JPH10205676A - Seismic saddle water faucet - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent the attachment part of a water supply pipe from being destroyed even if the ground changes due to an earthquake or the like act on a saddle faucet. In a saddle water tap, a connecting portion between a water tap and a water supply pipe is formed as a bent sleeve which is bent substantially at right angles between a water tap and a water supply pipe connection side. The tap end 7A is sealed around the opening 5G of the casing of the water tap 5 so as to be slidable in the axial direction and rotatably supported around the shaft, and the feed pipe end 7B is connected to the end of the four feed pipes. A connectable pipe joint 7C is provided and configured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an earthquake-resistant saddle water tap.

[0002]

2. Description of the Related Art As a water tap for branching a water supply pipe from a water pipe to each customer, a saddle water tap 1 as shown in FIG. 4 is used.

[0003] The saddle tap 1 is connected to a water pipe 2 (FIG. 5).
Consists of a semi-circular upper saddle 1A and a semi-circular lower saddle 1B along the outer circumference of the vehicle. A water tap 5 is attached to the upper saddle 1A, and the upper and lower saddles are fastened with fasteners 6 (FIG. 5) such as bolts and nuts. It is structured to be.

[0004] To attach the saddle tap 1, a ring-shaped waterproof rubber 5 C is fitted around the water inlet 5 A of the tap 5, as shown in FIGS. And apply the lower saddle 1B from the bottom of the water pipe 2,
Both are strongly tightened with fasteners 6 such as bolts and nuts, then the cap 5E of the water faucet 5 is removed, and a piercing tool (not shown) is inserted therefrom to pierce the water intake hole 3, and finally to each customer. A water supply pipe 4 was installed.

[0005] In the figure, reference numeral 5B denotes an open / close valve of the water faucet 5, which controls the water stoppage between the opening of the through hole for inserting the piercing tool and the attachment of the cap 5E after the piercing and the water stoppage and water supply to the water supply pipe 4. Is what you do.

[0006]

The saddle tap 1 is usually buried underground together with the water distribution pipe 2 and the water supply pipe 4.

For this reason, when the ground changes due to an earthquake or the like, there is a problem that the saddle tap 1 is easily affected by the fluctuation and a water leakage accident is likely to occur. For example, when the ground fluctuates due to an earthquake or the like as shown in FIG. 6, the water distribution pipe 2 and the water supply pipe 4 are often arranged in a nearly right-angled relationship, and thus the water supply pipe of the water faucet 5 indicated by an arrow. A large force combined with bending and torsion concentrates on the 4 mounting portion 4A.

On the other hand, the water tap 5 and the water supply pipe 4 are
Since it is fixed to the rigid body by A or the like, the thread joint is broken by the concentration of the stress and the water supply pipe 4 comes off, or the water supply pipe 4 itself breaks and breaks, causing a water leakage accident.

[0009] Further, since such a water leak accident occurs all at once in the surrounding area where the earthquake occurs, there is a problem that a large amount of water is wasted due to the water leak, and a great deal of labor and time are required for subsequent recovery.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem. Even if a saddle water faucet receives stress concentration due to ground fluctuation due to an earthquake or the like, it does not leak due to its influence. It is intended to provide a seismic saddle faucet.

[0011]

That is, the seismic-resistant saddle water tap of the present invention comprises an upper saddle and a lower saddle along the outer periphery of a water distribution pipe, and the upper saddle is bored in the pipe wall of the water distribution pipe. In a saddle water faucet provided with a water faucet connecting an intake hole and a water supply pipe, a connection portion between the water faucet and the water supply pipe is bent substantially at a right angle between the water faucet side and the water supply pipe connection side. A water tap side end is sealed around the opening of the water tap casing, is slidable in the axial direction, and is supported rotatably around the shaft. A pipe joint connectable to a pipe end is provided.

Therefore, the bent sleeve which forms the connection with the water supply pipe can slide in the axial direction at the water faucet portion and can rotate around the axis, so that the bending or twisting between the water distribution pipe and the water supply pipe is performed. Even if the force in the torsion direction acts, they are eliminated by the relative movement with respect to each axis, and the stress at the hydrant is eliminated.

[0013]

Next, an embodiment of the present invention will be described. FIG. 1 is a sectional view showing an embodiment of the present invention,
FIG. 2 is a plan view of the same, and FIG. 3 is a front view of the same.

1 to 3, reference numeral 1 denotes an earthquake-resistant saddle water tap, which has the same structure as the conventional one except for the structure of the water tap 5 and the sleeve 7 for connecting the water supply pipe 4. The detailed description is omitted only by showing the same reference numerals shown in FIG.

A feature of this embodiment is that a connecting portion between the water faucet 5 and the water supply pipe 4 is a bent sleeve 7 which is bent at substantially right angles between the water faucet side and the water supply pipe connection side. The water faucet side end 7A is sealed around the opening 5G of the casing of the water faucet 5 so as to be axially slidable and rotatably supported around the shaft. A pipe joint 7C that can be connected to the pipe end is provided and configured.

