Combined motor stator structure

Abstract

This invention provides a combined motor stator structure including a first stator group with at least a first jogged part and a second stator group having at least a second jogged part corresponding to the first one, among which, the two stator groups are made of a same material. When they are combined, the first jogged part of the first stator group is connected with the second jogged part of the second stator group to form a motor stator structure with a waist post part.

Description

【Technical field】 [0001] The invention relates to a combined motor stator structure, especially a motor stator structure applied to a cooling fan. 【Background technique】 [0002] The current electronic industry is increasingly developing toward thinner, lighter and smaller, followed by the miniaturization of all electronic components, especially the motors used in cooling fans. [0003] Generally existing DC brushless motor structure at present, as shown in Fig. Two silicon steel sheets 14 and a 3rd silicon steel sheet 15 are made up of, and wherein the magnetic permeable ring 10 that places in the middle and this first and second coil base 11,12 and first, second and the 3rd silicon steel sheet 15 are mutually tight Matching connection, when the first, second or third silicon steel sheet 15 is tightly fitted into the magnet ring 10, it must pass through the holes 131, 141, 151 on it to connect with the first coil seat 11 and the second coil seat respectively. Only when th...

AI Technical Summary

Problems solved by technology

However, since the coil base itself is made of plastic, and the first, second and third silicon steel sheets are tightly fitted and pressed into the magnet ring, they often cannot be pressed into the correct angle and depth position, which causes inconvenience in mass production.

Furthermore, the cylindrical magnet ring cannot be stamped through a mold at one time, and must be made through internal and external turning processes, which causes difficulty in processing and relatively high production costs.

In addition, because the material of the magnet ring is different from that of the first, second and third silicon steel sheets, in terms of magnetic circuit design, eddy current loss (reluctance) and high heat are likely to occur on the magnet ring, which is likely to cause residual magnetism phenomenon, thus forming a bad magnetic circuit

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