plurality of spiral grooves; the motor combination is sleeved outside the bearing; the fan blade combination is arranged between the face cover and the outer frame combination; the fan blade assembly comprises a heat dissipation piece, an iron shell, a rubber magnet and a shaft core; the heat dissipation piece comprises a mounting shell and a plurality of blades which are uniformly distributed on the outer side of the mounting shell; the bottom of the mounting shell is provided with a mounting groove; a shaft core mounting hole is formed in the center of the iron shell; the iron shell is tightly matched in the mounting groove; the bottom of the iron shell is provided with a containing groove; the glue magnet is tightly matched in the accommodating groove of the bottom shell; the bottoms of the rubber magnet, the iron shell and the heat dissipation piece are flat; the upper end of the shaft core is fixed in the shaft core mounting hole, and the lower end of the shaft core is inserted into the shaft hole.

To the further description of the present invention, the face cover is made of ultra-thin aluminum material.

For further description of the present invention, the motor assembly includes a PCBA plate, a silicon steel sheet and a coil; the bottom of the PCBA plate is provided with a convex column; the bottom of the outer frame is provided with a clearance hole of a clearance convex column; the PCBA plate is sleeved on the bearing and is in contact with the outer frame surface; the silicon steel sheet is sleeved on the bearing and welded on the PCBA board; the coil is mounted on a silicon steel sheet.

The utility model has the advantages that:

integrating the heat dissipation piece, the iron shell, the rubber magnet and the shaft core together to form a component which is a fan blade assembly; then the outer frame and the bearing are integrated together to form an outer frame assembly; then the fan is assembled with a motor to form a fan finished product, so that the superposed height and clearance among all parts are effectively reduced, and the height of the whole structure is reduced; the iron shell, the rubber magnet and the bottom of the heat dissipation part are level, the combined height does not exceed the height of the blade, and the height of the rotor assembly is equal to the height of the blade, so that a foundation is laid for reducing the overall height of the heat dissipation fan; a plurality of spiral grooves are processed in the bearing and used for oil retention, and the spiral grooves replace an oil storage bin in the middle pipe of the outer frame, so that the spiral grooves and the outer frame are integrated by injection molding, the height of the middle pipe can be reduced, and a foundation is laid for reducing the overall height; the shaft core in the design has no snap spring buckling position, and can reduce the assembly space and the gap, thereby further reducing the height. Through the means, the height space of each assembly is reduced in a layering mode, and the assembly space and the assembly gap are reduced, so that the ultra-thin design of the blower fan is achieved.

Drawings

FIG. 1 is an overall structure of the present invention;

fig. 2 is a top view of the present invention;

3 FIG. 33 3 is 3 a 3 block 3 diagram 3 of 3 A 3- 3 A 3 in 3 FIG. 32 3; 3

FIG. 4 is a structural view of the bearing of the present invention;

fig. 5 is an exploded view of the fan blade assembly of the present invention.

Detailed Description

The invention is further explained below with reference to the drawings:

as shown in fig. 1-5, a thin blower heat dissipation fan includes an outer frame 11 assembly 1, a motor assembly 2, a fan assembly 3, and a face cover 4; the center of the face cover 4 is provided with a first air inlet 41; the face cover 4 is fixed above the outer frame 11 assembly 1; an exhaust port 101 is formed at the side of the combination 1 of the face cover 4 and the outer frame 11; the outer frame 11 assembly 1 comprises an outer frame 11 and a bearing 12; the center of the bottom of the outer frame 11 is provided with a bearing mounting hole and a plurality of second air inlets 111 surrounding the periphery of the bearing mounting hole; the bearing 12 is fixed in the bearing mounting hole; the bearing 12 is internally provided with a shaft hole 121; the inner wall of the shaft hole 121 is provided with a plurality of spiral grooves 121; the motor assembly 2 is sleeved outside the bearing 12; the fan blade assembly 3 is arranged between the face cover 4 and the outer frame 11 assembly 1; the fan blade assembly 3 comprises a heat sink 31, an iron shell 32, a rubber magnet 33 and a shaft core 34; the heat sink 31 includes a mounting shell 311 and a plurality of blades 312 uniformly distributed outside the mounting shell 311; the bottom of the mounting shell 311 is provided with a mounting groove 311-1; the center of the iron shell 32 is provided with a shaft core mounting hole 321; the iron shell 32 is tightly matched in the mounting groove 311-1; the bottom of the iron shell 32 is provided with a containing groove 322; the glue magnet 33 is tightly matched in the accommodating groove 322 of the bottom shell; the bottoms of the glue magnet 33, the iron shell 32 and the heat dissipation member 31 are flat; the upper end of the shaft core 34 is fixed in the shaft core mounting hole 321, and the lower end is inserted into the shaft hole 121; the shaft core 34 in the design is free of a clamp spring; the heat sink 31, the iron shell 32, the rubber magnet 33 and the shaft core 34 are riveted into a whole; the bearing 12 is riveted and fixed on the mounting hole of the outer frame 11.

