Acoustic device

An acoustic device comprising:

• a waterproof vibrating membrane;
• a magnetic component which is disposed below the waterproof vibrating membrane, the magnetic component including a magnet;
• and
• a protection panel which is disposed above the waterproof vibrating membrane, the protection panel including an opening,
• wherein the waterproof vibrating membrane includes a first central region as a convex portion which protrudes toward a position where the magnetic component is located, and a concave portion surrounding the first central region which is recessed opposing to a position where the magnetic component is located, and
• wherein the protection panel includes a second central region as a convex pressure buffering portion which protrudes corresponding to a shape of the convex portion at a position corresponding to the convex portion of the waterproof vibrating membrane wherein the convex pressure buffering portion protrudes opposing to a side on which the waterproof vibrating membrane is located, and a concave pressure buffering portion surrounding the second central region which is recessed corresponding to a shape of the concave portion at a position corresponding to the concave portion of the waterproof vibrating membrane wherein the concave portion is recessed toward a side on which the waterproof vibrating membrane is located.

An acoustic device comprising:

• a waterproof vibrating membrane;
• and
• a magnetic component which is disposed below the waterproof vibrating membrane, the magnetic component including a magnet, wherein
• the waterproof vibrating membrane includes a first central region as a convex portion and a concave portion surrounding the first central region, and
• the magnetic component includes a second central region as a concave pressure buffering portion which is recessed corresponding to a shape of the convex portion of the waterproof vibrating membrane and a convex pressure buffering portion surrounding the second central region which protrudes corresponding to a shape of the concave portion of the waterproof vibrating membrane.