Patent ID: 9702489
Date: 2017-07-11
CPC Classifications: F16L

Claim:
1. A pipe joining structure for joining a pipe disposed to extend along an equipment housing to a fluid passage of the equipment housing by bending an end portion of the pipe about 90 degrees to form a bend portion having a tip and a straight portion, the pipe joining structure comprising: a stay including a sheet member having a thin and flat shape with a central portion, the sheet member including a pipe insertion hole provided in the central portion and a peripheral portion extending in a radial direction from a boundary of the pipe insertion hole, the peripheral portion including a screw insert hole for fixing the stay to the equipment housing, and a tubular member integrally formed with the sheet member, the tubular member including a tubular projecting portion extending axially from the boundary of the pipe insert hole of the central portion of the sheet member for insertion into the fluid passage of the equipment housing; the tubular projecting portion having an upper end joined to the boundary of the pipe insertion hole, a bottom end, a middle portion provided axially between the upper and bottom ends of the tubular projecting portion, an intermediate projecting portion extending outwardly in a radial direction from the middle portion of the tubular projecting portion member, and a spool including the intermediate projecting portion; and an O-ring is fitted within the spool of the tubular projecting portion, wherein: the tip of the pipe is fitted within the pipe insert hole of the central portion of the stay and into the tubular projecting portion of the tubular member, the bottom end of the tubular projecting portion of the tubular member is inserted into a spot-faced hole of the opening of the fluid passage of the equipment housing, and the sheet member of the stay is fixed to the equipment housing using the screw insert hole in the sheet member, thereby connecting the tip of the pipe to the equipment housing, and the O-ring provides a seal between the tubular projecting portion of the tubular member and the spot-faced hole.