JPH01141881U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 is a sectional view of a cleaning pipe connection structure according to an embodiment of the present invention, and FIG. 2 is a front view showing a low tank and toilet bowl installed in a unit bathroom together with a cleaning pipe. Figure 3 is a partially cutaway front view of the rubber packing in Figure 1;
The figure is an explanatory diagram for explaining the action of the rubber packing. FIG. 5 is a partially cutaway front view of a rubber gasket according to another embodiment of the present invention, and FIG. 6 is a sectional view of a connecting structure according to still another embodiment of the present invention. Fig. 7 is a cross-sectional view of a conventional water pipe connection structure, Fig. 8 is a partially cutaway front view of the rubber packing alone in Fig. 7, and Fig. 9 shows the problems of the conventional connection structure shown in Fig. 7. It is an explanatory diagram for explanation. 10: Cleaning pipe, 16: Discharge pipe, 17: Male thread, 28: Cap nut, 30: Female thread, 31: Bottom,
32: Rubber packing, 36: Middle part, 38: End part.

Claims (1)

[Scope of Claim for Utility Model Registration] The end of a first pipe constituting a drainage pipe, cleaning pipe, etc. in a sanitary equipment room such as a unit bathroom, and the end of a second pipe as a connected member. At the same time, the screw part on the inner surface of the side wall of the cap nut, which has been fitted in advance into the pipe body on the smaller diameter side, is screwed into the outer peripheral thread part of the pipe body on the large diameter side,
In addition, the elastic packing interposed between the end face of the small-diameter pipe body and the bottom face of the cap nut is tightened in the axial direction by both sides, thereby making the gap between the large-diameter pipe body and the small-diameter pipe body liquid-tight. In the connection structure configured to seal, the cross-sectional shape of the packing is a curved shape that widens outward in the direction perpendicular to the axis as it moves from the upper and lower intermediate portions in the axial direction toward both ends, and the packing is When the end surface of the tube on the small diameter side and the bottom surface of the cap nut are tightened in the axial direction, both ends in the axial direction are outward in the direction perpendicular to the axis, and the intermediate part is inward in the direction perpendicular to the axis. 1. A connection structure for water conductive pipes in a sanitary equipment room, characterized in that the pipes are respectively protruded and deformed in the opposite direction so as to come into close contact with the inner surface of the side wall of the cap nut and the outer surface of the small-diameter pipe body.