A waterproof connector with at least a first dummy plug includes an inner housing provided with a plurality of contact accommodating cavities. A sealing member is provided with a plurality of contact insertion openings corresponding to the contact accommodating cavities. The sealing member is attached to a rear side of the inner housing. An outer housing is provided with a plurality of contact insertion openings corresponding to the contact accommodating cavities. The outer housing secures the sealing member to the inner housing. The first dummy plug has a sealing portion extending into at least one of the contact insertion openings of the sealing member, at least one elastic piece that elastically latches between the inner housing and the outer housing, an insertion member arranged in the contact insertion opening of the outer housing, and a pull-out member that extends outward from the outer housing.
1. A dummy plug, comprising:
a sealing portion;
an insertion member extending rearward from the sealing portion;
a pull-out member extending rearward from the insertion member; and
at least one elastic piece that extends diagonally from the dummy plug between the sealing portion and the insertion member, and includes an extension member integrally formed therewith, that extends into a slit in the insertion member.
2. The dummy plug of claim 1 , wherein the sealing portion has a circular cylindrical shape and the insertion member has a substantially rectangular parallelepiped shape.
3. The dummy plug of claim 1 , wherein the elastic piece has a cantilever shape.
4. The dummy plug of claim 1 , wherein a flange is arranged between the pull-out member and the insertion member.
5. The dummy plug of claim 1 , wherein the sealing portion has a circular cylindrical shape and the insertion member has a substantially circular cylindrical shape.
6. The dummy plug of claim 1 , wherein a non-deformable projection extends from the dummy plug between the sealing portion and the insertion member.
7. The dummy plug of claim 1 , wherein the dummy plug is integrally formed from molding a synthetic resin.