JP3096653U - Rubber ring mounting structure for fittings - Google Patents

Abstract

(57) [Summary] (Corrected) [Purpose] A pipe joint in which a rubber ring is press-fitted into the fitting section between the male pipe end whose outer peripheral surface is almost flat and the female pipe end whose outer opening slope is attached to the inner peripheral surface. In the part, the rubber ring is attached to the inner peripheral surface of the female pipe end, to prevent excessive compression of the rubber ring to prevent twisting and tearing of the rubber ring and insufficient fitting of the male pipe end, Also provided is a new rubber ring mounting structure for a pipe joint portion that can continue to reliably perform water sealing even if the male pipe end and the female pipe end are displaced in a direction away from each other due to vibrations or the like after pipe formation. The purpose is to: In a pipe joint in which a rubber ring 3 is press-fitted into a fitting portion between a male pipe end 4 whose outer peripheral surface is substantially flat and a female pipe end 2 which is provided with an outwardly open slope on the inner peripheral surface, the rubber ring is female. A rubber ring mounting structure for a pipe joint, wherein the rubber ring is mounted on an inner surface of a pipe end to prevent excessive compression of a rubber ring.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to a rubber ring mounting structure for a pipe joint.

[0002]

[Prior art]

  For fitting the male pipe end such as a box culvert into the female pipe end and connecting it, When a rubber ring is press-fitted into the fitting gap, the rubber ring is conventionally fitted on the outer peripheral surface of the male pipe end. It's what I've been wearing.

[0003]

[Problems to be solved by the device]

  However, for box culverts, etc. If a rubber ring is attached to the outer peripheral surface of the male pipe end that is formed without inclination, Because the gap between the two ends becomes smaller when they are fitted into the inner peripheral surface of the attached female pipe end. As a result, the rubber ring excessively compresses as the fitting progresses, causing twisting and tearing. Insufficient fitting of the pipe end may occur, and the compression of the rubber ring may be different depending on the fitting position. Therefore, there is a problem that the function of water sealing becomes unstable.

[0004]

[Means for Solving the Problems]

  The present invention uses a rubber ring at the end of a female pipe at a pipe joint such as a box culvert. Inserts are attached to the outside of the peripheral surface, and a rubber ring intervenes even when the male pipe end is being inserted. By keeping the gap width of the position almost constant, excessive compression of the rubber ring is prevented. , I tried to solve such a problem.

[0005]

[Embodiment of device]

  A concrete pipe 1 such as a box culvert is located outside the inner peripheral surface 2a of the female pipe end 2. Put the base part 3a of the rubber ring 3 in advance in the rear part and 1a by re-molding, and the female pipe end 2 is provided with an outer opening inclined inner peripheral surface 2a as shown in FIG. 1 (a). The rubber ring 3 is insert-attached to the outer side of the. Outer half 3 of rubber ring 3 b protrudes from the inner peripheral surface 2a and is exposed. 4 is a male pipe end whose outer peripheral surface is almost flat. is there.

[0006]   As shown in FIGS. 2 (a) and 2 (b), a male pipe end 4 such as a box culvert is formed into a conduit. For insertion into the female tube end 2 of the next culvert, and rubber is inserted in the gap 5 between them. The exposed portion 3b of the wheel 3 is compressed and interposed for water sealing.

[0007]

[Effect of device]

  As described above, according to the present invention, a rubber ring is attached to the inner peripheral surface of the female pipe end that is inclined outward. Since it is attached, the outer peripheral surface is made almost flat and the outer opening is not inclined. Even if the male pipe end is inserted for connection, the rubber ring is Since it does not compress excessively, there will be no twisting or tearing of the rubber ring. Also, the water sealing function becomes unstable due to insufficient fitting of the male pipe end and the strength of compression of the rubber ring. The effect is that it is reliably prevented.

[0008]   Even if the male pipe end and the female pipe end move away from each other due to vibrations etc. Since the intervening gap width of the ring does not change, the effect of maintaining a predetermined compression state and continuing water sealing Cause

[Brief description of drawings]

FIG. 1 (a) is a cross-sectional view showing an example of a concrete pipe of the present invention, and FIG. 1 (b) is a front view of the female pipe end.

2A is a partially enlarged cross-sectional view showing a state before a male pipe end is inserted into an adjacent female pipe end, and FIG. 2B is a partially enlarged cross-sectional view showing the same inserted state.

[Explanation of symbols]

1 is a concrete pipe 2 is the female tube end 3 is a rubber ring 3a is the base 3b is a display part 4 is the male tube end 5 is the gap

Claims (2)

[Scope of utility model registration request] 1. A pipe joint in which a rubber ring is press-fitted into a fitting portion between a male pipe end having a substantially flat outer peripheral surface and a female pipe end having an outer opening inclined on an inner peripheral surface, the rubber ring being a female pipe. A rubber ring mounting structure for a pipe joint, which is attached to the inner surface of the end to prevent excessive compression of the rubber ring. 2. The rubber ring mounting structure for a pipe joint portion according to claim 1, wherein the rubber ring is insert-mounted on the inner surface of the female pipe end.