WO2013098882A1

WO2013098882A1 - Plug for water supply pipe

Info

Publication number: WO2013098882A1
Application number: PCT/JP2011/007302
Authority: WO
Inventors: 宏大門
Original assignee: 株式会社大門
Priority date: 2011-12-27
Filing date: 2011-12-27
Publication date: 2013-07-04
Also published as: CN103282710B; JP5050218B1; CN103282710A; TW201326627A; TWI489050B; JPWO2013098882A1

Abstract

This plug for a water supply pipe comprises: a cylindrically shaped plug body, one end of which is closed; and a screw part that is provided so as to protrude from the surface of said closed one end of the plug body and that is inserted and screwed into a socket-side screw part. The plug is configured such that: the outer diameter of the plug body is formed larger than the outer diameter of the screw part; a through hole that penetrates from said one end surface of the plug body to the inside of the cylinder of the plug body is formed in said one end surface, which is formed annularly and located around the base part of the screw part with respect to the plug body; the plug comprises a gasket made of an annular elastic member having a predetermined thickness, the gasket being arranged in opposition to said annular, one end surface of the plug body; and a cylindrical gasket-support part is provided around said one end surface of the plug body, the gasket-support part covering the outer periphery of the gasket which is arranged in opposition to said one end surface of the plug body.

Description

Plug for water supply piping

The present invention relates to a plug for water supply piping, and more particularly to a plug for water supply piping used at the time of inspection of water supply piping.

Buildings such as buildings and single houses are provided with water supply pipes that supply drinking water and other domestic water. The water supply pipe is stretched around the wall of the building and is arranged so as to communicate with a faucet socket provided on a wall surface of a kitchen, a washroom, a bathroom or the like. And a faucet is attached to a faucet socket, The water supplied to the faucet socket installed in various places through this water supply piping will be discharged | emitted from a faucet.

And when water supply pipes are installed in a building, first, an inspection is performed to check whether water leaks occur in the pipes and whether appropriate water pressure is generated in the water supply. Specifically, this inspection is performed as follows.

First, as shown in FIG. 1, the faucet sockets 30 are respectively installed on the wall surfaces of the kitchen A, bathroom B, washroom C, and toilet D, and a water supply pipe 40 is connected to each faucet socket 30. Suppose that The two pipes 40 connected to the kitchen A, bathroom B, and washroom C are for water supply and hot water supply, respectively. Each faucet socket 30 is fitted with an inspection plug 101 (illustrated only in the toilet D) that closes the water supply outlet of the water supplied through the water supply pipe 40. In this state, the inspection pump 50 is connected to the side opposite to the faucet socket 30 side of the water supply pipe 40, and a constant water pressure is applied to the water supply pipe 40 by the inspection pump 50. Thereby, it is inspected whether water leakage occurs in the water supply pipe 40 or whether an appropriate water pressure is generated for water supply.

As the above-described

inspection plugs

101 and 201, for example, there is one disclosed in Patent Document 1, which will be described with reference to FIGS. First, the inspection plug 101 shown in FIG. 2 includes a main body 110 having a cylindrical outer shape and a tapered portion 111 provided integrally on one end side thereof. Specifically, the outer diameter of the main body 110 is formed larger than the inner diameter of the faucet socket 30 that is cylindrical. Further, the tapered portion 111 is formed so that the outer diameter of the tip portion is smaller than the inner diameter of the faucet socket 30 and the diameter gradually increases from the tip portion toward the main body 110 side. Further, a male screw portion is formed on the outer surface of the taper portion 111 so as to be screwed into a female screw portion 31 formed on the inner wall surface of the cylindrical faucet socket 30.

And, at the time of inspection, an elastic member 120 such as vinyl tape is wound around the taper portion 111 of the inspection plug 101 from above the male screw portion. In this state, the male screw portion of the tapered portion 111 is screwed into the female screw portion 31 formed on the inner wall surface of the faucet socket 30 that constitutes the water supply outlet of the water supply pipe 40 (see arrow Y101). Then, the vinyl tape 120 bites into the screwed portion between the male screw portion of the tapered portion 111 of the test plug 101 and the female screw portion 31 of the faucet socket 30, and the screwed portion is brought into close contact. Thereby, the water supply outlet can be blocked with the inspection plug 101 in a highly airtight state, and the water supply pipe 40 can be appropriately inspected.

The inspection plug 101 is removed from the faucet socket 30 after performing the inspection as described above. When the inspection plug 101 is removed, the male screw portion of the tapered portion 111 of the inspection plug 101 and the faucet socket 30 are removed. The vinyl tape 120 remains attached to each of the female screw portions 31. On the other hand, the inspection plug 101 can be reused, and the faucet socket 30 is used with a faucet attached. Therefore, the vinyl tape 120 attached to the male screw portion or the female screw portion 31 is used. It is necessary to remove. However, since the vinyl tape 120 bites into and adheres to the small gaps of the screw portions such as the male screw portion and the female screw portion 31, it is difficult to remove them cleanly, and there is a problem that the removal work takes time. .

On the other hand, Patent Document 1 proposes an inspection plug 201 having the structure shown in FIG. This inspection plug 201 includes a main body portion 201 having a cylindrical outer shape and a male screw portion 211 provided integrally on one end side thereof. Specifically, the outer diameter of the main body 210 is formed larger than the inner diameter of the faucet socket 30. Further, the outer diameter of the male screw portion 211 is formed with substantially the same diameter so that it can be screwed into the female screw portion 31 which is the inner diameter of the plug socket 30. Thus, since the outer diameter of the main body part 210 is formed larger than that of the male screw part 211, there is a step part (the male screw part with respect to the main body part 210) at the connecting portion between the main body part 210 and the male screw part 211. 211 is formed).

