TW201326627A - Plug for water plumbing - Google Patents

Abstract

A plug for water plumbing of the present invention includes a cylindrical plug body with one end closed, and a screw part that is provided protruding from a closed one-end face of the plug body and inserted to be screwed into a socket-side screw part. The outer diameter of the plug body is larger than that of the screw part. On a one-end face of the plug body formed as an annular part around the base of the screw part on the plug body, a through hole piercing the cylindrical plug body from the one-end face is formed. The plug has a packing disposed so as to face the annular one-end face of the plug body and formed by an elastic member having an annular shape and predetermined thickness. Around the one-end face of the plug body, a cylindrical packing supporting part that covers the periphery of the packing disposed so as to face the one-end face of the plug body is provided.

Description

Plugging for water supply piping

The present invention relates to a plug for a water supply pipe, and more particularly to a plug for a water supply pipe used when inspecting a water supply pipe.

A water supply pipe for supplying domestic water such as drinking water is installed in a building such as a high-rise building or a single-family building. The water supply pipe is disposed in a wall of a building or the like, and is provided in communication with a faucet seat provided on a wall surface of a kitchen, a bathroom, a bathroom, or the like. Further, since the faucet holder is provided with a faucet, the water supplied to the faucet holder provided through the water supply pipe can be discharged from the faucet.

Further, when the water supply pipe is installed in a building, first, it is checked whether or not the pipe leaks and the water pressure of the water supply is normal. This inspection is specifically carried out as follows.

First, as shown in FIG. 1, the faucet holder 30 is provided in the wall surfaces of the kitchen A, the bathroom B, the bathroom C, and the toilet D, respectively, and the water supply pipe 40 is connected to each faucet holder 30. Moreover, the two pipes 40 connected to the kitchen A, the bathroom B, and the washroom C, respectively, are used for cold water and hot water supply. Further, each of the faucet holders 30 is provided with an inspection plug 101 (shown only in the toilet D) in which the water outlet of the water supplied through the water supply pipe 40 is sealed. In this state, the inspection pump 50 is connected to the side opposite to the faucet holder 30 side of the water supply pipe 40, and the inspection pump 50 applies a constant water pressure to the water supply pipe 40. Thereby, it is checked whether or not water leakage occurs in the water supply pipe 40, and whether the water pressure of the water supply is normal.

In addition, as the inspection plugs 101 and 201, for example, the inspection plug disclosed in Patent Document 1 will be described with reference to FIGS. 2 and 3. First of all, The inspection plug 101 shown in Fig. 2 has a body portion 110 having a cylindrical outer shape and a push-out portion 111 integrally provided at one end side thereof. Specifically, the outer diameter of the body portion 110 is formed to be larger than the inner diameter of the cylindrical faucet socket 30. Further, the outer diameter of the tip end portion of the push-out portion 111 is formed to be smaller than the inner diameter of the faucet holder 30, and the diameter of the push portion 111 gradually increases from the front end portion to the main body portion 110 side. Further, a male screw portion is formed on the outer surface of the push-out portion 111, and the female screw portion 31 is screwed to the female screw portion 31 formed on the inner wall surface of the cylindrical faucet holder 30.

Further, at the time of inspection, the elastic member 120 such as a tape is wound around the male screw portion from the push-out portion 111 of the inspection plug 101. In this state, the male screw portion of the push-out portion 111 is locked into the female screw portion 31 formed on the inner wall surface of the faucet holder 30 constituting the water outlet of the water supply pipe 40 (see an arrow Y101). Then, the tape 120 is fitted into the screwing position of the male screw portion of the push-out portion 111 of the inspection plug 101 and the female screw portion 31 of the faucet holder 30, and the screwing position is in a close contact state. Thereby, the water outlet can be sealed by the inspection plug 101 in a high airtight state, and the inspection of the water supply pipe 40 can be performed properly.

Further, although the inspection plug 101 can be removed from the faucet holder 30 after the inspection is completed as described above, the male thread portion of the push-out portion 111 of the inspection plug 101 and the faucet holder 30 are removed when removed. An adhesive tape 120 is attached to each of the screw portions 31. In this regard, since the inspection plug 101 can be reused, and the faucet holder 30 needs to be installed with a faucet, it is necessary to remove the tape 120 attached to the male screw portion and the female screw portion 31. However, since the tape 120 is fitted and adhered to the slits of the threaded portions of the male screw portion and the female screw portion 31, it is difficult to completely remove it, and the removal work is very troublesome, and such a problem arises.

On the other hand, Patent Document 1 proposes an inspection plug 201 having the structure shown in FIG. The inspection plug 201 has a body portion 210 having a cylindrical outer shape and a male screw portion 211 integrally provided at one end side thereof. Specifically, the outer diameter of the body portion 210 is formed to be larger than the inner diameter of the faucet holder 30. In addition, male thread The outer diameter of the portion 211 is formed to be substantially the same diameter as the inner diameter of the faucet socket 30, that is, the female screw portion 31. As such, since the outer diameter of the body portion 210 is formed larger than the male screw portion 211, a step portion (at the root portion of the male screw portion 211 with respect to the body portion 210) is formed at the junction of the body portion 210 and the male screw portion 211.

