JP2001304479A - Seismic saddle type snap tap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an seismic saddle type snap tap involving no risk of the snap tap corotating with a boring apparatus in the boring operation for a water diversion hole using a utility boring apparatus and not requiring even jig for exclusive use for a corotating cap. SOLUTION: The seismic saddle type snap tap is embodied in a dual structure consisting of an inner cylinder type valve box where the snap tap is fixed to a saddle and an outer cylinder type branch part to be fitted on the valve box rotatably. The valve box is composed of an inner cylinder part fixed to the upper saddle portion, a cap screwing part formed thereover, and a valve stem window and water passing hole formed penetratively in the side face of the inner cylinder part. The branch part is composed of an outer cylinder part to be fitted rotatably on the inner cylinder part of the valve box and a valve stem inserting part and joint part to be connected with the outer cylinder part. According to this constitution where the boring apparatus is installed on the cap screwing part, there is no risk that the boring apparatus corotates with the branch part at the time of boring operation.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention absorbs a ground reaction force in the event of an earthquake by enabling a water faucet to rotate,
The present invention relates to an earthquake-resistant saddle water faucet which can prevent damage to a saddle mounting portion of a water faucet and a joint of a branch pipe, an inner cylinder in which a water faucet is fixed to a saddle, and a perforating device is mounted, and The double structure of the outer cylinder rotatably fitted to the outside prevents the water faucet from rotating with the drilling device even when the branch hole is opened by the drilling device in the operation of attaching the saddle water tap. This is related to a seismic saddle water faucet with a structure.

[0002]

2. Description of the Related Art A saddle faucet is composed of a combination of a saddle for holding a water supply main pipe and a faucet fixed to the saddle in an upright state, and the saddle faucet is buried underground. Therefore, when an earthquake occurs, the ground reaction acts mainly on the water faucet. As a result, a problem has been pointed out in which a force in an inadvertent direction is applied to a mounting portion between the water faucet and the saddle and a joint between the water faucet and the branch pipe, and the portion is damaged and water leakage is caused.

In order to solve such a problem,
A seismic-resistant saddle faucet in which a water faucet is rotatably mounted on a saddle (also referred to as an earthquake-resistant saddle faucet) has been developed (see, for example, JP-A-10-205678). .

However, when opening a branch hole in the water supply main pipe, it is necessary to attach a drilling device to the water faucet with the cap removed, and then insert a drill for the drilling device through the inside of the water faucet. However, according to the above-mentioned conventional seismic type saddle faucet, since the faucet to which the drilling device is attached is rotatable, there is a problem that the drilling device and the faucet rotate together. Was. If the two rotate together in this way, not only can the branch hole not be opened, but the work becomes dangerous.

[0005] Therefore, in this kind of seismic type saddle faucet,
It is necessary to take measures to prevent co-rotation between the drilling device and the faucet. As a technique focusing on such a point, Japanese Patent Laid-Open No.
The invention described in Japanese Patent Application Laid-Open No. 1-230460 and Japanese Patent Application Laid-Open
There is an invention described in Japanese Patent No. 30462. That is, the former invention discloses that the water tap is rotatably attached to the upper saddle so that the water intake port of the water tap is rotatably attached to the upper saddle. And a stopper for limiting the rotation angle of the water faucet is provided on the rotary contact surface between the water faucet and the upper saddle. "

The latter invention also prevents the disadvantages of the former invention, namely, idle rotation (including reverse rotation not only at the time of drilling but also at the time of removing the drilling device) until the stopper of the water faucet and the stopper of the saddle abut against each other. The jig employs a configuration in which "a pair of two insertion pieces that can be fitted without a gap between the faucet side stopper and the saddle side stopper are provided on the opening / closing arm".

[0007]

However, in the former invention, there is still play in the rotation of the water faucet while the stoppers are in contact with each other as described above, and the handling is troublesome as pointed out in the publication. On the other hand, the latter invention also requires a dedicated jig, so that workability is not necessarily improved.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. An object of the present invention is to provide a water tap and a water piercing device even in a water piercing operation using a general-purpose piercing device. An object of the present invention is to disclose an earthquake-resistant saddle water faucet having a completely new structure that does not rotate together with an instrument and does not require a special jig for preventing co-rotation.