The inspection plug 201 includes an annular packing 220 that is in close contact with the stepped portion. The annular packing 220 has an inner diameter that is substantially the same as that of the male screw portion 211 and an outer diameter that is substantially the same as that of the main body portion 210. Furthermore, an annular cylindrical portion 221 that covers the outer surface of the annular packing 220 provided at the stepped portion is integrally provided on one end side of the main body portion 201.

At the time of inspection, the male screw portion 211 of the inspection plug 201 is screwed into the female screw portion 31 formed on the inner wall surface of the faucet socket 30 that constitutes the water supply outlet of the water supply pipe 40 (see arrow Y201). Then, the end portion of the faucet socket 30 and the stepped portion of the inspection plug 201 are in close contact with the annular packing 220, and the inspection plug 201 can be attached to the faucet socket 30. At this time, since the outer side surface of the annular packing 220 is covered with the cylindrical portion 221 and pressed from the outside, the water supply outlet can be closed in a highly airtight state by the inspection plug 201, and an appropriate Inspection can be performed. Further, since the vinyl tape is not used at the time of inspection as described above, it is easy to remove after inspection, and the inspection plug 201 can be reused and the faucet socket 30 can be easily used.

JP 2000-337581 A

On the other hand, when the water supply pipe 40 is inspected, it is necessary to perform an operation of removing air from the water supply pipe 40. Specifically, when the above-described

inspection plugs

101 and 201 are used, first, the

inspection plugs

101 and 201 are attached to the faucet socket 30 and then the inspection pump 50 uses a predetermined amount in the water supply pipe 40. Apply water pressure. After that, the operation of loosening the mounting state of the

inspection plugs

101 and 201 with respect to the faucet socket 30 and removing the air in the water supply pipe 40 is performed.

However, at the time of the above-described air venting operation, in order to loosen the mounting state of the

inspection plugs

101 and 201 mounted on the faucet socket 30 with water pressure applied to the water faucet pipe 40, the faucet socket 30 and the water supply pipe 40 Water is scattered with the air and discharged. Then, the water scatters around at the time of inspection, and there arises a problem that the inside of the house where the water supply pipe 40 is installed, particularly, the wall surface where the faucet socket 30 is installed gets dirty with water.

For this reason, an object of the present invention is to provide a plug for water supply piping that can solve the above-mentioned problem that water is scattered during inspection.

In order to achieve the above object, a plug for water supply piping according to one aspect of the present invention is
A water supply pipe plug that is provided at a water supply outlet of a water supply pipe and closes a faucet socket in which a socket-side screw portion is formed on an inner surface,
A plug body having a cylindrical shape with one end closed;
A screw part that protrudes from one end face of the plug body that is plugged and is inserted into and screwed into the socket side screw part, and
The outer diameter of the plug body is formed larger than the outer diameter of the screw portion,
A through-hole penetrating from the one end surface into the cylinder of the plug body is formed in one end surface of the annularly formed plug body located around the root portion of the screw portion with respect to the plug body, and a circular shape. An annular ring disposed opposite to one end surface of the plug body that is annular and includes a packing made of an elastic member having a predetermined thickness;
Around the one end surface of the plug main body, a cylindrical packing support portion that covers the outer periphery of the packing disposed to face the one end surface of the plug main body is provided.
The configuration is as follows.

And in the above plug for water supply piping,
The packing having an annular shape is formed such that the inner diameter of the packing is larger than the outer diameter of the screw portion.
The configuration is as follows.

Moreover, in the above plug for water supply piping,
One end surface of the annular plug body is inclined from the outer peripheral side toward the inner peripheral side so that the inner peripheral side is recessed on the opposite side of the protruding end side of the screw portion from the outer peripheral side of the one end surface. Formed,
The configuration is as follows.

Moreover, in the above plug for water supply piping,
The packing has an inner diameter that is substantially the same as the outer diameter of the screw portion, a first packing disposed at a root portion of the screw portion with respect to one end surface of the plug body, and an outer diameter of the first packing. A second packing having a large inner diameter and disposed outside the first packing,
The plug in the thickness direction of the first packing and the second packing in a state where the first packing and the second packing are arranged to face one end surface of the plug body. The first packing so that the end of the second packing located on the opposite side to the one end surface side of the main body is located closer to the protruding end of the screw part than the end of the first packing And the thickness of the second packing,
Between the first packing and the second packing, at least a part of the through hole is located,
The configuration is as follows.

Moreover, in the above plug for water supply piping,
On the one end surface of the plug body that is annular, a groove portion having a predetermined depth that is annular is provided.
The configuration is as follows.

Moreover, in the above plug for water supply piping,
Along the axial direction of the screw part, a screw part side through-hole that leads from the insertion end of the screw part to the socket side screw part to the inside of the cylinder of the plug body is provided,
A removable plug member for closing the screw part side through hole from the cylindrical inner side of the plug body is provided.
The configuration is as follows.

Moreover, in the above plug for water supply piping,
A notch groove having a predetermined depth is provided on the outer surface near the one end surface of the cylindrical portion of the plug body.
The configuration is as follows.

According to the water supply pipe plug having the above-described configuration, water can be prevented from being scattered at the time of inspection, and can be easily reused to improve inspection efficiency.

