Locking member for a connection device for fluid transfer, this device and the locking method therefor

摘要

Locking member having a male end-piece having a collar, a female end-piece having a ring which receives the male end-piece, and two flaps configured to be pushed in through two apertures of the ring and which are blocked behind the collar following insertion of the male end-piece, each flap having an inner and outer faces connected to each other by front and rear faces, relative to the insertion of the male end-piece. Each flap has inclined portions formed on the front face and set back from a foremost portion of this front face and including a guiding portion connecting the foremost portion to the inner face and cooperating with the end of the male end-piece to guide insertion thereof, and a blocking portion connecting the foremost portion to the front face and blocking the flaps against front edges of the apertures to act counter to opening of the member.

主权项

1. Locking member configured to be provided on a snap-fitting connection device for fluid transfer comprising:
a male tubular end-piece having a collar and having a convergent and rounded connection end, and a female tubular end-piece which is surrounded and extended axially by a connection ring and which receives the male end-piece in a sealed manner, said member comprising-two resilient locking flaps which are joined together by a gripping head and which are capable of being pushed in transversely and in a reversible manner through two respective symmetrical apertures of the connection ring, then of being blocked by means of snap-fitting against and behind said collar following the complete insertion of the male end-piece into the female end-piece, wherein each flap includes a cross section which varies over the length thereof and two inner and outer faces which are connected to each other by two front and rear faces relative to the direction (A) of insertion of the male end-piece, and wherein each flap locally comprises inclined portions which are formed on the front face set back from a foremost portion of this front face and which comprise:
at least one inclined guiding portion which connects this foremost portion to the inner face and which is capable of co-operating with said end of the male end-piece which spreads the flaps from each other in order to guide the insertion of this end-piece until the collar thereof extends axially beyond these flaps, andat least one inclined blocking portion which connects this foremost portion to the remainder of the front face by extending away from the inner face, and which is capable of co-operating with the ring by blocking the flaps in a closed position axially against front edges of the apertures in order to oppose the opening of the member during operation.