CN2371379Y

CN2371379Y - Fan with double bearings

Info

Publication number: CN2371379Y
Application number: CN 99208890
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 provides a fan with double bearing, which comprises a blade group, and the bottom center point of a blade frame of the blade group is provided with a rotating shaft which vertically and downwards extends. The utility model also comprises a base which is orderly composed of a top and a bottom bearings and a bearing seat from inside to outside, and the bearing seat is shaped by a single side mould core. A bearing containing slot is provided with the same shaft core and shaft diameter, the two bearings can be simultaneously arranged in the bearing containing slot from the same direction, a spacing ring is arranged between the two bearings so as to separate the two bearings, and the rotating shaft can be precisely sheathed in the bearings. The utility model can cause the rotating shaft to successfully rotate in the bearings and can avoid noise generation.

Description

The fan of tool duplex bearing

The utility model relates to a kind of radiation fan, particularly about a kind of fan with two ball bearings.

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.

Known two ball bearing fans, as shown in Figure 1, be on a pedestal 10, to be provided with a bearing support 12, containing groove 14 in it can be for putting two bearings 16 up and down, bearing support 12 central interior are provided with a ring-shaped protrusion 18, with interval two bearings 16, two bearings 16 must be packed into from different direction, the running shaft 22 that fan blade 20 central authorities connect is socketed in two bearings, 16 centers, can see through the power that pedestal 10 provided and driven rotary axle 22 rotates, and then make fan blade 20 rotation output flowing gas.

Put the containing groove 14 of bearing 16 in the bearing support 12 up and down, be to penetrate one-body molded with mould, has suitable space to hold bearing 16, but containing groove 14 is with public affairs up and down, the moulding that crashes of each core rod on the master tooling, two core rods must be aligned with each other, so need quite high precision, but often cause two containing grooves 14 in the non-position that aligns because of machine error or other factors, so when two bearings 16 are put into containing groove 14 respectively, on aiming at, center line produces deviation, cause running shaft 22 to be inserted among two bearings 16, each produces the radially strength to bearing 16, shown in the upper bearing (metal) of Fig. 1, bear radial force improperly because of the error of bearing 16 positions, make it produce friction improperly, so can produce the noise of disturbing the people in use, and cause the fan damage easily, and shorten the working life of fan, more can't effectively reach radiating effect.

Main purpose of the present utility model is to provide a kind of running shaft and bearing aligning degree good for solving above-mentioned puzzlement, and the fan that can rotate smoothly and increase the service life is to avoid the generation of noise.

Another purpose of the present utility model is that a kind of assembling bearing fan easily and fast is being provided.

For this reason, the fan of a kind of tool duplex bearing of the utility model, comprise: a flabellum group and a pedestal, the 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; Pedestal is to be combined from inside to outside in regular turn by two metal (uppers and bearing support, and this rotary sleeve is connected in this bearing; It is characterized in that: two bearings are placed in the interior same containing groove of this bearing support simultaneously up and down, and this containing groove is to have the identical axle center and the diameter of axle.

Be provided with a spacer ring between two bearings up and down.This spacer ring is formed by a rubber material.

This shows, the utility model its be can from same direction pack into two bearings and between two bearings the installing one spacer ring, to separate two bearings, the set running shaft of one flabellum group central authorities can be socketed in bearing and the spacer ring easily, fan blade can be rotated smoothly along with running shaft, can not produce noise simultaneously.

Below illustrate in detail by a specific embodiment conjunction with figs. so that 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 two ball bearing fan sectional views;

Fig. 2: be sectional view of the present utility model.

Be illustrated in figure 2 as sectional view of the present utility model, formed by a flabellum group 24 and a pedestal 26.One flabellum group 24 comprises a flabellum framework 28, and is connected with several fan blade 30 in the outer rim of flabellum framework 28, and wherein, the centre of flabellum framework 28 bottoms is provided with a running shaft 32 that extends vertically downward.

One pedestal 26, combined by two metal (

uppers

34,36 and bearing support 38 in regular turn from the inside to the outside, bearing support 38 central authorities are provided with a containing groove 40, for putting two bearings, be to be the clutch shaft bearing 34 and second bearing 36, and install a spacer ring 42 between the clutch shaft bearing 34 and second bearing 36, this spacer ring 42 is made up of the rubber material, to separate the clutch shaft bearing 34 and second bearing 36, make it have the preferred rotary effect.

The running shaft 32 of flabellum group 24 can be socketed in clutch shaft bearing 34, spacer ring 42 and second bearing 36 in regular turn, make running shaft 32 and first and second bearing 34,36 have excellent contact, and the power that is provided by pedestal 26, make running shaft 32 drive fan blade 30 and rotate, and then reach the purpose of heat radiation.

Two bearings of the present utility model are to be positioned over simultaneously in the same containing groove, make the center line aligning degree of two bearings good, do not bear radial force.Be that the utility model is to replace with monolateral core rod moulding bearing containing groove known to hold containing groove with bilateral core rod shaping axle, known bilateral core rod moulding containing groove needs quite high precision, just can obtain the two bearing containing grooves that align, and must insert by two ends of bearing support respectively during the assembling bearing, very trouble.

And the utility model is in the set containing groove of bearing support central authorities, only with a monolateral core rod ejection formation, so do not need high accurancy and precision.During assembling, only the collar need be placed between two bearings to get final product, and the center line aligning degree of two bearings is very high, running shaft also can be easily and is socketed in smoothly among two bearings and the collar, and two bearings and the collar can be inserted by the same end of bearing support simultaneously, and easy to assembly quick, dismounting also is easy to.

The utility model uses monolateral core rod moulding, make the containing groove of bearing support have the identical axle center and the diameter of axle, can provide two bearings to insert simultaneously from same end, make the alignment between running shaft and bearing good, can not cause the bearing radial force, it can be rotated smoothly, prolong the working life of fan simultaneously, to avoid the generation of noise.

The above embodiment only is for technological thought of the present utility model and characteristics are described, its purpose makes the personage who has the knack of this skill 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 feature that technical solutions of the utility model disclosed generally changes or modifies, and must be encompassed in the technical solution of the utility model scope.

Claims

1, a kind of fan of tool duplex bearing, comprise: a flabellum group and a pedestal, the 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; Pedestal is to be combined from inside to outside in regular turn by two metal (uppers and bearing support, and this rotary sleeve is connected in this bearing; It is characterized in that: two bearings are placed in the interior same containing groove of this bearing support simultaneously up and down, and this containing groove is to have the identical axle center and the diameter of axle.

2, fan as claimed in claim 1 is characterized in that: be provided with a spacer ring between two bearings up and down.

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