It is a figure for demonstrating the water supply piping inspected using the plug for water supply piping which is this invention. It is a figure which shows the outline of a structure of the plug for water supply piping relevant to this invention. It is a figure which shows the outline of a structure of the plug for water supply piping relevant to this invention. It is a figure which shows the outline of a structure of the plug for water supply piping in the 1st Embodiment of this invention. It is a figure which shows the detailed structure of the plug for water supply piping disclosed in FIG. It is a figure when the plug main body which comprises the plug for water supply piping disclosed in FIG. 5 is seen from one end side. It is a figure when the packing which comprises the plug for water supply piping disclosed in FIG. 5 is seen from one end side. It is a figure which shows a mode when attaching the plug for water supply piping disclosed in FIG. 5 to a faucet socket, and inspecting water supply piping. It is a figure which shows a mode when attaching the plug for water supply piping disclosed in FIG. 5 to a faucet socket, and inspecting water supply piping. It is a figure which shows a mode when attaching the plug for water supply piping disclosed in FIG. 5 to a faucet socket, and inspecting water supply piping. It is a figure which shows the detailed structure of the plug for water supply piping in the 2nd Embodiment of this invention. It is a figure when the plug main body which comprises the plug for water supply piping disclosed in FIG. 11 is seen from one end side. It is a figure which shows the detailed structure of the plug for water supply piping in the 3rd Embodiment of this invention. It is a figure which shows a mode when attaching the plug for water supply piping disclosed in FIG. 13 to a faucet socket, and inspecting water supply piping. It is a figure which shows a mode when attaching the plug for water supply piping disclosed in FIG. 13 to a faucet socket, and inspecting water supply piping. It is a figure which shows a mode when attaching the plug for water supply piping disclosed in FIG. 13 to a faucet socket, and inspecting water supply piping. It is a figure which shows the detailed structure of the plug for water supply piping in the 4th Embodiment of this invention. It is a figure which shows the detailed structure of the plug for water supply piping in the 5th Embodiment of this invention. It is a figure when the plug main body which comprises the plug for water supply piping disclosed in FIG. 18 is seen from one end side. It is a figure which shows the mode after attaching the plug for water supply piping disclosed in FIG. 18 to the faucet socket, and inspecting water supply piping. It is a figure which shows the detailed structure of the plug for water supply piping in the 6th Embodiment of this invention. It is a figure which shows the mode after attaching the plug for water supply piping disclosed in FIG. 21 to the faucet socket, and inspecting water supply piping.

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. FIG. 4 is a diagram showing an outline of the configuration of the water supply pipe plug in the present embodiment, and FIGS. 5 to 7 are diagrams showing the detailed configuration thereof. FIGS. 8 to 10 are views showing a state when the water supply pipe is inspected by attaching the water supply pipe plug to the faucet socket.

Here, in the following embodiment, the water supply pipe 40 to be subjected to the inspection of the water supply pipe using the water supply pipe plug 1 according to the present invention is the same as that shown in FIG. 1 described above, for example. And the plug 1 for water supply piping which is this invention was each installed in wall surfaces, such as the kitchen A shown in FIG. 1, and the toilet D, as an outlet of the water connected to the water supply piping 40 and supplied with the water supply piping 40 concerned The faucet socket 30 is closed. Further, the water supply pipe 40 is inspected by connecting the inspection pump 50 to the end of the water supply pipe 40 opposite to the water tap socket 30 side with the water tap socket 30 closed with the water supply pipe plug 1. It is performed by applying a constant water pressure in the water supply pipe 40 by the inspection pump 50, and thus whether water leakage occurs in the water supply pipe 40 or whether an appropriate water pressure is generated for water supply. Check out.

In FIG. 1, two pipes 40 connected to the kitchen A, bathroom B, and washroom C are for water supply and hot water supply, respectively. May be used to perform inspections.

[Constitution]
First, the faucet socket 30 to which the water supply pipe plug 1 of the present invention is attached constitutes a water supply outlet of the water supply pipe 40 and has a substantially cylindrical shape. A female screw portion 31 (socket-side screw portion) is formed on the inner wall surface of the faucet socket 30, and the water supply pipe plug 1 is screwed and closed as shown by an arrow Y1 in FIG. It will come off.

And the plug 1 for water supply piping in this embodiment protrudes further from the cylindrical plug main-body part 10 with which the one end side (left end part side of FIG. 4) was plugged, as shown in FIG. 4, and its one end surface. And a male screw part 11 (screw part) provided integrally. Further, the water supply pipe plug 1 includes a packing 20 disposed so as to be opposed to one end surface which is an annular shape of the plug body 10 to which the male screw portion 11 is connected. Hereinafter, a specific configuration of the plug body 10 will be described with reference to the drawings.

FIG. 5 is a diagram showing a detailed configuration of the water supply pipe plug 1. The plug main body 10 is shown in the sectional view taken along the line AA in FIG. 6, and the packing 20 is shown in the sectional view taken along the line BB in FIG. 7. Show. 5 and 7 are cross-sectional views, but hatching is not shown, and the same applies to other drawings in this embodiment and other embodiments described below. Moreover, FIG. 6 is the figure which looked at the plug 1 for water supply piping shown in FIG. 5 from the one end side (male screw part 11 side), and FIG. 7 saw the packing 20 shown in FIG. FIG.

As shown in FIGS. 5 and 6, the plug main body portion 10 and the male screw portion 11 constituting the water supply pipe plug 1 have the same center axis, and the outer diameter of the plug main body portion 10 is the male screw. It is formed larger than the outer diameter of the part 11. For this reason, one end surface 12 of the plug main body portion 10 to which the male screw portion 11 is connected, that is, the periphery (reference numeral 12) of the base portion of the male screw portion 11 with respect to the plug main body portion 10 is formed in an annular shape. One end surface 12 of the annular plug body 10 has a peripheral portion (outermost peripheral portion) formed so as to protrude to a predetermined height, and covers the outer periphery of the packing 20 as will be described later. The cylindrical packing support part 13 which supports so that it may hold | suppress from the outside is formed. In addition, the opposite side to the one end surface 12 of the plug main-body part 10 is formed in the cylindrical shape, and the cylindrical wall 15 of predetermined length is formed.

