Iron core block of motor, stator core, manufacturing method thereof, stator, motor and household appliance

Abstract

The invention provides an iron core block of a motor, a stator core, a manufacturing method thereof, a stator, the motor and a household appliance. The iron core block comprises a yoke part and a tooth part; along the circumferential direction of the iron core block, a first end of the yoke part is arranged as a first spliced end, an accommodating slot is formed on the first spliced end, bucklingparts are respectively arranged on two side walls of the accommodating slot, the buckling parts extend along an axial direction parallel to the yoke part, and the buckling parts shift toward one sideaway from the accommodating slot under an external acting force; along the circumferential direction of the iron core block, a second end of the yoke part is arranged as a second spliced end, the second spliced end is equipped with a joint bulge, buckling slots are respectively formed on the two sides of the joint bulge, and the buckling slots stretch along the axial direction parallel to the yokepart; the joint bulge of another iron core block can be accommodated in the accommodating slot; the buckling parts are buckled with the buckling slots of another iron core block and are used for limiting the relative displacement of two adjacent iron core blocks along the circumferential direction; the iron core block is capable of reducing the fitting gap between two adjacent iron core blocks, so that the performance stability of the motor can be ensured.

Description

technical field [0001] The invention relates to the field of motors, in particular to an iron core block for a motor, a stator core composed of the iron core block, a stator with the stator core, a motor and a household appliance. Background technique [0002] The motor iron core is the core component in the motor, which is used to increase the magnetic flux of the inductance coil and realize the maximum conversion of electromagnetic power. There are many different types of motor cores, among which the block-type motor core is formed by laminating multiple arc-shaped punches and splicing them together. [0003] Such as Figures 1 to 5 As shown, two arc-shaped punching pieces 101 and 102 adjacent to each other in the circumferential direction in the existing motor iron core are generally spliced ​​by cooperation of dovetail-shaped protrusions 103 and dovetail grooves 104 . This structure results in that each arc-shaped punch can only be inserted longitudinally from top to bo...

AI Technical Summary

Problems solved by technology

This structure results in that each arc-shaped punch can only be inserted longitudinally from top to bottom or from bottom to top when splicing each other. In order to make the splicing process smooth and avoid friction between the arc-shaped punches, when splicing Usually, the gap fit method is adopted, and the existence of the gap will cause the iron core after splicing to become loose, making it difficult to ensure the roundness, which will cause noise and vibration when the motor is running, and affect the service life of the motor

In addition, the existence of the gap also increases the effective gap between the stator and the rotor, which affects the performance of the motor

In addition, the up-and-down insertion splicing method easily deforms the interface of the arc-shaped punches, which will further affect the roundness of the iron core after splicing, and easily damage the insulation between the arc-shaped punches, affecting the performance of the motor