Motor stator housing for oil and gas separator assembly and injection molding method and pre-injection molded structural member

By employing a secondary injection molding process and designing a pre-injection positioning seat, the problem of inaccurate positioning of electrical connectors during the injection molding of motor stator housings was solved, enabling efficient production and low-cost manufacturing of stator housings.

CN115847713BActive Publication Date: 2026-05-29ZHEJIANG RUICHI TONGLI AUTOMOTIVE ELECTRONICS CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG RUICHI TONGLI AUTOMOTIVE ELECTRONICS CO LTD
Filing Date
2022-09-15
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

In the existing technology, the injection molding process of motor stator housing is difficult to guarantee the positional accuracy of electrical connectors, resulting in high mold production costs and high injection molding difficulty.

Method used

A two-stage injection molding process is adopted. The positioning seat is formed by pre-injection molding. The L-shaped electrical connectors are first positioned parallel to each other at equal intervals to obtain the pre-injection molded structural parts. Then, the second injection molding is performed. The positioning seat is used to position the electrical connectors in the second injection mold to ensure accurate positioning.

Benefits of technology

This improves the positioning accuracy of electrical connectors in the stator housing, reduces mold and mass production costs, and ensures reliable connection between electrical connectors and PCBA boards.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN115847713B_ABST
    Figure CN115847713B_ABST
Patent Text Reader

Abstract

The application relates to a motor stator shell of an oil-gas separator assembly, an injection molding method, a pre-injection molding structural member, a stator assembly and an oil-gas separator assembly. The injection molding method comprises the following steps: after a plurality of L-shaped electric connecting members are positioned in parallel at equal intervals, pre-injection molding is performed to obtain a pre-injection molding structural member comprising positioning seats integrally formed on the L-shaped electric connecting members; and then, after the pre-injection molding structural member is positioned through the positioning seats, secondary injection molding is performed to obtain a stator shell with the L-shaped electric connecting members. The injection molding method of the stator shell provided in the application can realize positioning of the electric connecting members with high accuracy, improves the position degree of the electric connecting members, and reduces the mold cost and the mass production manufacturing cost.
Need to check novelty before this filing date? Find Prior Art