Further, an annular portion (indicated by reference numeral 12) between one end surface 12 of the plug main body portion 10, that is, the inner wall surface of the packing support portion 13 and the outer surface of the male screw portion 11, is located on the inner peripheral side rather than the outer peripheral side. The side is formed to be recessed in the direction opposite to the tip direction of the male screw portion 11. In other words, the annular one end surface 12 is formed in a mortar shape so as to be inclined from the outer peripheral side toward the inner peripheral side. A through hole 14 is formed in one end surface 12 of the plug main body 10 so as to penetrate the one end surface 12 and communicate with the inside of the cylinder of the plug main body 10. For example, four through holes 14 are formed as shown in FIG. 6, but the number thereof is arbitrary, and at least one may be formed.

The male screw portion 11 is formed to have an outer diameter that is substantially the same as the inner diameter of the female screw portion 31 so that the male screw portion 11 can be inserted into and screwed into the female screw portion 31 of the faucet socket 30. A male screw corresponding to the female screw portion 31 formed on the inner wall surface of the faucet socket 30 is formed on the outer surface of the male screw portion 11.

Further, the packing 20 is formed of an elastic member such as rubber, and has an annular shape having a predetermined thickness. The outer diameter of the packing 20 is substantially the same as the inner diameter of the packing support portion 13, and is formed so that the packing 20 can be disposed inside the packing support portion 13. Further, the inner diameter of the packing 20 is formed larger than the outer diameter of the male screw portion 11, but is formed so as to be located on the inner peripheral side with respect to the place where the through hole 14 is formed. As a result, the packing 20 has a male screw when one end surface of the packing 20 (the end surface facing the one end surface 12 of the plug body 10) faces the one end surface 12 of the plug body 10. It is located between the outer surface of the part 11 and the inner wall surface of the packing support part 13 and is arranged so as to cover the through hole 14.

However, since one end surface of the packing 20 (the end surface facing the one end surface 12 of the plug main body 10) is formed flat, the packing 20 is simply disposed facing the one end surface 12 of the plug main body 10. Then, as shown in FIG. 8, a gap is generated between the plug body 10 and the one end face 12. In particular, on the inner peripheral side, a gap is increased between the end face plug body 10 of one end face of the packing 20 and the through hole 14 is opened. On the other hand, as shown in FIG. 9 to be described later, when the packing 20 is sandwiched between the faucet socket 30 and the one end face 12 of the plug body 10 and pressed from both sides, the packing 20 is formed by an elastic member. Therefore, one end surface of the packing 20 is brought into close contact with the inclined one end surface 12 of the plug body 10, and the through hole is closed. This will be described in detail when the following operation is described.

[Operation]
Next, an operation when performing an inspection using the water supply pipe plug 1 having the above-described configuration will be described with reference to FIGS.

First, as shown in FIG. 2, the water supply pipe plugs 1 are respectively attached to the water tap sockets 30 constituting the water supply outlets of the water supply pipe 40. Specifically, as shown in FIG. 8, the packing 20 is disposed so as to face the one end surface 12 of the plug body 10 around the base of the male screw portion 11 of the plug body 10. Then, as shown by an arrow Y1 in FIG. 8, the male screw portion 11 of the water supply pipe plug 1 is screwed into the female screw portion 31 of the faucet socket 30 to close the faucet socket 30.

At this time, as shown by an arrow Y1 in FIG. 9, the packing 20 of the water supply pipe plug 1 is sandwiched between the faucet socket 30 and the plug main body 10 and is appropriately pressed from both side surfaces. The male screw part 11 of the main body 10 is screwed into the female screw part 31 of the faucet socket. Then, as shown in FIG. 9, the packing 20 is deformed because it is formed of an elastic member, and the end surface (one end surface) of the packing 20 that faces the one end surface of the plug body 10 is inclined to the plug body 10. The one end face 12 is in close contact, and the through hole 14 is closed. At this time, the outer periphery of the packing 20 is in close contact with the inner wall surface of the packing support portion 13 of the plug body 10.

Then, after all the faucet sockets 30 are respectively closed with the water supply pipe plugs 1, a predetermined water pressure is applied to the water supply pipe 40 by the inspection pump 50 as shown in FIG. At this time, as described above, since the faucet socket and the plug main body 10 are in close contact with each other in the packing 20, no water leakage occurs.

Subsequently, if the air remains in the water supply pipe 40, an appropriate inspection cannot be performed. Therefore, the work of removing the air in the water supply pipe 40 is performed. For this purpose, the mounting state of the water supply pipe plug 1 with respect to the faucet socket 30, that is, the screwing condition is loosened. Specifically, as shown by an arrow Y2 in FIG. 10, the plug main body 10 is moved by turning the male screw portion 11 in a direction away from the faucet socket 30. At this time, water supply is performed so that at least the end face of the faucet socket 30 remains in close contact with the other end face of the packing 20 (the end face opposite to the one end face 12 facing the one end face 12 of the plug body 10). Loosen the pipe plug 1 attached.

