| 摘要 |
A back-volume terminal structure of a micro-speaker module is provided to prevent the deterioration of sound due to reflection sound or leakage sound by completely blocking sound radiated into the rear of the micro-speaker. A back-volume terminal structure of a micro-speaker module includes an upper case, and a lower back-volume case. The upper case has a micro-speaker. The lower back-volume case is coupled at the upper case, has a sealed space, and has a back-volume terminal(100) which connects the micro-speaker and a PCB(Printed Circuit Board) installed outside. The back-volume terminal(100) includes a first horizontal terminal(110) which forms a connection surface connected to a board of the micro-speaker by a connection wire, a second horizontal terminal(120) which is curved downward from the end of the first horizontal terminal(110) to be overlapped at the bottom of the first horizontal terminal(110), and a connection unit terminal(130) which is curved to be extended downward from the end of the second horizontal terminal(120). The first horizontal terminal(110) of the back-volume terminal(100) and one end of the second horizontal terminal(120) is insert-molded at a bottom plate(221) of the back-volume case as a single body. The connection unit terminal(130) is protruded outside the bottom plate(221) of the back-volume case to prevent a gap through which sound waves are leaked. |
