Waterproof structure for casing of electronic device

A waterproof structure for a casing of an electronic device, comprising:

• a first casing member, having a first casing portion, a first side portion surrounding the periphery of the first casing portion, and a plurality of first pegs disposed in and protruded from the first casing portion;
• a second casing member, assembled with the first casing member, and having a second casing portion, a second side portion surrounding the periphery of the second casing portion, a plurality of second pegs disposed in and protruded from the second casing portion, and configured to be corresponsive to the first pegs respectively;
• a waterproof member, having a ring portion, and a plurality of packing portions formed by integrally coupling the ring portion, and the ring portion being surrounded continuously by the first and second side portions and clamped between the first and second side portions, and the packing portions being disposed between the first and second pegs respectively;
• and
• a plurality of locking elements, passing into the first and second pegs to combine the first and second casing members.