Then, as shown in FIG. 10, one end surface of the packing 20 (the end surface facing the one end surface 12 of the plug body 10) is formed flat, so that one end surface of the packing 20 and the plug body 10 A gap is formed between the first end surface 12 and the end surface 12. More specifically, on the inner diameter side of the packing 20, the gap with the one end face 12 of the plug body 10 is increased, and the through hole 14 formed in the one end face 12 of the plug body 10 is opened. On the other hand, on the outer diameter side of the packing 20, one end surface of the packing 20 and the one end surface 12 of the plug body 10 are in close contact with each other, and the outer surface of the packing 20 is connected to the inner wall surface of the packing support portion 13. It is in a close contact state.

As described above, the air in the water supply pipe 40 is changed to the arrows A1, A2, and A2 in FIG. As shown in A3, the plug body 10 comes out of the cylinder. Specifically, the air in the water supply pipe 40 first passes between the screw connection from the faucet socket 30 to the female screw portion 31 of the faucet socket 30 and the male screw portion 11 of the plug body 10, as indicated by an arrow A1. It slips out and flows into the space between the outer side surface of the male screw part 11 of the plug body 10 and the inner side surface of the packing 20. Thereafter, as shown by an arrow A2, the air flows between one end surface of the packing 20 and one end surface 12 of the plug body 10 from between the outer surface of the male screw portion 11 of the plug body 10 and the inner surface of the packing 20. It flows into the gap between them and passes through the through-hole 14 opened in the one end surface 12 of the plug main body 10 as shown in A3, and comes out into the cylinder.

At this time, along with the air in the water supply pipe 40 described above, water supplied to the water supply pipe 40 may be discharged into the through hole 14, but even in that case, the water is discharged into the cylinder of the plug body 10. Therefore, the discharged water can be easily recovered. Further, since the end face of the faucet socket 30 is in close contact with the other end face of the packing 20, and the outer side face of the packing 20 is in close contact with the inner wall surface of the packing support portion 13, water is discharged from other places. Can be prevented.

Thereafter, until the packing 20 of the water supply pipe plug 1 is sandwiched between the faucet socket 30 and the plug body 10 as shown in FIG. As indicated by an arrow Y1, the male screw portion 11 of the plug body 10 is screwed into the female screw portion 31 of the faucet socket 30. Thereby, the faucet socket 30 is reliably plugged with the plug 1 for water supply piping, and an appropriate test | inspection can be performed. Further, after the inspection, the male screw portion 11 of the plug body 10 is loosened from the faucet socket 30 so that it can be easily removed and reused as it is.

As described above, by using the water supply pipe plug 1 according to the present invention, an appropriate inspection can be performed, the reuse is easy, and the inspection cost can be reduced. In addition, according to the water supply pipe plug 1 of the present invention, it is possible to prevent water from splashing around the water supply pipe 40 during inspection. As a result, it is possible to solve the problem that the inside of the house where the water supply pipe 40 is installed, in particular, the wall surface where the faucet socket 30 is installed gets dirty with water.

In addition, although the case where the one end surface 12 of the plug main body 10 is inclined is illustrated above, the plug body 10 is not necessarily limited to being inclined and may be formed flat. Even in such a case, when the water supply pipe plug 1 is loosened from the faucet socket 30, the air in the water supply pipe 40 passes through the slight gap between the packing 20 and the one end surface 12 of the plug body 10. 14 can flow in.

In the above description, the case where the inner diameter of the packing 20 is formed larger than the outer diameter of the male screw portion 11 of the plug body 10 is exemplified, but these may be formed with substantially the same diameter. Even in such a case, when the mounting state of the water supply pipe plug 1 to the faucet socket 30 is loosened, the air in the water supply pipe 40 flows into the through hole 14 through a slight gap between the packing 20 and the male screw portion 11. Yes.

<Embodiment 2>
Next, a second embodiment of the present invention will be described with reference to FIGS. The plug 1 for water supply piping in this embodiment has the structure substantially the same as what was disclosed in Embodiment 1 mentioned above, and also has the following structures.

FIG. 11 shows a cross-sectional view of the plug 1 for water supply piping, and the plug main body 10 shows a cross-sectional view taken along line AA of FIG. However, hatching is not shown in the cross-sectional view of the plug body 10. FIG. 12 shows the plug body 10 as viewed from one end side.

As shown in FIGS. 11 and 12,

groove portions

12a and 12b having a predetermined depth are formed on one end face 12 of the plug body 10 formed in an annular shape. Specifically, the

groove portions

12 a and 12 b are formed in a V shape on the one end surface 12 of the plug body 10 so as to be recessed along the thickness direction of the one end surface. And the groove part 12a is formed in the annular | circular shape which passes on the through-hole 14 mentioned above, and another groove part 12b is formed inside it.

Thereby, when the water supply piping plug 1 is tightened to the faucet socket 30 to perform inspection after the air venting operation described above, it remains between the packing 20 and the one end face 12 of the plug body 10 during the air venting operation. Air and water are accommodated in the

grooves

12a and 12b. Therefore, it is possible to avoid a situation in which an appropriate inspection cannot be performed with the remaining air or water, and an appropriate inspection can always be performed.

<Embodiment 3>
Next, a third embodiment of the present invention will be described with reference to FIGS. Although the plug 1 for water supply piping in this embodiment has taken the structure substantially the same as what was disclosed in Embodiment 1 mentioned above, a structure differs in several points.

