Diaphragm and sound production device

The utility model discloses a vibrating diaphragm and a sound production device with the vibrating diaphragm. The vibrating diaphragm comprises a dome, a folding ring part and a fixing part. Wrinklesare arranged on the folding ring part; the wrinkles are of a concave structure on the folding ring part; the wrinkles comprise first wrinkle groups surrounding the dome, second wrinkle groups arrangedat intervals with the first wrinkle groups, and third wrinkle groups arranged between the second wrinkle groups at intervals; the concave depth of the third wrinkle group is smaller than the concavedepth of the first wrinkle group and the concave depth of the second wrinkle group, and the concave direction of the second wrinkle group is opposite to the concave direction of the third wrinkle group. The sound production device provided by the utility model is high in diaphragm and not easy to flatten, and the vibration stability of the sound production device is improved. 本实用新型公开了一种振膜及具有该振膜的发声器件，所述振膜包括球顶、折环部和固定部，所述折环部上设