| CPC F16L 37/34 (2013.01) [F16L 29/04 (2013.01)] | 9 Claims |
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1. A pipe coupling structure for a fluid transportation system, comprising:
a first coupler including:
a fixing seat having an annular receiving groove formed on one side thereof, and defining a first penetrating hole axially extending through the fixing seat;
a first shell including a first connection section, a second connection section, and a mounting bore formed on the first connection section; the second connection section having a through hole located opposite to the mounting bore, and the through hole extending axially into the second connection section to form a first shaft moving space having a variable diameter gradually increased axially inward from the through hole; the first connection section is received in the annular receiving groove, and the second connection section being extended through the first penetrating hole to assemble to the fixing seat;
a first shaft holder being correspondingly connected to the mounting bore of the first shell; the first shaft holder including a first shaft section and a first shaft hole and having a plurality of first connecting ribs extended and connected to between the first shaft section and the first shaft holder, so that a plurality of openings are formed between any two adjacent first connecting ribs; and the first shaft section having a first spring fitted therearound;
a first shaft including a first shaft body portion and a supporting base;
the first shaft body portion being inserted into the first shaft hole of the first shaft holder, and the supporting base closing the through hole on the first shell; and
a fixing cover including a covering section and a second penetrating hole extending through the covering section; and the fixing cover being correspondingly covered onto the annular receiving groove on the fixing seat; and
a second coupler including:
a second shell having a first end and a second end; the first end being formed into a second shaft section having a second shaft hole, and having a plurality of second connecting ribs extended from the second shaft section to the first end, such that a plurality of openings are formed between any two adjacent second connecting ribs; and the second end and the first end together defining a valve moving space between them;
a movable valve being movably mounted in the valve moving space and having a second through hole formed thereon; an end of the movable valve located opposite to the first end of the second shell being pressed against by a second spring; and the second spring having another end pressed against the first end of the second shell; and
a second shaft having two ends formed into a shaft head section and a fixedly connected base; the fixedly connected base having a connecting stem projected from an end thereof to insert into the second shaft hole on the second shell; and the shaft head section correspondingly closing the second through hole on the movable valve; and
wherein when the first and the second coupler are assembled together to form the pipe coupling structure, the second connection section of the first coupler is extended into and connected to the second coupler, and the first and the second shaft are connected end to end; and when the second connection section of the first coupler is pushed to move the movable valve deeper into the second coupler, the second shaft correspondingly extends through the movable valve to push the first shaft toward the first shaft holder and the through hole on the first shell is opened, so that the first and the second coupler are internally fluidly communicable with each other; and wherein since the first shaft moving space has the variable diameter gradually increased axially inward from the through hole, a fluid can flow therethrough more smoothly.
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