[Constitution]
First, as shown in the cross-sectional view of FIG. 13, the one end face 12 of the plug body 10 in the present embodiment is formed flat. And the outer peripheral side of the one end surface 12 of the plug main body 10 is dented and formed in the predetermined depth, and the annular recessed part 12c is formed. The inner diameter of the recess 12c is formed larger than the first packing 21 described later, and the outer diameter of the recess 12c is larger than the outer diameter of the faucet socket 30 and is almost the same as the inner diameter of the packing support portion 13. Is formed. However, the outer diameter of the recess 12 c may be smaller than the outer diameter of the faucet socket 30. The above-described through hole 14 is formed in a flat portion of the one end face 12 of the plug body 10.

In this embodiment, as shown in FIGS. 13 and 14, two annular packings are provided. First, the inner diameter of the first packing 21 is such that a male screw corresponding to the outer diameter of the male screw portion 11 of the plug main body 10, particularly the root portion of the male screw portion 11 with respect to the one end surface 12 of the plug main body 10 is not formed. It is almost the same as the outer diameter of the part. Further, the outer diameter of the first packing 21 is formed smaller than the distance from the center of the one end face 12 of the plug body 10 to the farthest part of the through hole 14. And this 1st packing 21 is arrange | positioned in the root part with respect to the end surface 12 of the plug main body 10 of the male screw part 11, as shown in FIG. 14, In this state, one end surface ( The end face facing the one end face 12 of the plug body 10 does not block all the through holes 14 described above.

The inner diameter and the outer diameter of the second packing 22 correspond to the annular recess 12c formed on the one end face 12 of the plug body 10, and are formed almost the same as the inner diameter and the outer diameter of the recess 12c. Has been. And the 2nd packing 22 is arrange | positioned in the outer peripheral side of the one end surface 12 of the plug main body 10 because the one end side (end surface side facing the one end surface 12 of the plug main body 10) is accommodated in the recessed part 12c. Is done. At this time, the outer surface of the second packing 22 is in contact with and covered with the inner wall of the packing instruction unit 13.

Further, the thickness (height) of the second packing 22 is formed thicker (longer) than the first packing 21. Thereby, as shown in FIG. 14, in the state where the first packing 21 and the second packing 22 are arranged to face the one end face 12 of the plug body 10, the second packing is located on the opposite side. The end surface (end portion) of the packing 22 is positioned closer to the protruding end side (tip side) of the male screw portion 11 than the end surface (end portion) of the first packing 21.

[Operation]
Next, an operation when performing an inspection using the water supply pipe plug 1 having the above-described configuration will be described with reference to FIGS. 14 to 16.

First, as shown in FIG. 14, the first packing 21 is disposed so as to face the one end surface 12 around the root of the male screw portion 11 of the plug body 10. In addition, the second packing 22 is disposed outside the first packing 21 so that one end surface side is accommodated in the recess 12 c formed on the one end surface 12 of the plug body 10. Then, as shown by an arrow Y11 in FIG. 14, the male screw portion 11 of the water supply pipe plug 1 is screwed into the female screw portion 31 of the faucet socket 30 to close the faucet socket 30.

At this time, the male screw portion 11 of the plug main body 10 is screwed into the female screw portion 31 of the faucet socket 30 until the end surface of the faucet socket 30 comes into close contact with the first packing 21. Then, as shown in FIG. 15, since the second packing 22 is formed of an elastic member, the second packing 22 is sandwiched between the faucet socket 30 and the plug body 10 and is appropriately pressed from both end surfaces. In addition, the faucet socket 30 and the plug body 10 are in close contact with each other on the outer peripheral side.

Then, after all the faucet sockets 30 are respectively closed with the water supply pipe plugs 1, a predetermined water pressure is applied to the water supply pipe 40 by the inspection pump 50 as shown in FIG. At this time, since the water supply outlet of the faucet socket 30 is closed by the male screw portion 11 of the plug body 10 and the first packing 21, no water leakage occurs.

Subsequently, if the air remains in the water supply pipe 40, an appropriate inspection cannot be performed. Therefore, the work of removing the air in the water supply pipe 40 is performed. For this purpose, the mounting state of the water supply pipe plug 1 with respect to the faucet socket 30, that is, the screwing condition is loosened. Specifically, as shown by an arrow Y12 in FIG. 16, the male screw portion 11 is turned in a direction away from the faucet socket 30 to move the plug body 10. At this time, the end face of the faucet socket 30 is separated from the other end face of the first packing 21 (the end face opposite to the one end face facing the one end face 12 of the plug body 10), or the faucet The socket 30 and the first packing 21 are not in close contact (for example, in a contact state). However, the state where the end face of the faucet socket 30 is kept in close contact with the second packing 22 located on the outer peripheral side is maintained.

Then, as shown in FIG. 16, a gap is generated between the end face which is the water supply outlet of the faucet socket 30 and the first packing 21. On the other hand, the outer peripheral side of the end face of the faucet socket 30 is in a state of being in close contact with the second packing 22. In this state, a predetermined water pressure is applied to the water supply pipe 40 by the inspection pump 50, so that the air in the water supply pipe 40 flows into the plug main body 10 as indicated by arrows A1, A2, A3 in FIG. It will come out inside the cylinder. Specifically, the air in the water supply pipe 40 first passes between the screw connection from the faucet socket 30 to the female screw portion 31 of the faucet socket 30 and the male screw portion 11 of the plug body 10, as indicated by an arrow A1. It flows out and flows into the space between the end face of the faucet socket 30 and the first packing 21 and between the outer side face of the first packing 21 and the inner side face of the second packing 22. Thereafter, the air escapes into the cylinder through the through hole 14 opened at the one end surface 12 of the plug body 10 as indicated by an arrow A2.