[0009]

In order to achieve the above object, according to the present invention, a water faucet has a double structure of an inner cylinder fixed to a saddle and an outer cylinder rotatably fitted to the inner cylinder. . In other words, in the present invention, the water faucet comprises a valve box accommodating a valve and a branch portion connecting the branch pipe, and the valve box is provided with an inner cylindrical portion fixed to the upper saddle and a cap screw formed on the upper portion thereof. Part, a water passage hole and a valve stem window formed through the side surface of the inner cylinder part, and the branch part is rotatably fitted to the inner cylinder part so as to be rotatable outside, and a joint connected thereto. And a valve stem insertion portion, and a means is used in which a perforation device can be attached to the cap screwing portion.

According to a second aspect of the present invention, in the above means, an annular groove is formed above the cylindrical portion of the valve box, and the branch portion is prevented from falling out of the valve box by a stopper ring fitted in the annular groove. Was used. Further, claim 3
In this method, the means for selectively forming the water passage hole and the valve stem window formed in the outer periphery of the inner cylindrical portion of the valve box into an elongated hole shape was selectively used.

[0011]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an exploded perspective view of an earthquake-resistant saddle water faucet according to one embodiment of the present invention, in which 1 is an upper saddle, 2 is a lower saddle, and 3 is a diversion hole formed in the upper saddle 1. Reference numeral 11 denotes a bush to be fitted in, 4 denotes a water tap attached to the upper saddle 1, 5 denotes a ball valve accommodated in the water tap 4, 6 denotes a cap of the water tap 4, and 7 denotes a watertight seal. The upper saddle 1 and the lower saddle 2 are bolted to each other while holding a water supply main pipe (not shown).
-Fastened by the nut 9. Reference numeral 10 denotes a saddle packing that communicates with the branch port 11 of the upper saddle 1 from the back side of the bush 3 and is in close contact with the outer surface of the water supply main pipe to prevent water leakage.

The water tap 4 is roughly composed of a valve box 41 for accommodating the ball valve 5 and a branch portion 45 for connecting a branch pipe (not shown). The valve box 41 includes the ball valve 5
, A flange portion 43 corresponding to the flange receiving portion 12 of the upper saddle 1 at a lower portion thereof, and a cap screw portion 44 capable of screwing the cap 6 at an upper portion of the inner cylinder portion 42. Become. As will be described later, the cap screwing portion 44 can also fix a drilling device at the time of drilling a water outlet into a water supply main pipe. On the side surface of the inner cylindrical portion 42, a water hole 4 communicating with the branch port 11 of the upper saddle 1 via the ball valve 5 is provided.
4a and a valve stem window 44b through which the valve stem of the ball valve 5 can protrude from the inside are formed in an elongated hole shape. Further, two ring grooves 44c and 44d are formed above the water passage hole 44a and the valve stem window 44b in the inner cylindrical portion 42, and one ring groove 44e is formed below the two. Of these, the uppermost annular groove 4
4c is a groove for fitting the stopper ring 13, and the remaining two annular grooves 44d and 44e are grooves for fitting the O-ring 14. Here, the stopper ring 13 has a diameter that comes into contact with an outer cylindrical portion 46 of the branch portion 45 described later.

On the other hand, the branch portion 45 is provided in the inner cylindrical portion 4 of the valve box 41.
An outer tube 46 is rotatably fitted to the outer tube 2, a joint 47 of a branch pipe (not shown), and a valve stem insertion portion 48 for enabling the valve stem to be operated from outside. The outer cylinder portion 46 is set to be rotatable in a state of being fitted to the inner cylinder portion 42. However, if a gap is formed between the two tubes 42 and 46, the gap causes inadvertent pressure loss due to water separation. It is preferable that the outer cylindrical portion 46 has such a size that the outer cylindrical portion 46 is closely fitted to the inner cylindrical portion 42 because there is a possibility of water leakage or the like. Here, the outer cylindrical portion 46 is held in a watertight manner by a packing such as the O-ring 14.

On the other hand, the ball valve 5 is composed of a ball 51, a pair of upper and lower ball seats 52
1 and a combination of a valve stem 54 integrated with the valve stem 54.
Is operated to switch between passing water and stopping water.

To assemble the seismic saddle water tap having the above structure, first, as shown in FIG.
The bush 10 is screwed into the lower part of the valve box 41 and the ball valve 5 is fixed.
To the flange receiving portion 12 of the upper saddle 1
Fix using The attachment of the upper saddle 1 and the lower saddle 2 is as described above, and there is no difference from the conventional one. Illustration of the valve stem 54 is omitted.

