Patent ID: 9423063
Filing Date: 2016-08-23
CPC Classification: F16J,F16K,F16L

Claim Text:
1. An oil pipe female coupler comprising a body, a sealing member, and an oil seal having a through-hole, with the body including a hollow interior, an open end intercommunicated with an upper end of the hollow interior, and a connection end intercommunicated with a lower end of the hollow interior, with the hollow interior being tubular, with an elastic element and a ball received in the hollow interior, with the body further including an inner wall having first and second flanges, with an annular wall projecting upwards from the second flange and including cross sections having increasing widths from a top of the annular wall towards a bottom of the annular wall and having a slope, with the elastic element including a bottom end pressing against the first flange, with the elastic element further including a top end pressing against the ball, with the ball sealing the through-hole of the oil seal, with the sealing member sealing the open end of the body, with the sealing member including a through-hole intercommunicated with the open end of the body, an inner annular wall, and an outer annular wall surrounding the inner annular wall, with the inner annular wall defining a receiving portion, with a receiving groove defined between the inner annular wall and the outer annular wall, with the outer annular wall of the sealing member welded and fixed to the body by ultrasonic welding, and with the oil seal including an annular ring having the through-hole in a center thereof, an annular wing extending outwards from the annular ring, and an annular block extending outwards from the annular wing, with the annular block having a height larger than a height of the annular wing, with the annular ring of the oil seal received in the receiving portion of the sealing member, with the annular block of the oil seal received in the receiving groove of the sealing member, with the annular wing of the oil seal including a top face tightly abutting a bottom face of the inner annular wall of the sealing member, with the annular wing of the oil seal further including a bottom face tightly abutting a top face of the second flange, with a bottom of an outer side of the annular block of the oil seal including a slant face corresponding to the slope of the annular wall, with the slant face pressed by the slope of the annular wall of the second flange of the body, and with the annular block having an inner wall face tightly abutting an outer wall face of the inner annular wall of the sealing member.