Hall circuit board fixing structure

Abstract

The invention relates to a Hall circuit board fixing structure, and relates to the field of motors. Currently, a fixing mode of a brushless DC motor Hall circuit board is troublesome in installation.A Hall circuit board is disposed on a stator core, wherein the stator core is provided with a yoke, teeth and a slot hole, and an inner side between the teeth is a slot opening. The stator core is provided with a fixed frame. The Hall circuit board is fixed on the fixed frame, and the fixed frame is provided with a positioning and mounting structure of the Hall circuit board, a mounting frame forpositioning and mounting a Hall, and an insulating slot hole sleeve for isolating the stator core and a winding coil. The insulating slot hole sleeve covers the inner side surface of the yoke and theside surface and upper and lower end surfaces of the teeth, so that the slot hole is separated from the yoke and the teeth, and is opened at the slot opening. The structure improves the insulating property between a winding stator iron core coil and the stator core, is convenient to install, is firm in structure, and is good in stability.

Description

technical field [0001] The invention relates to the field of motors, in particular to a Hall circuit board fixing structure. Background technique [0002] At present, there are basically two ways to fix the Hall circuit board of the brushless DC motor. One is that the Hall circuit board is directly bound to the coil with the stator core of the winding. position, but the binding process is cumbersome and the efficiency is very low. Another way is to install the Hall circuit board on the end cover. When inserting, it is necessary to consider its relative position correspondence to ensure the sensing position of the Hall, therefore, both installation methods are inconvenient. [0003] In addition, the insulation between the stator core coil and the stator core of the brushless DC motor is basically realized by insulating paper, and the size of the insulating paper is completed by cutting. Since the insulating paper is relatively soft, it is easy to move when winding the wire ...

AI Technical Summary

Problems solved by technology

[0002] At present, there are basically two ways to fix the Hall circuit board of the brushless DC motor. One is that the Hall circuit board is directly bound to the coil with the stator core of the winding. position, but the binding process is cumbersome and the efficiency is very low. Another way is to install the Hall circuit board on the end cover. When entering, it is necessary to consider its relative position correspondence to ensure the sensing position of Hall, therefore, there are inconveniences in these two installation methods

[0003] In addition, the insulation between the stator core coil and the stator core of the brushless DC motor is basically realized by insulating paper, and the size of the insulating paper is completed by cutting. Since the insulating paper is relatively soft, it is easy to move when winding the wire bit, which eventually leads to the voltage resistance problem of the stator core of the winding

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