US Patent 9742098 Electrical connector having waterproof function

An electrical connector includes an insulative housing, a number of contacts accommodated in the insulative housing, a metal shell attached to the housing and defining a receiving space and a waterproof portion formed behind the receiving space. The insulative housing includes a groove, a tongue portion located in front of the groove, and a holding potion located behind the groove. The holding portion has a dispensing port communicating with the groove and an exterior. Each contact has a contacting section exposed on the tongue portion, a connecting section exposed from the groove, a holding section accommodated in the holding portion of the insulative housing, and a soldering section extending from the holding portion. The waterproof portion is received in the groove.