Fluid connector

A fluid connector comprising:

• a shell having a fluid channel and an accommodating hole;
• a ball valve accommodated in the shell and having a through hole;
• a control element arranged outside the shell for controlling the ball valve to rotate between a closed position and an open position;
• and
• a pin member and a resilient member both arranged in the accommodating hole;
• wherein
• the shell has an engagement hole;
• the pin member is moveable between a first position extending forward out of the accommodating hole and a second position retracted in the accommodating hole;
• when the fluid connector abuts a matching connector and is rotated such that the pin member corresponds to an engagement hole of the matching connector, the pin member is pushed by the resilient member and is positioned at a third position extending into the engagement hole;
• the rear end of the pin member forms an extending portion that extends into the control element;
• the control element has a stopper that blocks the extending portion and a pass groove for the extending portion to pass through;
• when the pin member is positioned at the first position or at the second position, the extending portion corresponds to the stopper and the control element cannot be rotated to open the ball valve;
• and
• when the pin member is positioned at the third position, the extending portion corresponds to the pass groove, and the control element is free of restriction by the extending portion and is able to control the ball valve to rotate.