公开(公告)号：US20180359545A1

公开(公告)日：2018-12-13

申请号：US15781081

申请日：2016-05-06

Applicant: Goertek Inc.

Inventor： Qingyi ZHANG ,  Gang CHEN ,  Shuangshuang FAN

IPC: H04R1/02 ,  H04M1/02 ,  H04R1/22 ,  H04R31/00

CPC classification number: H04R1/02 ,  H04M1/02 ,  H04M1/03 ,  H04R1/22 ,  H04R31/006 ,  H04R2201/029 ,  H04R2499/11

Abstract: The present invention discloses a speaker and a rear cover therefor. The rear cover comprises a rear cover body whose one side is provided with a first connection portion; and a connection assembly provided with a first surface and a second surface which are connected with each other. A contact is formed by extending and bending the first surface, and is provided with a conductor. A connection hole is further formed in the first surface. A limiting device and a second connection portion are arranged on the second surface; and the cross section of the limiting device is C-shaped. The connection assembly is connected to the first connection portion of the rear cover body through the second connection portion. The contact is configured to conduct the speaker with the outside. The connection hole is configured to fix the speaker or conduct the speaker with other components.

公开(公告)号：US20190158960A1

公开(公告)日：2019-05-23

申请号：US16097423

申请日：2016-12-28

Applicant: GOERTEK INC.

Inventor： Qingyi ZHANG ,  Gang CHEN ,  Zhenjun LI ,  Shuangshuang FAN

IPC: H04R9/06 ,  B29C45/14 ,  H04R9/02 ,  H04R31/00

Abstract: The present invention provides a sound generation device and a preparation method of a metal plastic part. The sound generation device comprises a metal plastic part. The metal plastic part comprises a plastic part and a metal insert that is combined with the plastic part. An oxidation film that is obtained through metal nanocrystallization and a nanopore that is formed in a surface of the oxidation film and has a pore diameter of 20-1,000 nm are arranged on a surface of the metal insert. The nanopore is filled with a resin composition from which the plastic part is made. As the nanopore is filled with the resin composition from which the plastic part is made, the metal insert and the plastic part are in close fit with each other, which greatly enhances the gluing capability of the metal insert and prevents the metal insert and the plastic part which are formed through injection molding from being separated. A length of a portion embedded into the plastic part of the metal insert is greatly reduced, such that transfer of ultrasonic energy is smooth. The metal plastic part is effectively prevented from ultrasonic unmelting. Thus, the waterproofness and the sealing property of the metal plastic part are improved. Accordingly, the performance of the sound generation device is improved.