Sound device

A sound device, comprising:

• a frame;
• a first vibration system,
• a second vibration system;
• and
• a magnetic circuit system;
• wherein the first vibration system comprises a first vibrating diaphragm and a first voice coil, the first vibrating diaphragm is fixed to a first side of the frame, and the first voice coil is configured to drive the first vibrating diaphragm to vibrate and generate sound;
• the second vibration system comprises a second vibrating diaphragm and a second voice coil, the second vibrating diaphragm is fixed to a second side of the frame, and the second voice coil is configured to drive the second vibrating diaphragm to vibrate and generate sound;
• the magnetic circuit system is fixed to the frame and located between the first vibrating diaphragm and the second vibrating diaphragm, a first magnetic gap is defined in one side, close to the first vibration system, of the magnetic circuit system;
• a second magnetic gap is defined in one side, close to the second vibration system, of the magnetic circuit system;
• the first voice coil is inserted and suspended within the first magnetic gap, and the second voice coil is inserted and suspended within the second magnetic gap;
• the first vibrating diaphragm comprises a first vibrating portion, a first folding ring portion, and a first dome;
• the first folding ring portion is annular, the first folding ring portion is bent and extends from an outer periphery of the first vibrating portion;
• the first dome is attached and fixed to the first vibrating portion;
• and an outer periphery of the first folding ring portion is fixed to the frame;
• and
• the second vibrating diaphragm comprises a second vibrating portion, a second folding ring portion, and a second dome;
• the second folding ring portion is annular, the second folding ring portion is bent and extends from an outer periphery of the second vibrating portion;
• the second dome is attached and fixed to the second vibrating portion;
• an outer periphery of the second folding ring portion is fixed to the frame;
• and the second dome and the first dome are both metal domes;
• wherein the first vibration system further comprises a plurality of first elastic components and a plurality of first supporting columns, the plurality of the first elastic components are fixed to the frame and disposed at intervals, the plurality of the first supporting columns are disposed at intervals on one side, close to the magnetic circuit system, of the first dome;
• and one end, distal from the first dome, of each of the plurality of the first supporting columns is connected to one of the plurality of the first elastic components;
• and
• the second vibration system further comprises a plurality of second elastic components and a plurality of second supporting columns, the plurality of the second elastic components are fixed to the frame and disposed at intervals, the plurality of the second supporting columns are disposed at intervals on one side, close to the magnetic circuit system, of the second dome;
• the plurality of the second elastic components and the plurality of the first elastic components are disposed in a staggered mode;
• and one end, distal from the second dome, of each of the plurality of the second supporting columns is connected to one of the plurality of the second elastic components;
• wherein the plurality of the first elastic components comprise four first elastic components, the plurality of the first supporting columns comprise four first supporting columns, the plurality of the second elastic components comprise four second elastic components, and the plurality of the second supporting columns comprise four second supporting columns.