JP-2026075912-A - Saddle-type water splitter valve

JP2026075912AJP 2026075912 AJP2026075912 AJP 2026075912AJP-2026075912-A

Abstract

[Problem] To mitigate the load caused by an earthquake, suppress the displacement of the saddle-type water tap and the water distribution pipe, and prevent damage to joints, water supply pipes, etc. [Solution] The saddle-type water tap 100 comprises a water tap body 1 to which a water supply pipe is connected, a saddle 2 having a through hole 2c, and an annular first adapter 4 and a second adapter 5 positioned between the water tap body 1 and the saddle 2. The first adapter 4 has a saddle connecting portion 4c that screws into the through hole 2c. The second adapter 5 has an adapter connecting portion 5b that screws into the inner circumference of the first adapter 4 and a water tap connecting portion 5a that screws into the inner circumference of the water tap body 1. There is a rotation control mechanism that restricts relative rotation with the water tap body 1 when the rotational load acting between the first adapter 4 and the water tap body 1 is less than a predetermined value. The rotation control mechanism 60 comprises a first adapter 4 fixed to the saddle 2 and a stopper 6 that fixes the water tap body 1. [Selection Diagram] Figure 1

Inventors

浦須内祐二
高橋直也

Assignees

前澤給装工業株式会社
株式会社クボタ

Dates

Publication Date: 20260511
Application Date: 20241023

Claims (6)

The branch valve body to which the water supply pipe is connected, A saddle fixed to the outer circumference of a water pipe and having a through hole, An annular first adapter and a second adapter are positioned between the water distribution valve body and the saddle, A saddle-type water tap equipped with, The first adapter has a water tap loose fitting portion that is fitted to the outer circumference of the water tap body so as to be rotatable relative to it, and a saddle connecting portion that screws into the through hole, The second adapter has an adapter connecting portion that screws onto the inner circumference of the first adapter and a water tap connecting portion that screws onto the inner circumference of the water tap body, The first adapter has a rotation control mechanism that restricts the relative rotation between the loose fitting portion of the water distribution valve and the water distribution valve body when the rotational load acting between the water distribution valve body and the loose fitting portion of the water distribution valve is less than a predetermined value. The rotation control mechanism includes a first adapter fixed to the saddle and a stopper that secures the water distribution valve body. A water splitter valve with a saddle.
The stopper is, It consists of pins, It is inserted into a pin mounting hole formed axially from the outer circumferential surface of the annular first adapter, The axial tip of the aforementioned pin is positioned in contact with the first adapter-facing portion formed on the water distribution valve body. A saddle-type water tap according to claim 1.
The saddle mounting gasket is engaged with the second adapter. A saddle-type water tap according to claim 1.
The water distribution valve body is restricted from rotating by the stopper while retaining a range of rotation of 45 degrees or more in the tightening direction relative to the water distribution valve connection portion. A saddle-type water tap according to claim 1.
The cylindrical portion protruding from the outer circumference of the water distribution valve body is provided with an O-ring that contacts the O-ring contact portion formed on the outer circumference of the second adapter when the second adapter is inserted into the second adapter connecting portion formed on the water distribution valve body. A saddle-type water tap according to claim 1.
The branch valve body to which the water supply pipe is connected, A saddle fixed to the outer circumference of a water pipe and having a through hole, An annular adapter positioned between the water distribution valve body and the saddle, A saddle-type water tap equipped with, The adapter comprises a loose fitting portion for the water tap that is fitted to the outer circumference of the water tap body so as to be rotatable relative to it, a saddle connecting portion that screws into the through hole, a water tap connecting portion that screws into the inner circumference of the water tap body, and a rotation control mechanism that restricts the relative rotation between the loose fitting portion and the water tap body when the rotational load acting between the water tap body and the loose fitting portion is less than a predetermined value. The rotation control mechanism includes a first adapter fixed to the saddle and a stopper that secures the water distribution valve body. A water splitter valve with a saddle.

