CN2535586Y

CN2535586Y - Improved structure of radiating fan

Info

Publication number: CN2535586Y
Application number: CN 01278586
Authority: CN
Inventors: 施博仁; 吕岱颖
Original assignee: DINGPEI Co Ltd
Current assignee: DINGPEI Co Ltd
Priority date: 2001-12-29
Filing date: 2001-12-29
Publication date: 2003-02-12
Anticipated expiration: 2011-12-29

Abstract

The utility model relates to an improved structure of a thermal fan, which comprises a fan vane, a coil assembly, a circuit board and a bottom plate, wherein the fan vane is provided with an axial center and jacketed to the coil assembly by the axial center, the coil assembly is provided with a ball bearing and an oilness bearing which are up and down overlapped, and an O-shaped ring and a C-shaped buckle support the axial center at the upper and lower sides of the two bearings. The utility model is characterized in that the bottom plate is provided with a magnetic device corresponding to the bottom of the axial center and absorbs the axial center by the magnetic device to realize that the fan vane is absorbed to a fixed position, and thereby the whole height is not affected no matter the thermal fan is right-side up, placed on one side or inverted, a preliminary pressure can be exerted on the ball bearing to make balls in the ball bearing operate in the same rail. Besides, because the axial is absorbed by the magnetic device, a gap is arranged between the C-shaped buckle of the axial center and the oilness bearing, the C-shaped buckle and the axial center do not directly contact each other, which remarkably prolongs the service life of the thermal fan and alleviates noise generated by friction.

Description

The structure-improved of radiation fan

Technical field

The utility model relates to a kind of structure-improved of radiation fan, refer in particular to and a kind ofly in this radiation fan, be provided with magnetic devices, by this magnetic devices to hold the axle center, no matter make radiation fan is just to put, be sidelong or the neither meeting of putting upside down has influence on its whole height, and can produce a precompression to ball bearing, ball in the ball bearing can be turned round in same track, and make unlikely direct contact friction between C type clasp on the axle center and the oil-impregnated bearing, the noise that is produced with life-span of significantly increasing radiation fan and when eliminating friction.

Background technique

Traditional radiation fan 20, please refer to illustrated in figures 1 and 2, it comprises a flabellum 7, this flabellum 7 has a containing space 71, and be extended with an axle center 72 downward vertically in the neutral position of this containing space 71, one coil groups 8 is installed in the containing space 71, and axle center 72 is socketed in the coil groups 8, just to be produced by this coil groups 8, negative polarity changes, make axle center 72 rotate and drive flabellum 7 and follow rotation, this coil groups 8 includes an iron-clad 81, it is installed in the containing space 71, is arranged with a magnet 82 in iron-clad 8, and the line wheel carrier 84 of winding around 83 is arranged in magnet 82 installed inside, in addition, in the online wheel carrier 84 axle sleeve 85 that a copper material is constituted is installed, folded respectively up and down ball bearing 86 and the oil-impregnated bearing 87 of being provided with in this axle sleeve 85 is against living by 88 on O type ring in the upside of ball bearing 86, downside place at oil-impregnated bearing 87 is then fastened by a C type clasp 89, axle sleeve 85 bottoms and be fixedly arranged on a circuit board 201 and a base plate 202 on.

But, when in the containing space 71 that coil groups 8 is installed in flabellum 7, can have certain clearance between this iron-clad 81 and the flabellum 7, that is this flabellum 7 can have the stroke that moves up and down because of the gap, so, if can have influence on the whole height of radiation fan 20 when radiation fan 20 just put, is sidelong or putting upside down because of the relation in this gap; Moreover this ball bearing 86 can make the ball in the ball bearing 86 move in same track, and reduce its life-span, and can produce noise because of there not being any precompression; In addition, this C type clasp 89 that is set on the axle center 72 also might be because of the inversion of radiation fan 20, and it is contacted with oil-impregnated bearing 87, cause axle center 72 when rotating, 89 meetings of C type clasp and 87 of oil-impregnated bearings produce rubbing contact, and influence life-span of entire heat dissipation fan 20, even produce noise because of rubbing contact.

Summary of the invention

The purpose of this utility model is to propose a kind of structure-improved of the radiation fan of being made up of flabellum, coil groups and magnetic devices, puts, is sidelong or put upside down no matter it just has, and can not influence its whole height; And characteristics such as increase the service life and abate the noise, thereby solved the existing in prior technology problem.

Technological scheme that the utility model adopts is that it includes:

One flabellum, it is extended with an axle center downward vertically;

One coil groups, it is installed in the flabellum, and axes sleeve is connected in the coil groups, and this coil groups includes an iron-clad, it is installed in the containing space, in iron-clad, be arranged with a magnet, the line wheel carrier of winding around then be installed, in addition in magnet, one axle sleeve is installed in the online wheel carrier, this axle sleeve is folded up and down respectively to be provided with ball bearing and oil-impregnated bearing, be fastened on the axle center by O type ring and C type clasp respectively in the upper and lower sides place of ball bearing, this axle sleeve bottom and be fixedly arranged on a circuit board and a base plate on.

