Patent ID: 7946624

Claim:
A mounting structure for mounting a piping joint to an element with a through-hole formed therein such that the piping joint can rotate about an axis of the through-hole, the piping joint having a connection portion for connecting to a pipe or a tube, the mounting structure comprising: a flange provided on the piping joint and including a ring-shaped contact surface configured to be able to contact with a first surface of the element about a first end opening of the through-hole; and a plurality of hook portions extending in an axial direction from the flange for inserting into the through-hole; wherein: the hook portions can resiliently deform radially inward with respect to the axis of the through-hole when hooking ends of the hook portions pass through the through-hole; and the hook portions can return radially outward and the hooking ends can engage a second surface opposite to the first surface of the object opposite about a second end opening opposite to the first end opening of the through-hole after the hooking ends have passed through the through-hole.