公开(公告)号：US20240372576A1

公开(公告)日：2024-11-07

申请号：US18557757

申请日：2022-04-20

Applicant: Huawei Technologies Co., Ltd.

Inventor： Tao Yang ,  Shaohui Zhang ,  Yong Zhao ,  Guoliang Huo

IPC: H04B1/3888 ,  H04M1/02

Abstract: A middle frame includes a flat part and a first recess part that are integrally molded, where the first recess part is recessed relative to a first surface of the flat part to form a first groove, where an opening is located on the first surface; the first recess part includes a bottom wall, a first side wall, and a second side wall, where an orientation of the bottom wall is the same as that of the first surface, the first side wall and the second side wall separately intersect the bottom wall, and the first side wall is connected to the second side wall; and an opening formed by the first side wall and the second side wall is gradually enlarged in a first direction parallel to a flow direction of a die casting material in a die casting molding process of the middle frame.