CN2371380Y

CN2371380Y - Radiation fan with double bearings

Info

Publication number: CN2371380Y
Application number: CN 99208892
Authority: CN
Inventors: 刘锦堂
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-29
Filing date: 1999-04-29
Publication date: 2000-03-29
Anticipated expiration: 2009-04-29

Abstract

The utility model relates to a radiation fan with double bearings, which comprises a blade group and a base, wherein the bottom of a blade frame of the blade group is provided with a rotating shaft which vertically extends downwards; the base is provided with a bearing seat, an upper ball bearing and a lower self lubricating bearing are arranged in the bearing seat, a spacing ring is arranged between the two bearings and a buckle ring is buckled with an annular groove of the rotating shaft. A spring is arranged between the blade frame and an inner shaft sleeve of the ball bearing so that the buckle ring can be tightly abutted with the ball bearing, the rotating shaft, the inner shaft sleeve of the ball bearing and the buckle ring can simultaneously rotate, and a baffle ring can position the axial position of the ball bearing, the spacing ring and the self lubricating bearing. The utility model can successfully run under various conditions without noise.

Description

Radiation fan with duplex bearing

The utility model relates to a kind of radiation fan, particularly about a kind of fan with a single ball bearing and oil-impregnated bearing.

Flourish along with the modern science and technology industry, the powerful product of deft design, power is more and more many, but the powerful product of power unavoidablely can produce high temperature in use, and the secret worry when just having formed product and using, the lighter causes element to burn, and the product damage is stopped, and severe patient will cause bigger destruction, so the accurate product of most of design all is provided with a radiation fan, the effect of heat radiation when using to reach product.

The known tool ball bearing and the fan of oil-impregnated bearing, as shown in Figure 1, be on a pedestal 10, to be provided with a bearing support 12, containing groove in it can be for putting two bearings up and down, the bearing of upper end is a ball bearing 14, the bearing of lower end then is an oil-impregnated bearing 16, and installing one spacer ring 18 between ball bearing 14 and oil-impregnated bearing 16, to separate two

bearings

14,16, the running shaft 22 that fan blade 20 central authorities connect is socketed in two

bearings

14,16 centers, the bottom of running shaft 22 is that a scrobicular ring 24 is arranged, and can supply a clasp 26 snappings, so that running shaft 22 is fixed in the pedestal 10.

But above-mentioned fan is in case be inverted when using, as shown in Figure 2, fan blade moves down because of action of gravity, make clasp be tight against oil-impregnated bearing, when fan running, clasp and oil-impregnated bearing constantly rub, and the noise that the people is disturbed in generation, and because friction improperly for a long time causes the fan reduction in working life, so known fan can only turn round in the mode of fan blade in the upper end, the unlikely effectiveness that influences fan itself of, no matter be inverted to use or other all can make clasp and bearing produce the situation of improper friction, fan all can't effectively turn round, and causes the generation of noise and influences fan working life.And running shaft easily skids in the internal axle sleeve of ball bearing when running up, and influences fan running efficient and produce noise.

Main purpose of the present utility model is that a kind of radiation fan with ball bearing and oil-impregnated bearing that all can turn round smoothly under various situations is being provided, and can not produce noise when making its running, more can not reduce working life.

In order to achieve the above object, a kind of radiation fan of the utility model with duplex bearing, comprise a flabellum group and a pedestal, this flabellum group mainly is made up of a flabellum framework and several fan blade of being connected to this flabellum framework outer rim, wherein, the centre of this flabellum framework bottom is provided with a running shaft that extends vertically downward; This pedestal is combined by the ball bearing and the oil-impregnated bearing that are arranged above and below in a bearing support and the interior set containing groove thereof, and this rotary sleeve is connected in this two bearing; Be equiped with a spacer ring between this ball bearing and this oil-impregnated bearing and separate this two bearing, it is characterized in that: the appropriate position on this running shaft is provided with an annular groove, one clasp snaps onto this groove on this running shaft, one spring connects the internal axle sleeve of this flabellum framework and ball bearing, make this clasp be tight against the internal axle sleeve of this ball bearing, utilize this clasp and this ball bearing of this spring handle to be fixed on this running shaft, other has a baffle ring to be installed in the top of containing groove, fixes the axial position of this ball bearing, spacer ring and oil-impregnated bearing.

This spacer ring is formed by a rubber material.This spring is a pressure spring.

After adopting above-mentioned structure of the present utility model, can make radiation fan under various situations, as being inverted or being sidelong etc., all can turn round smoothly, and rotate simultaneously because clasp is a internal axle sleeve with ball bearing, make it not produce friction and noise, and guarantee the life-span that fan uses.

