CN2554417Y

CN2554417Y - Oil-less lubricating bearing

Info

Publication number: CN2554417Y
Application number: CN 02274202
Authority: CN
Inventors: 关英杰; 孙承玉; 刘长波
Original assignee: LIAOYUAN CITY SCIENCE & TECHNOLOGY INST
Current assignee: LIAOYUAN CITY SCIENCE & TECHNOLOGY INST
Priority date: 2002-07-17
Filing date: 2002-07-17
Publication date: 2003-06-04
Anticipated expiration: 2012-07-17

Abstract

The utility model relates to an oil-free lubricated bearing. A bearing inner sleeve is embedded in a bearing outer casing, with a clearance of 0.005mm, that is 2/3 shaft diameter, between the bearing inner sleeve and the bearing outer casing. An elastic body is respectively arranged on an upper end and a lower end between the bearing inner sleeve and the bearing outer casing. The utility model is characterized in that the structure is simple and the friction coefficient is small; vibrations can be effectively absorbed and noise can be reduced and pollution can be decreased; by excellent material capacity and abrasion resistance, the service life of the utility model can be prolonged by three times compared with an oiled powder metallurgy bearing under the same assembling and using condition.

Description

Nonlubricated bearing

The utility model belongs to mechanical parts, and specifically, what it related to is the fan Nonlubricated bearing.

The fan product is widely used in computer, power supply, duplicating machine, printer, electronic instrument, home appliance air draft cooling.The bearing of this fan use mostly is the oil-containing sintered metal powder bearing at present, also has the high-grade fan of part to use miniature bearing.The former is the product that fan extensively adopts, and it belongs to high revolution, long-time running gear.Often tens hours working time, and revolution is generally between 2000-6000 rev/min.This product is along with the increase of service time, and the oil content reduction causes bearing wear serious, and friction factor increases, and the life-span of other parts of fan and bearing is not matched.Generally use and both produced noise more than 2000 hours, even damage, can not continue to use.Though latter's using effect is pretty good, need frequent oiling maintenance, could keep good running state, main is that price is more expensive, accounts for the large percentage of fan price.

The purpose of this utility model is at the problems referred to above, provides a kind of and increases the service life, and reduces noise, reduces the Nonlubricated bearing that pollutes.

The utility model is finished in the following way:

Be provided with certain clearance and elastomer between bearing inner sleeve and the bearing shell, it effectively damping since traditional bearing under dry condition, the mechanical vibration of frictional vibration of rotating component and bearing inner sleeve (creeping phenomenon) and the bad generation of rotating component dynamic balancing are eliminated vibration between bearing inner sleeve and bearing shell.The elastomer that upper and lower end parts between bearing inner sleeve and bearing shell is established, the one, cover in the rigid bearing, the 2nd, play damping effect.

The utlity model has simple in structurely, friction factor is little, and can absorb vibration effectively, reduces noise, reduces and pollutes; Because excellent material performance, wear-resistant, under equal assembling service condition, than the oil-containing sintered metal powder bearing characteristics such as three times that can increase the service life.

Fig. 1 is the utility model overall structure figure.

Below in conjunction with accompanying drawing the utility model is described in detail:

The feature of Nonlubricated bearing is that bearing inner sleeve [2] is embedded in the bearing shell [3], have the gap between bearing inner sleeve [2] and the bearing shell [3], gap between bearing inner sleeve [2] and the bearing shell [3] is the 0.005mm-diameter of axle 2/3, upper and lower end parts between bearing inner sleeve [2] and the bearing shell [3] is provided with an elastomer [1] at least, elastomer [1] material available metal spring, elastic material etc., bearing inner sleeve [2] are to make with macromolecular material or powder metallurgy or bearing alloy material.

Embodiment

As the bearing inner sleeve [2] of φ 3mm diameter of axle radiation fan and the gap between the bearing shell [3] is 0.2-0.3mm, upper and lower end parts between bearing inner sleeve [2] and the bearing shell [3] is equipped with elastomer [1], the material of elastomer [1] is to make with rubber, thickness is 0.3-0.5mm, bearing inner sleeve [2] selects for use friction factor low, high temperature performance and chemical stability are good, are not subjected to PPS that ambiance influences and polytetrafluoroethylmodified modified macromolecular material injection molded.

Claims

1, a kind of Nonlubricated bearing, it is characterized in that bearing inner sleeve [2] is embedded in the bearing shell [3], have the gap between bearing inner sleeve [2] and the bearing shell [3], gap between bearing inner sleeve [2] and the bearing shell [3] is the 0.005mm-diameter of axle 2/3, and the upper and lower end parts between bearing inner sleeve [2] and the bearing shell [3] is provided with an elastomer [1] at least.

2, Nonlubricated bearing as claimed in claim 1 is characterized in that bearing inner sleeve [2] is to make with macromolecular material or powder metallurgy or bearing alloy material.

3, Nonlubricated bearing as claimed in claim 1 is characterized in that elastomer [1] material available metal spring, elastic material etc.