JPH116576A - Base isolation type saddle snap tap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a base isolation type saddle snap tap of simple structure by connecting a bellows between a lower end part of a tap body of the saddle snap tap and an upper surface of a snap tap mounting part of a saddle band, and interposing a supporter surrounding the bellows. SOLUTION: Shaft holes 1b, 2c in a lower end part 1a of a tap body 1 and a saddle part 2b of an upper band 2a are connected to each other by a bellows 3 in an airtight manner. A supporter 4 consisting of the plastic is interposed in the space between the tap body 1 and the upper band 2a surrounding the bellows 3. When the snap tap is subjected to the initial earthquake wave, etc., the supporter 4 is first broken to keep the bellows 3 in a free condition. Then, the bellows 3 part is freely deformed and distorted to absorb the shock wave to bring the base isolation effect. The base isolation function can be realized only by connecting the upper band 2a of the saddle band 2 to the lower end part 1a of the tap body 1 by the bellows 3 in a watertight manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a saddle type water faucet for taking out a branch pipe from a water main pipe buried underground and the like. The present invention relates to a novel seismic isolation type saddle faucet for absorption or mitigation.

[0002]

2. Description of the Related Art A conventional saddle tap is fixedly attached to a water main or the like via a saddle band, and is often buried underground. Frequently, the water faucet was broken or the branch pipe was cut off due to the vibration of a large-scale construction.

[0003] In response to this, in recent years, it has been heard that the development of saddle faucets with a seismic or seismic isolation function has been urgently developed in various areas, but it seems that no finished product has yet been put on the market. .
However, the mainstream concept is to divide the main body of the water faucet into upper and lower bodies and form a spherical joint between the upper and lower parts, so that the upper body of the water faucet is on the lower body side which is fixed to the saddle side It seems to keep them free.

[0004]

However, the seismic type saddle water tap based on the above concept has many problems in maintaining the watertightness of the joint between the upper and lower bodies and preventing intrusion of earth and sand. It is presumed that there are problems such as the structure of this part being further complicated and the height of the water faucet itself being increased because the parts must be assembled.

The present invention has been completed by diligent, experimental and improved efforts to overcome the above-mentioned drawbacks of the slide method using spherical contact. Between the lower end of the main body of the plug and the upper surface of the water faucet mounting portion (the saddle portion of the upper band) of the saddle band,
For example, a means is used in which a bellows fixedly provided with upper and lower flanges is connected, and a supporter is interposed around the bellows.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described below in more detail with reference to the embodiments shown in the drawings. In the drawings, reference numeral 1 denotes a stopper main body of a saddle water tap, 2 denotes a saddle band, and 3 denotes the above stopper. A bellows for hermetically connecting between the lower end portion 1a of the main body 1 and the shaft holes 1b and 2c of the saddle portion 2b of the upper band 2a, and furthermore, a bellows 4 surrounds the bellows 3 and is interposed in the space between the plug main body and the upper band 2. It is a supporter made of plastic and the like.

The plug body 1 is fixed to a main pipe (P) such as a water pipe via a saddle band 2 so as to provide a continuous water supply. After making a branch hole in the main pipe in the state of, the branch pipe (p)
Have a known structure that can be connected. In the drawing, reference numeral 1b denotes a shaft hole passing through the inside of the plug body.

On the other hand, the saddle band 2 also has a base body of a structure conventionally known as a saddle band of this type of water faucet, and is provided on the upper surface of a saddle portion 2b raised at the center of an upper band 2a with a plug body. A shaft hole 2c which can communicate with one shaft hole 1b is provided through the shaft hole 1b.

Further, as shown in FIG. 1 which shows an example of the bellows 3, flanges 3a and 3b having through holes 3c and 3c at the center are respectively opposed to upper and lower ends of the bellows 3. The center of the through holes 3c is aligned with the center lines of the shaft holes 1b and 2c on the side of the plug body 1 and the upper band 2, and in this state they are watertightly bonded and fixed. A supporter 4 which is separately molded around the bellows 3 and has a certain breaking strength is attached to both upper and lower flanges 3a and 3b.
It is interposed in between. As shown in FIG. 2, for example, the supporter 4 is formed by dividing a cylindrical body formed of a plastic material into two parts in the axial direction, and a flange 4a at the united edge thereof.
The supporter 4 is suitably provided with ribs or holes 4c so that the supporter 4 can be buckled or crushed by a predetermined load or more.

