JPS61146681U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a pipe joint according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line -- in FIG. FIG. 4 is a longitudinal sectional view showing a modification of the present invention, FIG. 5 is a sectional view showing a modification of the key mounting part, FIG. 6 is a sectional view showing a modification of the key moderation mechanism, and FIGS. FIG. 8 is a sectional view showing a modification of the key holding mechanism. 1...First joint pipe, 1a...Small diameter pipe section, 1d, 1f
...stepped surface, 2...second joint pipe, 2d...protrusion, 3...stop ring, 3a...flange, 3c...notch, 4...collar, 5...key, 6...second O-ring, 8...first -O
ring.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A pair of resin joint pipes are connected to each other, both joint pipes are connected with a stop ring, and a key is used to prevent rotation of the stop ring, and one first joint The pipe is stepped with a small diameter pipe part at the tip thereof, and the small diameter pipe part at the tip is inserted into the through hole of the other second joint pipe, and the connection of either the first joint pipe or the second joint pipe is made. A plurality of protrusions are provided on the outer periphery of the end so as to protrude at predetermined intervals in the circumferential direction, and a retaining ring is rotatably attached to the outer periphery of the other connecting end, and each of the above-mentioned protrusions is provided on the inner peripheral surface of the connecting end of the retaining ring. A flange having a notch for insertion is formed, a protrusion is inserted into the notch, and a retaining ring is then rotated to engage the protrusion with the flange to connect both joint pipes, and the retaining ring is not attached. A key to be inserted into the notch is attached to the joint pipe so as to be slidable in the axial direction, the protrusion and the flange are engaged, and then the key is inserted into the notch to prevent the retaining ring from rotating. pipe fittings. (2) The pipe joint described in claim (1) for utility model registration is characterized in that a moderation mechanism is provided between the key and the joint pipe, and the key is selectively held in the notch insertion position and the removal position. pipe fittings. (3) In the pipe joint described in claim (2) for utility model registration, the moderation mechanism includes a moderation ball that is engaged and held in a joint pipe having a key, and a moderation hole for fitting the moderation ball provided in the key. A pipe joint characterized by: (4) In the pipe fitting described in any one of claims (1), (2), and (3) for utility model registration, it is stated that the pipe fitting having the above-mentioned key is provided with a stopper for regulating the key removal position. Characteristic pipe fittings. (5) In the pipe joint described in claim (1) for utility model registration, a first O-ring is interposed in the fitting part between the small diameter part of the first joint pipe and the through hole of the second joint pipe, and , a second O-ring is interposed between the connecting surface of the stepped end face of the first joint pipe and the connecting end face of the second joint pipe, and the second O-ring biases the joint pipe to A pipe joint characterized in that a protrusion and a flange of the retaining ring are elastically joined.