Fan base structure with integral bearing and shaft tube

Abstract

An integrated fan base structure of bearings and a shaft tube comprises a base, the first bearing and the second bearing. The base is the integrally formed hollow shaft tube. The first bearing is wrapped by the hollow shaft tube during integral forming. The second bearing is arranged in the integrally formed hollow shaft tube and corresponds to the first bearing, and the second bearing and the first bearing are perpendicularly arranged at an interval.

Description

technical field [0001] The utility model relates to a base structure of a fan, in particular to a base structure of a fan in which a bearing and a shaft tube are integrally formed. Background technique [0002] At present, most fan frames and bases are made of plastic materials. Since they choose to use plastic materials, most of them will be completed by plastic injection molding, because plastic injection molding has the highest efficiency and is suitable for variable designs. [0003] However, the finished product using plastic injection molding will produce shrinkage or deformation of the plastic. There are many reasons for the shrinkage or deformation of the plastic, which are listed below: [0004] 1. Because the thickness of the formed meat is uneven and the difference is too large, since the thin meat is easier to cool and solidify, the raw material that cools slowly in the thick meat is stretched, resulting in shrinkage and sag. [0005] 2. Because crystalline plas...

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Problems solved by technology

[0006] 3. Due to the uneven cooling of the finished product, the slow cooling shrinks greatly, and when the crystallization is uneven, it will cause uneven shrinkage and deformation

[0007] 4. Deformation occurs due to the large difference in the thickness of the finished product and the difference in shrinkage

[0011] However, the known technology has its problems, because the use of plastic injection molding will produce shrinkage or deformation of the plastic as described above, resulting in slight shrinkage or deformation of the first chamber 111 and the second chamber 112, and the two One of the two bearings 12, 13 is set for a tight fit, and the other is set for a loose fit. Therefore, after the two bearings 12, 13 are placed into the first accommodation chamber 111 and the second accommodation chamber 112, two bearings 12 will be produced. , 13 different axes (such as Figure 1C As shown, there is a gap between the axes of the two bearings 12, 13 A)

This will cause stuck and abnormal sound

In addition, it will also cause the holding force of the two bearings 12, 13 to be too large or too small. Once the holding force of the bearing is too large, the bearing is easy to deform; if the holding force of the bearing is too small, the bearing is easy to loosen and fall off.

At the same time, the consistency of assembly will also deteriorate, reducing production efficiency

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