The face cover 4 is made of ultrathin aluminum; replace traditional plastic lid through ultra-thin aluminum product upper cover, reduce the height, increase flabellum heat sink 31 inside operation space.

The motor assembly 2 comprises a PCBA board, a silicon steel sheet and a coil; the bottom of the PCBA plate is provided with a convex column; the bottom of the outer frame 11 is provided with a clearance hole 112 of a clearance convex column; the PCBA plate is sleeved on the bearing 12 and is in surface contact with the outer frame 11; the silicon steel sheet is sleeved on the bearing 12 and welded on the PCBA board; the coil is arranged on the silicon steel sheet; the silicon steel sheet is positioned in the accommodating groove 322; the outer frame 11 is provided with clearance holes 112 to allow the PCBA to be in a convex column position, so that the PCBA can be tightly attached to the bottom surface of the outer frame 11, and the height can be reduced; the whole height of this design can accomplish 3.45 mm.

The working principle of the embodiment is as follows:

the motor assembly 2 drives the shaft core 34 to rotate, the shaft core 34 drives the heat dissipation member 31 to rotate, and the heat dissipation member 31 drives the wind to be sucked from the first air inlet 41 and the second air inlet 111 and to be discharged from the air outlet 101.

The above description is not intended to limit the technical scope of the present invention, and any modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.

Claims (3)

1. A thin blower cooling fan, characterized in that: it comprises an outer frame combination, a motor combination, a fan blade combination and a cover; the center of the cover has a first air inlet; the cover is fixed above the outer frame combination; The side of the combination of the face cover and the outer frame is formed with an exhaust port; the outer frame combination includes an outer frame and a bearing; the center of the bottom of the outer frame is provided with a bearing installation hole and a number of runners surrounding the outer circumference of the bearing installation hole. Two air inlets; the bearing is fixed in the bearing installation hole; the bearing has a shaft hole; the inner wall of the shaft hole is provided with several spiral grooves; the motor combination is sleeved outside the bearing; the fan The blade assembly is arranged between the surface cover and the outer frame assembly; the fan blade assembly includes a heat sink, an iron shell, a plastic magnet and a shaft core; the heat sink includes a mounting shell and several blades evenly distributed on the outside of the mounting shell; The bottom of the mounting shell is provided with a mounting slot; the center of the iron shell is provided with a shaft core mounting hole; the iron shell is tightly fitted in the mounting slot; the bottom of the iron shell is provided with an accommodating slot; The bottom of the rubber magnet, the iron shell and the heat sink are flat; the upper end of the shaft core is fixed in the shaft core installation hole, and the lower end is inserted into the shaft hole. 2 . The thin blower cooling fan according to claim 1 , wherein the surface cover is made of ultra-thin aluminum material. 3 . 3. A thin blower cooling fan according to claim 1, characterized in that: the motor combination comprises a PCBA board, a silicon steel sheet and a coil; the bottom of the PCBA board has a convex column; the bottom of the outer frame is provided with The hollow hole of the hollow convex column; the PCBA board is sleeved on the bearing and is in contact with the outer frame surface; the silicon steel sheet is sleeved on the bearing and welded on the PCBA board; the coil is installed on the silicon steel sheet.

Images