Patent ID: 8087948

Claim:
A waterproof structure for a connector housing comprising a waterproof sealing member which is provided around an electric wire secured to a connecting terminal that is inserted into a terminal accommodating hole formed within the connector housing such that a terminal insertion opening of the terminal accommodating hole is filled with the waterproof sealing member to prevent water from entering the terminal accommodating hole, wherein: said terminal insertion opening of the terminal accommodating hole is formed to have a rectangular cross sectional shape, a taper surface is formed on each of four inner surfaces of said terminal insertion opening, a front portion of said waterproof sealing member is formed to have a substantially elliptical cross sectional shape and is secured to the electric wire by a clamp portion of the connecting terminal, a rear portion of said waterproof sealing member is formed to have a rectangular cross sectional shape and a taper surface is formed on each of four outer surfaces of said rear portion of the waterproof sealing member, said taper surfaces of the waterproof sealing member are urged against said taper surfaces of the terminal insertion opening to seal said terminal insertion opening, said waterproof sealing member is urged against the connector housing by means of a rear holder, and said rear holder is locked to the connector housing.