Connection structure for valve and joint in air piping

Provided is a connection structure for connecting a housing 2 for a valve to a joint 1 via a tube. At least one of the housing 2 for a valve and the joint 1 comprises a resin. The housing 2 for a valve has formed therein: a connection hole 22 for inserting and connecting the joint 1; and a pin insertion hole 25 bored from the outer surface of the housing 2 in a direction orthogonal to the axial direction of the connection hole 22 so as to pass through the connection hole 22. An annular groove 3 is formed on the outer circumferential surface of the joint 1 in the circumferential direction. A pin 5 is inserted from the pin insertion hole 25 on the outer surface of the housing 2 while the joint 1 is inserted in the housing 2. The pin 5 passes through the interior of the annular groove 3 provided to the joint 1 and locks to the joint 1. 本发明涉及空气配管中的阀与接头的连接机构，其用于经由接头(1)将管与阀的壳体(2)连接，阀的壳体(2)以及接头(1)中的至少方由树脂构成，在阀的壳体(2)形成有：连接孔(22)，其用于供接头(1)插入并连接接头(1)；以及销插孔(25)，其从壳体(2)的外表面沿与所述连接孔(22)的轴向正交的方向贯穿设置，且贯通所述连接孔(22)，在接头(1)上沿外周面的