An end cap for an electric motor and a washing machine having the same

Abstract

The invention discloses an end cap for an electric machine, comprises a sheet metal bracket and a plastic sealed BMC shell, wherein the plastic sealed BMC shell comprises a bottom of the shell and a bearing chamber, wherein the bearing chamber is directly injection molded of BMC material, a plurality of through holes are arranged on the sheet metal bracket, the sheet metal bracket is injection molded between the bottom of the shell and the bearing chamber, and the plastic sealing material is connected front and rear through the through holes. The invention combines the advantages of the sheetmetal end cover and the plastic end cover, wherein the fastening part of the end cover is a sheet metal support, so as to improve the assembly stability and reliability; the bearing chamber is moldedby BMC injection molding; the concentric degree of the bearing chamber of the end cover is ensured by the precision of the mold during the plastic sealing, so as to reduce the vibration and improve the noise when the rotor rotates; The end cap and the stator shell are fastened by riveting to avoid cracking caused by pressing the end cap directly into the stator, and the rivet fastening operation is simple, the production efficiency is high, and the labor cost is saved.

Description

technical field [0001] The invention relates to an end cover for a motor, in particular to an end cover for a motor of a plastic-sealed washing machine, a connection method and a washing machine having the same. Background technique [0002] Existing plastic-sealed washing machine motors widely use sheet-metal end caps, and there are two ways to connect the sheet-metal end-caps to the plastic-encapsulated housing: 1. There are mounting holes on the sheet-metal end caps, which are connected to the BMC shell by screwing; 2. , Similar to the ABB cover of the plastic-sealed motor, it is directly pressed into the BMC shell. [0003] The Chinese patent with the publication number CN204858764U discloses a plastic-encapsulated motor, which includes an injection-molded stator, a first red steel cardboard, a second red steel cardboard, a rotating shaft, a wave gasket, a squirrel-cage rotor, a bearing and an end cover; the injection-molded stator It has an upper part, a middle part an...

AI Technical Summary

Problems solved by technology

[0006] The technical problems to be solved by the present invention are: the motor uses a sheet metal end cover to run with large vibration and poor noise; the end cover is not firm, it is easy to fall off, and the assembly plastic sealant cracks; the long-term production of the high-impact end cover causes the wear of the mold core to cause the bearing chamber to be too small

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