US 12,281,429 B1
Integrated molded structure of outer tub and direct drive motor stator of drum washing machine
Hongyu Zhu, Hefei (CN); and Andong Song, Heifei (CN)
Assigned to HEFEI MELONI INTELLIGENT TECHNOLOGY CO., LTD., Anhui (CN)
Appl. No. 18/834,548
Filed by HEFEI MELONI INTELLIGENT TECHNOLOGY CO., LTD., Hefei (CN)
PCT Filed Jun. 12, 2024, PCT No. PCT/CN2024/098591
§ 371(c)(1), (2) Date Jul. 30, 2024,
.
Int. Cl. D06F 37/26 (2006.01); D06F 37/02 (2006.01); D06F 37/30 (2020.01)
CPC D06F 37/262 (2013.01) [D06F 37/02 (2013.01); D06F 37/304 (2013.01); D06F 37/264 (2013.01)] 4 Claims
OG exemplary drawing
 
1. An integrated molded structure of an outer tub and a direct drive motor stator of a drum washing machine, comprising a stator body and an outer tub body that are integrally injection-molded; wherein:
the stator body is integrally injection-molded directly with the outer tub body, or the stator body is injection-molded alone, and then is integrally injection-molded with the outer tub body;
the stator body comprises a stator inner ring portion and a stator outer ring portion; a plurality of stator rib portions are connected in an integrally injection-molded manner between an outer circumferential surface of the stator inner ring portion and an inner circumferential surface of the stator outer ring portion; and
the stator inner ring portion, the stator rib portions and the stator outer ring portion are placed in a mold of the outer tub body opposite to the stator body, which has a concentricity restriction effect;
the outer tub body comprises a tub body inner ring portion and a tub body outer ring portion; a plurality of inner ring tooth portions are connected between an outer circumferential surface of the tub body inner ring portion and an inner circumferential surface of the tub body outer ring portion in an integrally injection-molded manner; the tub body inner ring portion is connected to the stator inner ring portion in an integrally injection-molded manner in a sizing groove portion opened in an axial direction; sizing hole portions communicated with the sizing groove portion are opened in the inner ring tooth portion; and the interior of the sizing hole portion is connected to the stator rib portions in an integrally injection-molded manner; and
a bottom opening end face of the stator outer ring portion is connected to a top opening end face of the tub body outer ring portion in an integrally injection-molded manner, and the inner circumferential surface of the stator outer ring portion is connected to the inner ring tooth portion in an integrally injection-molded manner.