At this time, along with the air in the water supply pipe 40 described above, water supplied to the water supply pipe 40 may be discharged into the through hole 14, but even in that case, the water is discharged into the cylinder of the plug body 10. Therefore, the discharged water can be easily recovered. Further, since the end face of the faucet socket 30 is in close contact with the second packing 22, it is possible to prevent water from being discharged from other places.

Thereafter, as shown in FIG. 15, the male screw portion 11 of the plug body 10 is inserted into the faucet as indicated by an arrow 11 in FIG. 15 until the end surface of the faucet socket 30 comes into close contact with the second packing 22. Screw into the female thread 31 of the socket 30. Thereby, the faucet socket 30 is reliably plugged with the plug 1 for water supply piping, and an appropriate test | inspection can be performed. Further, after the inspection, the male screw portion 11 of the plug body 10 is loosened from the faucet socket 30 so that it can be easily removed and reused as it is.

In the above description, the case where the opening of the through hole 14 is not covered with the first packing 21 and is completely exposed has been described. It may be covered with the second packing 22. That is, it is sufficient that at least a part of the through hole 14 is opened and exposed between the first packing 21 and the second packing 22.

<Embodiment 4>
Next, a fourth embodiment of the present invention will be described with reference to FIG. The plug 1 for water supply piping in this embodiment has a configuration substantially the same as that disclosed in the above-described third embodiment, and further includes the following configuration.

FIG. 17 shows a cross-sectional view of the plug 1 for water supply piping. As shown in this figure, on the one end face 12 of the plug body 10 formed in an annular shape, that is, on the flat portion of the one end face 12,

annular grooves

12d and 12e having a predetermined depth are formed. ing. Specifically, the

groove portions

12 d and 12 e are formed in a V shape on the one end surface 12 of the plug body 10 so as to be recessed along the thickness direction of the one end surface 12. The groove portion 12d is formed around the root of the male screw portion 11, and another groove portion 12e is formed on the outer side and the inner side of the through hole 14 formation position. The formation positions of the

water portions

12d and 12e are not necessarily limited to the positions described above.

Thereby, when the water supply pipe plug 1 is fastened to the faucet socket 30 for inspection after the air venting operation described above, the remaining air between the first packing 21 and the one end surface 12 of the plug body 10 Water is accommodated in the

grooves

12d and 12e. Therefore, it is possible to avoid a situation in which an appropriate inspection cannot be performed with the remaining air or water, and an appropriate inspection can always be performed.

<Embodiment 5>
Next, a fifth embodiment of the present invention will be described with reference to FIGS. Although the plug 1 for water supply piping in this embodiment has taken the structure substantially the same as what was disclosed in Embodiment 1 mentioned above, a structure differs in several points. The configuration described below can also be applied to the configurations of the second, third, and fourth embodiments described above.

[Constitution]
FIG. 18 shows a cross-sectional view of the water supply pipe plug, and FIG. 19 shows a view of the plug main body from one end side. In FIG. 18, the plug main body 10 is shown in a cross-sectional view along the line AA in FIG. 19, but hatching is not shown, and the same applies to other drawings in the present embodiment.

As shown in FIGS. 18 and 19, the male screw portion 11 of the plug main body 10 in the present embodiment has a central portion extending in the axial direction to the inside of the cylinder opposite to the one end face 12 of the plug main body 10. A through-hole (a screw-part side through-hole) is formed, and a screw hole 16 having a female screw formed on the inner wall surface is formed. Further, the male screw portion 11 has a cross-sectional shape that crosses the screw hole 16 as a center, and a through-hole (through the inside of the cylinder that is opposite to the one end surface 12 of the plug body 10 along the axial direction ( A cross-shaped through hole 17 that is a threaded portion side through hole) is formed.

Further, the plug main body 10 in the present embodiment has a plug member 18 having a screw main body that is screwed into the screw hole 16 from the side opposite to the one end face 12 of the plug main body 10, that is, the inside of the cylinder. Is provided. The plug member 18 includes a screw head 18 a on one end side of the screw body, and is formed to have a size that can close the cross-shaped through hole 17 formed in the male screw portion 11 of the plug body 10. ing. Further, a wrench hole 18b is formed in the center of the screw head 18a of the plug member 18 for biasing the rotational force with a wrench or the like when the plug member 18 is screwed into the screw hole 16. Further, when the plug member 18 is inserted into the screw hole 16 of the plug main body 10, a third packing 19 made of an elastic member is provided between the male screw portion 11 and the screw head 18 a of the plug main body 10. Is inserted. Note that the third packing 19 is formed in substantially the same size as the screw head 18 a of the plug member 18.

Thus, the screw hole 16 and the cross-shaped through hole 17 are inserted into the screw hole 16 of the plug main body 10 via the third packing 19 so that the screw hole 16 and the cross-shaped through hole 17 are inserted into the screw main body and the third packing. 19 and the screw head 18b. On the other hand, by removing the plug member 18 from the screw hole 16 of the plug main body 10, the male screw portion 11 of the plug main body 10 communicates with the inside of the plug main body 10 from the distal end side.

[Operation]
Next, an operation when performing an inspection using the water supply pipe plug 1 having the above-described configuration will be described with reference to FIGS. 18 and 20.

First, as shown in FIG. 18, the plug member 18 is attached to the screw hole 16 of the plug main body 10 via the third packing 19 to close the screw hole 16 and the cross-shaped through hole 17. Then, as shown by an arrow Y 21, the male screw portion 11 of the water supply pipe plug 1 is screwed into the female screw portion 31 of the faucet socket 30 to close the faucet socket 30. Thereafter, in the same manner as described above, a predetermined water pressure is applied to the water supply pipe 40 by the inspection pump 50, the air venting operation is performed, and the inspection is executed.

