A connector (1) according to the present invention comprises: a housing (2) for demarcating a male connector insertion portion (4) into which a male connector (100) is inserted from the outside a slit (14) And an elastic valve element (3) for closing the part (4), wherein the elastic valve element (3) has a top surface (10) on which the slit (14) is formed and a top surface Wherein the elastic valve body contacts the top face and the bottom face of the elastic valve body and the elastic valve body contacts the top face and the bottom face of the elastic valve body, (34) which holds the valve body (3) from the top surface (10) side so as to surround the slit (14), and the holding portion (34) Wherein a diameter (W1) of the bottom side clamping portion (36) in contact with the bottom face (11) is shorter than a diameter (W2) of the top face side clamping portion (35) in contact with the top face (10) As shown in FIG.本発明に係るコネクタ(1)は、オスコネクタ(100)が外方から挿入されるオスコネクタ挿入部(4)を区画するハウジング(2)と、スリット(14)を有し、前記オスコネクタ挿入部(4)を閉塞する弾性弁体(3)と、を備え、前記弾性弁体(3)は、前記スリット(14)が形成された天面(10)と、当該天面(10)とは反対側の底面(11)と、を有し、前記ハウジング(2)は、前記弾性弁体(3)の前記天面(10)及び前記底面(11)に接触して前記弾性弁体(3)を挟持する挟持部(34)を有し、前記挟持部(34)は、前記弁体(3)を天面(10)側から見た場合に、前記スリット(14)を取り囲むように設けられ、前記底面(11)と接触する底面側挟持部(36)の直径(W1)が、前記天面(10)と接触する天面側挟持部(35)の直径(W2)よりも短いことを特徴とする。