One magnetic devices, it be installed in the end anti-on, and corresponding to the bottom, axle center, to hold the axle center.

Advantage of the present utility model is:

(1) after this radiation fan 10 installs, its flabellum 1 is not to be fixed together closely with coil groups 2, it has certain clearance can be slightly mobile up and down, because this magnetic devices 5 can hold axle center 12, and it is solid on a fixed position that flabellum 1 is inhaled, so, no matter radiation fan 10 is just to put, be sidelong or put upside down neitherly can influence its whole height.

(2) moreover, because of magnetic devices 5 is to hold axle center 12, make magnetic devices 5 produce a precompression to ball bearing 26, make the balls in the ball bearing 26 on same track, move, and can increase the life-span and reduce noise.

(3) in addition,, slightly has the gap and unlikely direct contact friction between C type clasp 29 on the axle center 12 and the oil-impregnated bearing 27, so that the noise that is produced can significantly increase the life-span of radiation fan 10 and eliminate friction the time and make because of magnetic devices 5 is to hold axle center 12.

Description of drawings

Fig. 1 is the decomposing schematic representation of known technology;

Fig. 2 is the combination section of known technology;

Fig. 3 is a decomposing schematic representation of the present utility model;

Fig. 4 is a combination section of the present utility model.

Embodiment

Further specify preferred embodiment of the present utility model in conjunction with above-mentioned each accompanying drawing now.

The utility model is a kind of radiation fan structure-improved, please refer to Fig. 3 and shown in Figure 4, this radiation fan 10 includes a flabellum 1, flabellum 1 has a containing space 11, neutral position at this containing space 11 is extended with axle center 12 downward vertically, one coil groups 2 is installed in this containing space 11, and axle center 12 is socketed in the coil groups 2, just to be produced by this coil groups 2, negative polarity changes, make axle center 12 rotate and drive flabellum 1 and follow rotation, this coil groups 2 includes an iron-clad 21, it is installed in the containing space 11, in iron-clad 21, be arranged with a magnet 22, and be wound with the line wheel carrier 24 of coil 23, so that just produce via the effect of this magnet 22 and coil 23 in magnet 22 installed inside, the variation of negative polarity;

In addition, in the online wheel carrier 24 axle sleeve 25 that a copper material is constituted is installed, folded up and down respectively ball bearing 26 and the oil-impregnated bearing 27 of being provided with in this axle sleeve 25, at the upside of ball bearing 26 by 28 on O type ring against living, downside place at oil-impregnated bearing 27 is then fastened by a C type clasp 29, ball bearing 26 and oil-impregnated bearing 27 are fixed in the axle sleeve 25, these axle sleeve 25 bottoms and be fixedly arranged on a circuit board 3 and a base plate 4 on.

The utility model is characterised in that: the position that corresponds to 12 bottoms, axle center on this base plate 4 is provided with magnetic devices 5, and it includes a magnet 51 and a magnetic conductive disk 52.

Please continue with reference to shown in Figure 4, during the utility model assembling, even this iron-clad 21 is installed in the containing space 11 of flabellum 1, again magnet 22 is set in the iron-clad 21, and the line wheel carrier 24 that is wound with coil 23 is installed in the magnet 22, so that make magnet 22 and coil 23 generation effects, the heir places ball bearing 26 and oil-impregnated bearing 27 in the

axle sleeve

25,25 on axle sleeve is placed in the line wheel carrier 24 again, and ball bearing 26 and oil-impregnated bearing 27 are fixed on the axle center 12 by O type ring 28 and C type clasp 29, the magnet 51 and the magnetic conductive disk 52 of magnetic devices 5 then are installed in base plate 4, and corresponding to 12 bottoms, axle center, this can roughly finish the installation of a radiation fan 10.

Above-described, be preferred embodiment of the present utility model only, be not to be used for limiting the scope that the utility model is implemented.Be that all equivalences of being done according to the utility model claims scope change and modification, be all the utility model claims protection domain and contain.

Claims

1. the structure-improved of a radiation fan is characterized in that it comprises:

One flabellum, it is extended with an axle center downward vertically;

One coil groups, it is installed in the flabellum, and axes sleeve is connected in the coil groups, and this coil groups includes an iron-clad, it is installed in the containing space, in iron-clad, be arranged with a magnet, the line wheel carrier of winding around then be installed, in addition in magnet, one axle sleeve is installed in the online wheel carrier, this axle sleeve is folded up and down respectively to be provided with ball bearing and oil-impregnated bearing, be fastened on the axle center by O type ring and C type clasp respectively in the upper and lower sides place of ball bearing, this axle sleeve bottom and be fixedly arranged on a circuit board and a base plate on;

2. the structure-improved of radiation fan as claimed in claim 1 is characterized in that described flabellum, and it has a containing space, be extended with an axle center downward vertically in the neutral position of containing space, and a coil groups is installed in this containing space.

3. the structure-improved of radiation fan as claimed in claim 1 is characterized in that described magnetic devices, and it includes a magnet and a magnetic conductive disk.