1results about How to "No structural changes" patented technology

The application discloses a micro loudspeaker, a processing technology of a metal reversing tube and electronic equipment, wherein the micro loudspeaker comprises a package body which is provided with a first sound outlet hole; a loudspeaker unit which is arranged in the package body and divides the package body into a front sound cavity and a rear sound cavity, and the front sound cavity is communicated with the first sound outlet hole; and a metal reversing tube which is communicated with the rear sound cavity at one end and communicated with the outside at the other end, and a waterproof coating is attached to the end face and / or the inner wall of the end of the metal reversing tube which is communicated with the outside. The application discloses a micro loudspeaker, a processing technology of a metal reversing tube and electronic equipment, and the waterproof coating is attached to the metal reversing tube, when water is encountered, water droplets are condensed on the tube opening, and the water continues to enter the metal reversing tube, so that the waterproof purpose is achieved, the waterproof performance of the micro loudspeaker is effectively enhanced, and the original acoustic performance of the micro loudspeaker is reserved.