The sheet-like insert extending from the inside of the jack seat is combined with the combination seat and inserted into the lead terminal piece, and then the insert is bent and attached to the back of the lead terminal piece to form a contact and combination state. Due to the unstable contact between the splicing piece and the lead terminal piece, this structure is easy to loosen.

Therefore, vibration may occur during use, resulting in noise and poor radio quality. Two-wire structure (divided into signal and grounding) is used to transmit mono signals; Sometimes, a three-wire structure (divided into a positive electrode, a negative electrode and a shield) is used to transmit mono signals in a balanced manner.

Extended data

Acoustic structures such as cavities and holes are important parts that affect performance. The magnetic circuit system and the vibration system are fixed by a plastic frame called a table top, and the edge of the diaphragm is bonded to this frame. The frame should be rigid enough not to be deformed by the fixed magnetic circuit and the vibration part, and the transmitted vibration should be as small as possible.

Behind the magnetic circuit and the vibration system is the shell of the earphone, and a cavity is formed between the shell and the desktop. The size and shape of the cavity, the location, type and quantity of damping material filled in it affect the frequency response of the earphone. Generally speaking, the larger the cavity, the easier it is to obtain high quality and deep dive low frequency.

Baidu Encyclopedia-Headphone Port

Optimal Design of Headphone Socket Structure Protection Based on Abaqus