Below illustrate in detail by the specific embodiment conjunction with figs., make the effect that is easier to understand the purpose of this utility model, technology contents, characteristics and is reached.

The simple declaration of accompanying drawing:

Fig. 1: be known fan sectional view;

Fig. 2: be another embodiment of known fan;

Fig. 3: be sectional view of the present utility model.

Be illustrated in figure 3 as sectional view of the present utility model, formed by a flabellum group 28 and a pedestal 30.One flabellum group 28 comprises a flabellum framework 32, and the outer rim around flabellum framework 32 is connected with several fan blade 34, wherein, the centre of flabellum framework 32 bottoms is provided with a running shaft 36 that extends vertically downward, forms an annular groove 38 in the appropriate position of running shaft 36.

One pedestal 10, combined with oil-impregnated bearing 44 by a bearing support 40 and interior ball bearing 42 thereof, bearing support 40 central interior are provided with a containing groove, for putting two bearings up and down, upper bearing (metal) is to be ball bearing 42, and lower bearing is an oil-impregnated bearing 44, and installs a spacer ring 46 between ball bearing 42 and oil-impregnated bearing 44, it is made up of the rubber material, to separate ball bearing 42 and oil-impregnated bearing 44.

The running shaft 36 of flabellum group 28 can be socketed in ball bearing 42, spacer ring 46 and the oil-impregnated bearing 44 in regular turn, make running shaft 36 and two

bearings

42,44 have excellent contact, at this moment, annular groove 38 on the running shaft 36 just can supply a clasp 50 snappings, running shaft 36 is fixed in the

bearing

42,44 of pedestal 30.

Flabellum framework 32 is that mat one pressure spring 52 is connected with the internal axle sleeve of ball bearing 42, pressure spring 52 is to be socketed in running shaft 36 outsides, make above-mentioned clasp 50 be tight against the internal axle sleeve of ball bearing 42, by clasp 50 and pressure spring 52 internal axle sleeve of ball bearing 42 is fixed on the running shaft 36, then ball bearing 42 does not move up and down.Other has a baffle ring 48 to be installed in the top of containing groove, with the fixing axial position of ball bearing 42, spacer ring 46 and oil-impregnated bearing 44, it is not moved up and down.And the power that is provided by pedestal 30, making running shaft 36 drive fan blade 34 rotates, and then reach the purpose of heat radiation, simultaneously, the internal axle sleeve of ball bearing 42 is because of the effect of pressure spring 52 and clasp 50, the phenomenon that the three can not skidded with running shaft 36 high speed rotating, so can not produce friction and noise improperly with ball bearing 42, this is a main feature of the present utility model.

Another characteristics of the present utility model are by the fixing axial position of ball bearing, spacer ring and the oil-impregnated bearing of containing groove of baffle ring, it can not be moved up and down, pressure spring and clasp then are fixed on running shaft to ball bearing and whether go up move down, make radiation fan under various situations, as being inverted or being sidelong etc., all can turn round smoothly, and because clasp is a internal axle sleeve with ball bearing rotates simultaneously, make it not produce friction and noise, and guarantee the life-span that fan uses.

The above embodiment only is for technology contents of the present utility model and characteristics are described, its purpose makes the personage who is familiar with radiation fan can understand content of the present utility model and is implementing according to this, when can not with qualification practical range of the present utility model, promptly the equalization of doing according to the structure characteristic of technical solutions of the utility model announcement generally changes or modifies, and must be encompassed in the technical solution of the utility model scope.

Claims

1, a kind of radiation fan with duplex bearing, comprise a flabellum group and a pedestal, this flabellum group mainly is made up of a flabellum framework and several fan blade of being connected to this flabellum framework outer rim, and wherein, the centre of this flabellum framework bottom is provided with a running shaft that extends vertically downward; This pedestal is combined by the ball bearing and the oil-impregnated bearing that are arranged above and below in a bearing support and the interior set containing groove thereof, and this rotary sleeve is connected in this two bearing; Be equiped with a spacer ring between this ball bearing and this oil-impregnated bearing and separate this two bearing, it is characterized in that: the appropriate position on this running shaft is provided with an annular groove, one clasp snaps onto this groove on this running shaft, one spring connects the internal axle sleeve of this flabellum framework and ball bearing, make this clasp be tight against the internal axle sleeve of this ball bearing, utilize this clasp and this ball bearing of this spring handle to be fixed on this running shaft, other has a baffle ring to be installed in the top of containing groove, fixes the axial position of this ball bearing, spacer ring and oil-impregnated bearing.

2, radiation fan as claimed in claim 1 is characterized in that: this spacer ring is formed by a rubber material.

3, radiation fan as claimed in claim 1 is characterized in that: this spring is a pressure spring.