In the above, a member for sealing the outer periphery of the opening 5G of the casing and the bent sleeve 7 is a sealing rubber ring which comes into contact with the end face of the cylindrical valve 5B in the water tap 5 via the stopper ring 5H as shown in the figure. 5D and push wheel 5
The push ring 5F is fixed to the inner surface of the opening 5G of the casing by screw fitting.

It should be noted that a flange (not shown) is provided on the outer surface of the opening 5G of the casing, and the pressing ring 5F
May be fastened to the flange portion with bolts and nuts. The pipe joint 7 on the water supply pipe connection side 7B of the bent sleeve 7
C is a threaded joint similar to the pipe joint of the water tap 5 of the conventional example.

The water tap 5 in the above is integrated with the upper saddle 1A in order to minimize the amount of protrusion from the outer periphery of the water distribution pipe 2. In FIG. 3, reference numeral 3A denotes a rust-preventive ring fitted to the inner surface of the water intake hole 3 to prevent rust on the pipe wall exposed by piercing the water intake hole 3, and to supply red water even if rust occurs. This prevents the inflow into the pipe 4.

The annular water-stop rubber 5C shown in FIGS. 1 and 2 has a margin d around the water passage hole 3 so that a water-tight seal can be maintained even when the saddles 1A and 1B move due to ground fluctuation.
It has a structure to have. Reference numeral 7D in FIG. 1 denotes an annular projection for preventing the bent sleeve 7 from coming out, and 5K in FIGS. 1 and 2 denotes a seal rubber for sealing between the cylindrical valve 5B and the inner surface of the water faucet casing.

Next, the operation and the like of the earthquake-resistant saddle water faucet 1 of the present invention will be described. First, the cylindrical valve 5B is inserted into the water faucet 5 casing, and the water faucet side 7 of the bent sleeve 7 is inserted.
A is inserted into the cylindrical valve 5B.

Next, the stopper ring 5H and the sealing rubber ring 5D are inserted in this order from the water tap side 7B of the bent sleeve 7 and positioned at the opening 5G of the water tap casing. Then, the push ring 5F similarly inserted is fixed to the opening 5G of the water faucet 5 casing, and the sealing rubber ring 5D is compressed and fixed watertight.

The axial crossing relationship between the water distribution pipe 2 and the water supply pipe 4 is such that the water tap side 7A of the bent sleeve 7 is along the pipe axis of the water distribution pipe 2 as shown in FIGS. . Therefore, there is an axial fluctuation in the water distribution pipe 2 due to the ground fluctuation, and the water supply pipe 4
When the influence is small, the displacement of both is absorbed by the sliding movement of the bent sleeve 7 on the water tap 7A side, and the stress is eliminated.

When the ground changes over two directions, up and down, the bending sleeve 7 is bent at a substantially right angle, so that the vertical movement of the water supply pipe 4 is converted into a rotational movement, and each of the movements is preceded by a sliding movement. As in the case of the dynamic movement, since it is allowed in the casing of the water faucet 5, the stress due to the displacement of the ground is eliminated, and breakage at the water faucet portion is prevented.

[0024]

As described above, according to the present invention, the saddle water tap buried underground has a connection portion with the water supply pipe slidable in the axial direction and rotatable around the shaft. Because it is supported, even if there is relative fluctuation of the ground due to the earthquake, excessive stress does not occur at the connection part of the water distribution pipe and the water supply pipe, and damage caused by these can be prevented, and water leakage accidents are significantly reduced Has an effect that can be.

[Brief description of the drawings]

FIG. 1 is a side sectional view of an upper saddle according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view according to the embodiment of the present invention.

FIG. 3 is a plan view of an upper saddle.

FIG. 4 is an explanatory perspective view of a conventional example.

FIG. 5 is a sectional view of a conventional example.

FIG. 6 is an explanatory diagram of displacement during an earthquake.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Saddle water tap 1A ... Upper saddle 1B ... Lower saddle 2 ... Water pipe 3 ... Water intake hole 4 ... Water supply pipe 5 ... Water tap 5A ... Water inlet 5C ... Ring-shaped waterproof rubber 5D ... Seal rubber 5F ... Press ring 5G ... Opening 5H ... Stopper ring 6 ... Fastener 7 ... Bending sleeve 7A ... Dispenser side end of bending sleeve 7B ... Water pipe side end of bending sleeve 7C ... Pipe joint

Claims (1)

[Claims] 1. A saddle comprising an upper saddle and a lower saddle along the outer periphery of a water distribution pipe, and a water tap provided on the upper saddle for connecting a water intake hole formed in a pipe wall of the water distribution pipe and a water supply pipe. In the water faucet, a connecting portion between the water faucet and the water supply pipe is a bent sleeve bent at a substantially right angle between the water faucet side and the water supply pipe connection side, and the water faucet side end is the water faucet. It is characterized by being provided with a pipe joint which can be connected to the water supply pipe end at the water supply pipe side end, the circumference of which is sealed at the opening of the casing, slidable in the axial direction and rotatably supported around the axis. Quake-resistant saddle water tap.