A fluid coupler, comprising:
- a body having a first end and a second end, with a fluid passage extending through the body between the first end and the second end, the first end of the body being provided with a docking platform having a docking surface, the docking surface having an opening in communication with the fluid passage and provided with at least one interlocking latch and at least one latch groove arranged circumferentially around the opening in a staggered manner, wherein an outer periphery of the at least one interlocking latch and the at least one latch groove is provided with a safety pin hole and a positioning hole, a latch tongue slot and a latch tongue receptacle are further provided between the safety pin hole and the positioning hole, and the latch tongue slot is arranged adjacent to the latch tongue receptacle;
- a support portion annularly disposed around the first end of the body and positioned adjacent to a side of the docking platform facing away from the docking surface, the support portion having a first mounting surface and a second mounting surface, the first mounting surface being adjacent to the side of the docking platform facing away from the docking surface and perpendicular to the docking surface of the docking platform, the second mounting surface being located on a side of the support portion facing away from the docking platform and perpendicular to the first mounting surface, the support portion having a limiting cavity and a latch pin hole therein, wherein the limiting cavity extends axially through the support portion between the second mounting surface and the docking surface and is in communication with the safety pin hole, and the latch pin hole opens at the first mounting surface, extends in a direction perpendicular to the first mounting surface, and is in communication with the limiting cavity;
- a valve assembly comprising a valve ball, an upper valve body, and a lower valve stem, wherein the valve ball is pivotally mounted within an internal space of the body via one end of the upper valve body and the lower valve stem, the valve ball having a passage and configured to be driven to rotate by the upper valve body;
- a switch member disposed on the first mounting surface of the support portion, the switch member comprising a handle and a latch tongue, the handle having a pivot connection portion, the latch tongue being connected to the handle via the pivot connection portion, the pivot connection portion being provided with a shaft hole therethrough, the handle having a bottom surface defined with a limiting groove, wherein the upper valve body has another end fixedly disposed within the shaft hole, enabling the valve ball to rotate in conjunction with the rotation of the switch member;
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- an interlocking mechanism comprising a safety pin, a spring, and a latch pin, the safety pin comprising a main body portion, a front end cylinder, and a conical portion, the main body portion having an outer periphery provided with a safety pin annular groove, the main body portion being received within the limiting cavity, the front end cylinder extending from the main body portion and being inserted into the safety pin hole, the main body portion having an outer diameter matching an inner diameter of the limiting cavity, the front end cylinder having an outer diameter smaller than the outer diameter of the main body portion and matching an inner diameter of the safety pin hole, the conical portion being located at a front end of the safety pin and capable of protruding beyond the docking surface of the docking platform, the spring being received within the limiting cavity with one end abutting a bottom wall of the limiting cavity and another end abutting a rear end of the safety pin, wherein the latch pin is movably received within the latch pin hole in a direction perpendicular to an axis of the limiting cavity, the latch pin comprising a limiting portion and a locking portion, the limiting portion being disposed at one end of the latch pin and having a shape matching the limiting groove of the handle, and the locking portion being disposed at another end of the latch pin and having a shape matching the safety pin annular groove.