After the valve box 41 is attached to the upper saddle 1 in the above-described manner, the branch portion 45 is externally fitted to the valve box 41 as shown in FIG. Then, if the cap 6 is attached to the cap screw portion 44 of the valve box 41, the assembly is completed.
At this time, the upper edge of the branch portion 45 has the stopper ring 1.
The contact with the valve box 3 prevents the valve box 41 from coming off.

Next, the procedure for using the saddle water tap will be described. First, in order to form a water outlet in the water supply main pipe, the state shown in FIG.
With the cap 6 not attached, the valve box 4
A piercing device is attached to the first cap screw portion 44. When the installation is completed, a water distribution hole can be formed in the water supply main pipe by inserting and driving the drill of the drilling device. At this time, since the drilling device is attached to the valve box 41 fixed to the upper saddle 1, the water tap 4 does not rotate when the drill is driven.

Next, the operation after the attachment of the saddle water tap to the water supply main pipe and the completion of the water outlet opening will be described. The normal usage procedure is the cap screwing part 4 of the faucet 4
4, a cap 6 is attached, and a joint 4
Connecting a branch pipe to 7 is no different from the conventional one. On the other hand, when an earthquake occurs, a ground reaction force acts on the water faucet 4 that is particularly protruding. But,
In the saddle water tap of the present invention, the water tap 4 is connected to the valve box 41 and the branch portion 4.
5 and the branch portion 45 is rotatably fitted to the valve box 41 so that the ground reaction force due to the earthquake is absorbed by the rotation of the branch portion 45.

As described above, in the present embodiment, the valve box 4
1, the communication between the water hole 44a and the branch port 11 of the upper saddle 1 via the ball valve 5 is impeded even if the branch part 45 is rotated. The water supply condition is not maintained. In addition, since the valve stem window 44b is also elongated, the movement of the valve stem 54 during rotation of the branch portion 45 is also permitted, and the above-described ground reaction force absorption is ensured. Further, the valve rod 54 can be normally operated even after the rotation.

In the above embodiment, the valve box 41 is fixed to the upper saddle 1 by a so-called flange method, but the fixing method of the valve box 41 is not limited to this. For example, the valve box 41 may be fixed to the upper saddle 1 by a screw. What is needed in the present invention is that the upper saddle 1 must be so strong that the valve box 41 does not rotate together with the drilling device during operation.
It is fixed to.

In the above embodiment, the stopper ring 13 fitted to the valve box is used to prevent the branch portion from coming off. However, another means may be used.

[0022]

As described above, according to the present invention, since the water tap is constituted by the valve box fixed to the saddle and the branch portion rotatably fitted to the valve box, the earthquake When the ground reaction force is generated, the branch portion rotates and absorbs it, thereby preventing damage to each part and water leakage. Further, since the piercing device is attached to the valve box fixed to the saddle, the piercing device does not rotate together with the water tap when the piercing device is driven.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of an earthquake-resistant saddle water tap according to an embodiment of the present invention.

FIG. 2 is an explanatory view of the assembly.

FIG. 3 is an explanatory view of the further assembly.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper saddle 2 Lower saddle 3 Bush 4 Water tap 5 Ball valve 6 Cap 7 Watertight seal 8 Bolt for fastening saddle 9 Same nut 10 Saddle packing 11 Branch of upper saddle 12 Flange receiving part 13 Stopper ring 14 O-ring 41 Valve Box 42 Inner cylinder part 43 Flange part 44 Cap screw part 44a Water passage hole 44b Valve stem window 45 Branch part 46 Outer cylinder part 47 Joint part 48 Valve rod insertion part 51 Ball 52/53 Ball seat 54 Valve rod

Claims (3)

[Claims] 1. A saddle water tap provided with a water tap for connecting a branch pipe and stopping water in a saddle sandwiched and fixed to a water supply main pipe, wherein the water tap includes a valve box containing a valve and a branch pipe. The valve box has an inner cylinder portion fixed to the upper saddle, a cap screw portion formed on the upper portion, a water hole and a valve stem window formed through the inner cylinder portion side surface. The branch portion comprises an outer cylinder portion rotatably fitted to the inner cylinder portion, a joint portion and a valve stem insertion portion connected to the outer cylinder portion. A seismic-resistant saddle water tap, which can be attached. 2. An anti-seismic saddle diversion according to claim 1, wherein an annular groove is formed above the cylindrical portion of the valve box, and the branch portion is prevented from falling out of the valve box by a stopper ring fitted into the annular groove. plug. 3. The anti-seismic saddle water tap according to claim 1, wherein the water hole and the valve stem window are formed in an elongated hole shape.