CN2708012Y

CN2708012Y - Prepressed pivot of radiating fan

Info

Publication number: CN2708012Y
Application number: CN 200420066076
Authority: CN
Inventors: 张良升
Original assignee: Forcecon Technology Co Ltd
Current assignee: Forcecon Technology Co Ltd
Priority date: 2004-06-14
Filing date: 2004-06-14
Publication date: 2005-07-06
Anticipated expiration: 2014-06-14

Abstract

The utility model provides a pre-pressed pivot of a radiating fan. The center of a rotor is provided with a pivot which is pivoted in the hole slot of the shaft seat of a stator. The hole slot is provided with a shaft bearing member which is pivoted and bunted on the bottom end of the pre-pressed pivot of the radiating fan. An oil-containing bearing is arranged on the upper side of the shaft bearing member. A pre-pressed component is arranged between the hole slot of the shaft seat and the pre-pressed pivot of the radiating fan. The pre-pressed component comprises a second bearing, a limiting blocking ring, and a spring. The second bearing is assembled at the top segment of the hole slot, and is provided with an inner ring, an outer ring, and a roller. The outer ring is fixed at the top segment of the hole slot, and the inner ring and the pre-pressed pivot of the radiating fan are close matched. The bottom end of the second bearing and the top end of the oil-containing bearing are provided with space. The limiting blocking ring is assembled on the bottom segment of the pre-pressed pivot of the radiating fan. The spring is positioned between the inner ring of the second bearing and the limiting blocking ring. The pre-pressed pivot of the radiating fan has simple structure, convenient assembly, high efficiency, and stable operation.

Description

Radiation fan prepressing type pivot

Technical field

The utility model relates to radiation fan, refers to a kind of radiation fan prepressing type pivot that is equiped with the preload component of second bearing, spacing back-up ring and spring especially.

Background technique

Radiation fan generally is made up of rotor and stator, because the assembled state of traditional heat-dissipating fan propeller and stator, the error that still exists some to be difficult to avoid causes instability in the rotor operation process, vibrates scarce frauds such as excessive; Therefore, more advanced radiation fan all has additional prepressing structure in rotor combination place at present, makes the rotor running more steady; But, present existing prepressing structure, because development time is not long, the stability after convenience of no matter assembling or group are fixed is not all attained perfect, still has sizable improvement space; Therefore, how to develop a kind of certain ideal, practical new structure, remain relevant industry and have the inclination that the personage is thought, necessity of breakthrough in fact.

Summary of the invention

Main purpose of the present utility model is to provide a kind of simple in structure, easy to assembly, efficient height, the rotor radiation fan prepressing type pivot stably that turns round.

A kind of radiation fan prepressing type pivot, the stator of this radiation fan and rotor are provided with corresponding coil groups and magnet ring, be provided with flabellum at rotor outer periphery spacer ring, central authorities are provided with a pivot, and hub setting is in the hole slot of stator central authorities axle bed, this hole slot bottom is provided with the axle that pivot is butted on the pivot bottom and is subjected to part, and this is subjected to the part top to be provided with an oil-impregnated bearing that articulates section at the bottom of the positioning pivot; Be provided with preload component between this axle bed hole slot and the pivot; It is characterized in that:

This preload component comprises second bearing, a spacing back-up ring and a spring; Second bearing pack is located at the section place, top of axle bed hole slot, have inside and outside circle and roller, section preset height place, hole slot top is fixed in the outer ring of second bearing, drive fit between the inner ring of second bearing and pivot, and a clearance space is left on the second bearing bottom and oil-impregnated bearing top; What this spacing back-up ring was mounted on section at the bottom of the pivot is positioned at institute slot milling height place, oil-impregnated bearing top; This spring housing places between second bearing and spacing back-up ring of section at the bottom of the pivot, and the normality lower spring is roof pressure limiting block round.Wherein:

Described second bearing is a ball bearing.

Described spacing back-up ring is a clasp, and section preset height place offers the respective rings groove of a buckle back-up ring at the bottom of pivot.

Described axle bed hole slot top is provided with the internal projecting ring edge on the second bearing top, a location.

Advantage of the present utility model is:

1, owing on the radiation fan prepressing type pivot preload component of second bearing, spacing back-up ring and spring is housed, only set up three members, thus radiation fan simple in structure, easy to assembly, efficient is high.

2, owing to the preload component on the prepressing type pivot, cover fastening position mode is very firm, up deviates from so can effectively prevent pivot, guarantees the steady of rotor running.

3, since spring housing be butted on the pivot between second bearing inner race and back-up ring, with pivot turn simultaneously in, can not influence the flexible regular event of its pressurized.

Description of drawings

Fig. 1, be cross-sectional schematic of the present utility model.

Fig. 2, be sectional exploded view of the present utility model.