After the inspection, the plug member 18 is removed from the screw hole 16 of the plug body 10 as shown by an arrow Y22 in FIG. At this time, since water pressure is applied to the water supply pipe 40, water from the faucet socket 30 is discharged from the screw hole 16 formed in the male screw part 11 of the plug body 10 and the cross-shaped through hole 17. However, even when water is discharged from the screw hole 16 and the cross-shaped through hole 17, it is only discharged into the cylinder of the plug body 10, so that water is collected from the other end side of the plug body 10. Thus, it is possible to suppress water from splashing around after the inspection. For this reason, the handling after an inspection becomes easy.

The screw hole 16 and the cross-shaped through hole 17 formed in the plug body 1 may have any shape, and a screw may not be formed on the inner wall surface of the screw hole 16. Further, the plug member 18 that closes the screw hole 16 and the cross-shaped through hole 17 is not limited to being a screw.

<Embodiment 6>
Next, a sixth embodiment of the present invention will be described with reference to FIGS. Although the plug 1 for water supply piping in this embodiment has taken the structure substantially the same as what was disclosed in Embodiment 1 mentioned above, a structure differs in several points. The configuration described below can also be applied to the configurations of the second, third, and fourth embodiments described above.

As shown in FIG. 21, the water supply pipe plug 1 in the present embodiment is provided along the outer surface of the cylindrical cylindrical wall 15 positioned on the opposite side to the one end surface 12 of the plug body 10. A notch groove 15a having a predetermined depth is formed. This notch groove 15 a is located in the vicinity of one end surface 12 of the plug body 10, and in particular, is located at the root of the cylindrical wall 15 extending from the back side of the one end surface 12. And the groove shape of the notch groove 15a is formed in the cross-sectional V shape, for example. Further, the depth of the cutout groove 15a is formed so as to have a strength at which the cylindrical wall 15 can be easily folded and separated from the one end face 12.

With the above-described configuration, the faucet socket 30 that does not need to be attached with a faucet or the like after the inspection is obtained by folding and separating the cylindrical wall 15 of the water supply piping plug 1 that is attached, thereby interfering with subsequent operations and actions. Can be prevented.

As mentioned above, although this invention was demonstrated with reference to the said embodiment etc., this invention is not limited to embodiment mentioned above. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Plug for water supply piping 10 Plug main body 11 Male screw part 12 One

end surface

12a, 12b, 12d, 12e Groove part 12c Recess 13 Packing support part 14 Through-hole 15 Cylindrical wall 15a Notch groove 16 Screw hole 17 Cross-shaped through-hole 18 Plug member

18a Screw head

18b Wrench hole 19 Third packing 20 Packing 21 First packing 22 Second packing 30 Faucet socket 31 Female screw part 40 Water supply piping 50 Inspection pump

Claims

A water supply pipe plug that is provided at a water supply outlet of a water supply pipe and closes a faucet socket in which a socket-side screw portion is formed on an inner surface,
A plug body having a cylindrical shape with one end closed;
A screw part that protrudes from one end face of the plug body that is plugged and is inserted into and screwed into the socket side screw part, and
The outer diameter of the plug body is formed larger than the outer diameter of the screw portion,
A through-hole penetrating from the one end surface into the cylinder of the plug body is formed in one end surface of the annularly formed plug body located around the root portion of the screw portion with respect to the plug body, and a circular shape. An annular ring disposed opposite to one end surface of the plug body that is annular and includes a packing made of an elastic member having a predetermined thickness;
Around the one end surface of the plug main body, a cylindrical packing support portion that covers the outer periphery of the packing disposed to face the one end surface of the plug main body is provided.
Plug for water supply piping.
It is a plug for water supply piping according to claim 1,
The packing having an annular shape is formed such that the inner diameter of the packing is larger than the outer diameter of the screw portion.
Plug for water supply piping.
The water supply pipe plug according to claim 1 or 2,
One end surface of the annular plug body is inclined from the outer peripheral side toward the inner peripheral side so that the inner peripheral side is recessed on the opposite side of the protruding end side of the screw portion from the outer peripheral side of the one end surface. Formed,
Plug for water supply piping.
It is a plug for water supply piping according to claim 1,
The packing has an inner diameter that is substantially the same as the outer diameter of the screw portion, a first packing disposed at a root portion of the screw portion with respect to one end surface of the plug body, and an outer diameter of the first packing. A second packing having a large inner diameter and disposed outside the first packing,
The plug in the thickness direction of the first packing and the second packing in a state where the first packing and the second packing are arranged to face one end surface of the plug body. The first packing so that the end of the second packing located on the opposite side to the one end surface side of the main body is located closer to the protruding end of the screw part than the end of the first packing And the thickness of the second packing,
Between the first packing and the second packing, at least a part of the through hole is located,
Plug for water supply piping.
It is a plug for water supply piping in any one of Claims 1 thru | or 4, Comprising:
On the one end surface of the plug body that is annular, a groove portion having a predetermined depth that is annular is provided.
Plug for water supply piping.
It is a plug for water supply piping in any one of Claims 1 thru | or 5, Comprising:
Along the axial direction of the screw part, a screw part side through-hole that leads from the insertion end of the screw part to the socket side screw part to the inside of the cylinder of the plug body is provided,
A removable plug member for closing the screw part side through hole from the cylindrical inner side of the plug body is provided.
Plug for water supply piping.
A plug for water supply piping according to any one of claims 1 to 6,
A notch groove having a predetermined depth is provided on the outer surface near the one end surface of the cylindrical portion of the plug body.
Plug for water supply piping.