Description

This invention relates to a saddle-type branch valve installed at the point where a water supply pipe branches off from a water distribution pipe, such as a water main. A saddle-type branch valve connects to the water supply pipe via a fitting or similar connector, supplying water from the main water pipe or other distribution pipe to individual houses and other buildings. In recent years, earthquakes have become more frequent. Saddle-type water taps are at risk of shifting their mounting position when water pipes move during an earthquake. For example, if water pipes move during an earthquake, the tap may shift beyond the water-sealing component (saddle mounting gasket) that was covering the perforated hole in the pipe. Furthermore, during an earthquake, the water supply pipes are subjected to load, which could cause damage or displacement of the water supply pipes connected to the saddle-type branch valves. As a means of preventing the water distribution valve body and saddle from rotating during an earthquake and thereby suppressing water leakage, a water distribution valve with a saddle, as described in Patent Document 1, is known. The saddle-type water tap described in Patent Document 1 is equipped with a rotation-preventing member on the screw joint that secures the tap body and saddle, in order to prevent water leakage caused by rotation of the tap body and saddle during an earthquake. This rotation-preventing member consists of a pin, a hexagon socket set screw, or a seated set screw. Other types include integrated saddle-type water taps where the water supply pipe connection is integrated with the fitting, and saddle-type water taps with expandable and flexible structures, although these are not intended for earthquake resistance. These saddle-type water taps have the drawback of being structurally complex. Japanese Patent Publication No. 2023-22550 This is a front view showing a partial cross-section of a saddle-type water tap according to an embodiment of the present invention.This is a plan view of a saddle-type water splitter valve, showing the range of rotation of the valve body.This is an enlarged side view showing a partial cross-section of a saddle-type water tap.This is an enlarged cross-sectional view from IV-IV in Figure 1.This is an exploded front view showing a partial cross-section of a saddle-type water tap.This figure shows a first modified example of a saddle-type water tap according to an embodiment of the present invention, and is an enlarged side view showing a partial cross-section of the saddle-type water tap.This figure shows a first modified example of a saddle-type water tap according to an embodiment of the present invention, and is an exploded side view showing a partial cross-section of the saddle-type water tap.This figure shows a second modified example of a saddle-type water tap according to an embodiment of the present invention, and is an enlarged side view showing a partial cross-section of the saddle-type water tap. A saddle-type water splitter valve 100 according to an embodiment of the present invention will be described with reference to Figures 1 to 5. When describing the direction, the saddle-type water splitter valve 100 shown in Figure 1 will be considered the top, the pair of bolts B and nuts N will be considered the left and right, and the axial direction of the water distribution pipe P will be considered the front and back. Furthermore, since the saddle-type water splitter valve 100 is formed in a symmetrical shape overall, except for the water supply pipe connection part 1e of the water splitter valve body 1 and the valve rod 13, the explanation will mainly focus on one side, and the explanation of the other side will be omitted as appropriate. Also, parts with the same configuration will be given the same reference numerals, and their explanations will be omitted. ≪Saddle-type water splitter faucet≫ The saddle-type branch valve 100 shown in Figure 1 or Figure 3 is a branch valve used to branch off water supply pipes (not shown) that supply water to individual houses, etc., from a metal water distribution pipe P such as a water main. The saddle-type branch valve 100 comprises a branch valve body 1, a saddle 2, a band 3, a first adapter 4, a second adapter 5, a stopper 6, a rotation control mechanism 60, a first O-ring O1, a second O-ring O2, a pair of bolts B, and nuts N that are screwed onto the pair of bolts B, respectively. The saddle-type branch valve 100 has two adapters, consisting of the first adapter 4 and the second adapter 5, between the branch valve body 1 and the saddle 2. Furthermore, the saddle-type water splitter valve 100 includes a water shut-off mechanism 10 provided on the water splitter valve body 1, a saddle mechanism 20 for attaching the saddle 2 and band 3 around the water distribution pipe P, and a rotation control mechanism 60 that rotates when a load exceeding a predetermined amount is applied in the rotational direction betwe