Mechanism for connecting valve and joint

Provided is a mechanism for connecting a valve and a joint, which is used in air piping and which connects a tube to the housing 2 of the valve through the joint 1. The housing 2 of the valve has formed therein a connection hole 22 in which the joint 1 is inserted for connection. The connection hole 22 has a snap ring fitting groove 23 in the inner peripheral surface thereof. The joint 1 has formed in the outer peripheral surface thereof a snap ring receiving groove 31. In a state in which the joint 1 is inserted in the housing 2, a snap ring 3 in the receiving groove 31 is fitted and located in the fitting groove 23. 本发明涉及阀与接头的连接机构，其用于经由接头(1)将管与空气配管中的阀的壳体(2)连接，在阀的壳体(2)上形成有用于供所述接头(1)插入并连接所述接头(1)的连接孔(22)，在该连接孔(22)的内周面具有止动环嵌入槽(23)，在接头(1)的外周面形成有止动环收容槽(31)，在接头(1)插入壳体(2)内的插入状态下，收容槽(31)内的止动环(3)嵌入到嵌入槽(23)中。