Embodiment

For to structure of the present utility model, feature and effect thereof, can have and further understand and be familiar with, lift a preferred embodiment now, and conjunction with figs. is described in detail as follows:

Shown in Fig. 1,2, a kind of radiation fan prepressing type pivot, this radiation fan is made of stator 10 and rotor 20; This stator 10 is provided with corresponding coil groups 11 and magnet ring 21 with rotor 20, these rotor 20 outer periphery spacer rings are provided with flabellum 22, central authorities are provided with a pivot 23, hub setting is in the hole slot 13 of stator 10 central axle beds 12, these hole slot 13 bottoms are provided with the axle that pivot is butted on pivot 23 bottoms and are subjected to part 30, and this is subjected to part 30 tops to be provided with an oil-impregnated bearing 40 that articulates positioning pivot 23 end section; More be provided with preload component between these axle bed 12 hole slots 13 and the pivot 23; Wherein:

This preload component comprises second bearing, 50, one a spacing back-up ring 60 and a spring 70; Second bearing 50 is mounted on the top section of axle bed 12 hole slots 13, second bearing 50 has inside and outside circle 51,52 and roller 53, section preset height place, hole slot 13 top is fixed in the outer ring 52 of this second bearing 50,23 on the inner ring 51 of second bearing 50 and pivot are drive fit, and a clearance space is left on second bearing, 50 bottoms and oil-impregnated bearing 40 tops; This spacing back-up ring 60 is mounted on 23 end of pivot section and is positioned at institute slot milling height place, oil-impregnated bearing 40 tops; This spring 70 is placed between the inner ring 51 and spacing back-up ring 60 of second bearing on the section at the bottom of the pivot.

Wherein, second bearing 50 can be a ball bearing.

This spacing back-up ring 60 can be a clasp, and offers the respective rings groove 24 of a buckle back-up ring in section preset height place, 23 end of pivot;

The top of these axle bed 12 hole slots 13 is provided with the internal projecting ring edge 14 on second bearing, 50 tops, a location, to reach limit effect.

Shown in Fig. 1,2, the assembling process of this radiation fan prepressing type pivot is as follows:

Earlier second bearing 50 is up placed hole slot 13 by stator 10 axle beds 12 bottoms, be resisted against internal projecting ring edge 14; Then the pivot 23 of rotor 22 is passed from top to bottom in the hole slot 13 that second bearing 50 stretches into axle bed 12; Spring 70 is placed on 23 end of pivot section, more spacing back-up ring 60 is locked in 23 slot milling height of pivot place, scheduled in axle bed 12 hole slots 13 bottoms for 30 groups by part on oil-impregnated bearing 40, axle again, can finish whole assemblings; After the assembling,, can make rotor 20 turn round more steadily because roof pressure limiting block circle 60 down all the time under spring 70 normalities pulls to stator 10 with pivot 23 together with rotor 20 and is the pressure holding state; On the other hand, these spring 70 tops stay on the inner ring 51 of second bearing 50, and are capable of expansion and contraction when making spring 70 pressurizeds, and do not influence its regular event with pivot 23 turns simultaneously.

The utlity model has following obvious effect: owing on the radiation fan prepressing type pivot preload component that comprises second bearing, spacing back-up ring and spring is housed, only set up three members simple in structure, make the simple in structure, easy to assembly of radiation fan but the efficient height, and cover fastening position mode is very firm, can prevent effectively that pivot from up deviating from, running steadily has practical progressive.

The above only is preferred embodiment of the present utility model; be not to limit practical range of the present utility model with this; such as those who are familiar with this art; use principle of the present utility model and technical characteristics; various changes and the decoration done all should be covered by within the category that these claims protect.

Claims

1, a kind of radiation fan prepressing type pivot, the stator of this radiation fan and rotor are provided with corresponding coil groups and magnet ring, be provided with flabellum at rotor outer periphery spacer ring, central authorities are provided with a pivot, and hub setting is in the hole slot of stator central authorities axle bed, this hole slot bottom is provided with the axle that pivot is butted on the pivot bottom and is subjected to part, and this is subjected to the part top to be provided with an oil-impregnated bearing that articulates section at the bottom of the positioning pivot; Be provided with preload component between this axle bed hole slot and the pivot; It is characterized in that:

This preload component comprises second bearing, a spacing back-up ring and a spring; Second bearing pack is located at the section place, top of axle bed hole slot, have inside and outside circle and roller, section preset height place, hole slot top is fixed in the outer ring of second bearing, drive fit between the inner ring of second bearing and pivot, and a clearance space is left on the second bearing bottom and oil-impregnated bearing top; What this spacing back-up ring was mounted on section at the bottom of the pivot is positioned at institute slot milling height place, oil-impregnated bearing top; This spring housing places between second bearing and spacing back-up ring of section at the bottom of the pivot, and the normality lower spring is roof pressure limiting block round.

2, radiation fan prepressing type pivot according to claim 1, it is characterized in that: described second bearing is a ball bearing.

3, radiation fan prepressing type pivot according to claim 1, it is characterized in that: described spacing back-up ring is a clasp, and section preset height place offers the respective rings groove of a buckle back-up ring at the bottom of pivot.

4, radiation fan prepressing type pivot according to claim 1 is characterized in that: described axle bed hole slot top is provided with the internal projecting ring edge on the second bearing top, a location.