In the present invention having the above construction, the opening distance (height) between the upper and lower flanges 3a and 3b of the bellows 3,
That is, the bellows 3 and the supporter 4 used therein
The length of the plug body 1 is not particularly limited, but if the amount of separation is small, the vibration absorbing function is reduced, and if it is too wide, the overall height of the plug main body 1 on the upper band 2a increases, which affects the construction surface and the like. The length of the bellows 3 is preferably in the range of 2 to 6 peaks because adverse effects are considered.

On the other hand, the bellows 3 for watertightly connecting the plug body 1 to the saddle portion 2b of the upper band.
Is not limited to the connecting means by the flanges 3a and 3b as described in the above embodiment, and the upper and lower ends of the bellows 3 are directly brazed or welded to the inner surface or the outer surface side of the portion to be bonded, or The same operation and effect can be obtained by means such as caulking through a sealing material.

Further, in the present invention, the supporter 4 is interposed around the outer circumference of the bellows 3 for the purpose of attaching the saddle water tap having the above-mentioned structure to a water main pipe (P) or the like, and thereafter the plug body 1 or the like. A drill is inserted through the shaft holes 1b and 2c to form a branch hole in the main pipe. The torque applied to the water faucet and the like at the time of this drilling is approximately 80 N · m · f × cm. In addition, in view of the fact that the breaking load at the connecting portion between the plug body 1 and the saddle band 2 is 35 K · N on average, the bellows 3 is distorted by the load at the time of drilling and an incorrect branch hole is formed. On the other hand, the supporter 4 buckles or crushes within the above-mentioned breaking load of a water faucet or the like to give a degree of freedom to the bellows so that a good external force absorbing function can be exhibited. It is.

Accordingly, the supporter 4 which meets the above-mentioned object is provided.
If so, the structure or shape is not limited to that of FIG. In FIG. 1, reference numeral 5 denotes a packing attached to each part, 6 denotes a plug of the water faucet 1, and 7 denotes a rust prevention sleeve mounted on a peripheral wall of the branch hole.

[0014]

As described above in detail, according to the seismic isolation type saddle water faucet according to the present invention, the bellows between the upper and lower flanges and the supporter interposed surrounding the bellows allow the conventional bellows. As in the case of the fixed saddle water faucet, it is possible to perform the drilling of the branch hole using the shaft hole of the plug body and the like, and to attach the rust prevention sleeve to the hole periphery of the branch hole, etc.
The supporter is destroyed by the initial seismic wave propagating in the ground with the branch pipe connected, and the bellows is kept free, so even if a larger seismic wave etc. acts, the bellows part is free. An extremely remarkable action and effect is obtained in that the vibration wave is surely absorbed by being deformed and distorted, and the breakage and damage of the branch pipe and the water faucet can be greatly reduced.

Further, the saddle tap according to the present invention only connects the upper band of the saddle band and the lower end of the plug body in a watertight manner by bellows, and does not require any internal structural change. If the bellows and the supporter are prepared, the bellows and the supporter can be applied to an old saddle water faucet with a simple operation and have a wide range of use.

[Brief description of the drawings]

FIG. 1 is a front view of a seismic isolation type saddle water faucet of the present invention, in which main parts are cut away.

FIG. 2 is a perspective view of a supporter.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plug body 1a Lower end part 1b Shaft hole 2 Saddle band 2a Upper band 2b Saddle part 2c Shaft hole 3 Bellows 3a Upper flange 3b Lower flange 3c Through hole 4 Supporter 4a Flange part 4b Bolt 4c Hole 5 Packing 6 minutes Faucet plug body 7 Rust prevention sleeve

Claims (1)

[Claims] The lower end of the plug body and the upper surface of the saddle at the center of the upper band of the saddle water tap are connected in a watertight manner by bellows, and a supporter is interposed between the plug body and the upper band surrounding the bellows. A seismic isolation type saddle tap.