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Sintered bearing

A technology of sintering bearings and bearing surfaces, which is applied to shafts and bearings, bearing components, mechanical equipment, etc., can solve the problems of increased power consumption of electric motors and increased fluid resistance of lubricants, so as to reduce power consumption and increase average power consumption. Gap, the effect of suppressing the decrease in strength

Active Publication Date: 2020-10-09
PORITE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the gap between the rotating shaft and the bearing is too small, the fluid resistance of the lubricant when the shaft rotates increases, resulting in increased power consumption of the motor
On the other hand, as the viscosity of the lubricant increases, the fluid resistance increases, which will also cause the power consumption of the motor to increase

Method used

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Embodiment Construction

[0066] Hereinafter, the sintered bearing 20 according to the embodiment of the present invention will be described with reference to the drawings.

[0067] The sintered bearing 20 can be widely used in various home appliances, various electric motors for vehicles, OA equipment (office automation equipment), and the like. In this embodiment, an example in which the sintered bearing 20 is applied to the fan motor 1 is shown.

[0068] (Structure of fan motor 1)

[0069] figure 1 is a partial sectional view of the fan motor according to the embodiment of the present invention, figure 2 yes figure 1 The shown fan motor has a cross-sectional view of the sintered bearing, image 3 yes figure 2 A partial enlarged view of the bearing surface of the sintered bearing shown.

[0070] figure 1 The illustrated fan motor 1 has a housing bracket 2 , a sintered bearing 20 held by the housing bracket 2 , and a rotary shaft 10 supported by the sintered bearing 20 so as to be freely rota...

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Abstract

The invention provides a sintered bearing capable of reducing rotating shaft resistance. According to the solution, the sintered bearing (20) involved in the invention has a first bearing part (21), a second bearing part (22) and an intermediate part (23), the first bearing part (21) has a first bearing surface (21a) supporting the outer peripheral surface of a rotating shaft (10), a second bearing part (22) has a second bearing surface (22a) supporting the outer peripheral surface of the rotating shaft (10), the intermediate part (23) is disposed between the first bearing part (21) and the second bearing part (22). The inner diameter of the intermediate part (23) is greater than that of the first bearing part (21) and the second bearing part (22). In addition, a plurality of pits (d) are formed on at least one bearing surface (21a, 22a) of the first bearing surface (21a) and the second bearing surface (22a).

Description

technical field [0001] The invention relates to a sintered bearing, which is formed by pressing metal powder in a mold and then sintering, and is impregnated with a lubricant. In particular, the present invention relates to a sintered bearing capable of reducing noise while reducing frictional resistance between the bearing and a rotating shaft. Background technique [0002] Sintered bearings are widely used as low-cost and highly reliable bearings in motors for home appliances, motors for vehicles, and OA equipment (office automation equipment). Examples of fan motors include cooling fans inside electronic computers and televisions, fans for circulation and cooling inside refrigerators, and in-vehicle motors used for cooling batteries and suctioning sensors in cars. Fans, etc., the demand for fan motors is increasing every year. [0003] Since devices using fan motors have a long service life, the fan motors are required not only to have a long service life but also to ha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C33/10
Inventor 田边重之古川智庸麻生忍
Owner PORITE