Further, the inspection plug 201 has an annular gasket 220 that is in close contact with the step portion. The annular gasket 220 has an inner diameter substantially the same as that of the male thread portion 211, and an outer diameter is formed substantially the same as the body portion 210. Further, an annular cylindrical portion 221 is integrally provided on one end side of the main body portion 210 for covering the outer surface of the annular gasket 220 provided on the step portion.

In the inspection, the male screw portion 211 of the inspection plug 201 is locked into the female screw portion 31 formed on the inner wall surface of the faucet socket 30 constituting the water outlet of the water supply pipe 40 (see an arrow Y201). Then, the end portion of the faucet holder 30 and the step portion of the inspection plug 201 are in close contact with the annular gasket 220, respectively, and the inspection plug 201 can be attached to the faucet holder 30. At this time, since the outer side surface of the annular gasket 220 is covered by the tubular portion 221 and is pressed from the outer side, the water outlet can be sealed by the inspection plug 201 in a high airtight state, and can be properly inspected. . Further, as described above, since the tape is not used at the time of inspection, the removal operation after the end of the inspection becomes easy, and the reuse of the inspection plug 201 and the use of the faucet holder 30 are facilitated.

[Practical Technical Literature]

[Patent Literature]

Patent Document 1: Japanese Laid-Open Patent Publication No. 2000-337581

On the other hand, when the water supply pipe 40 is inspected, it is necessary to perform the water supply pipe. The work of air extraction within 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 holder 30, and then a predetermined water pressure is applied to the water supply pipe 40 by the inspection pump 50. Then, the installation state of the inspection plugs 101 and 201 with respect to the faucet holder 30 is released, and the air in the water supply pipe 40 is taken out, and such an operation is performed.

However, in the air pumping operation described above, the mounting state of the inspection plugs 101 and 201 attached to the faucet holder 30 is released in a state where the water pressure is applied to the water supply pipe 40, so that the water supply pipe 40 is inside. The water will be splashed out of the faucet seat 30 together with the air. Then, the water splashes to the surroundings during the inspection, so that the wall in which the water supply pipe 40 is installed, particularly the wall on which the faucet holder 30 is provided, is contaminated with water, and such a problem arises.

Accordingly, an object of the present invention is to provide a plug for a water supply pipe which can solve the problem of water splash at the time of inspection as described above.

In order to achieve the above object, a plug for a water supply pipe according to an embodiment of the present invention is a plug for a water supply pipe in which a faucet socket provided on a water outlet of a water supply pipe and having a socket side screw portion is formed on the inner side surface thereof; And having: a plug body having a cylindrical shape sealed at one end; and a threaded portion protruding from an end surface of the plug body of the plug body, being inserted and screwed to the socket side thread portion; outside the plug body The diameter is formed to be larger than the outer diameter of the threaded portion; the one end surface of the plug body formed to be annular around the root portion of the threaded portion of the plug body is formed to penetrate from the one end surface to the plug body a through hole inside the cylinder, and having a gasket disposed facing the end surface of the circular plug body, having a circular shape, having a predetermined thickness, being made of an elastic member; and a plug body a cylindrical washer support portion is arranged around the end face, The gasket support portion covers an outer circumference of the gasket disposed to face an end surface of the plug body.

Further, in the above-described plug for water supply piping, the gasket has a configuration in which the inner diameter of the gasket is formed to be larger than the outer diameter of the screw portion.

Further, in the plug for a water supply pipe, the end surface of the plug body is formed such that an end surface of the plug body is inclined from the outer peripheral side to the inner peripheral side of the one end surface so that the inner peripheral side of the one end surface is The outer peripheral side is recessed toward the opposite side with respect to the protruding end side of the threaded portion.

Further, in the above-described plug for a water supply pipe, the gasket is configured by a first gasket and a second gasket, and the first gasket has an inner diameter substantially the same as an outer diameter of the screw portion and is disposed in the thread portion. The second gasket has an inner diameter larger than an outer diameter of the first gasket and is disposed outside the first gasket on a root portion opposite to an end surface of the plug body; Setting a thickness of the first gasket and the second gasket so that the first gasket and the second gasket are disposed in a state in which the first gasket and the second gasket face an end surface of the plug body The end portion of the second gasket located on the opposite side of the one end surface side of the plug body in the thickness direction is located on the protruding end side of the threaded portion as compared with the end portion of the first gasket; At least a portion of the through hole is located between the first gasket and the second gasket.

Further, in the above-described plug for a water supply pipe, a groove portion having a circular predetermined depth is provided on one end surface of the annular plug body.

Further, in the above-described plug for water supply piping, the structure is: a threaded portion side through hole is provided, the threaded portion side through hole communicating with the inside of the cylinder of the plug body from an insertion end of the threaded portion of the socket side threaded portion along an axial direction of the threaded portion; The bolt member that is attached or detached, the bolt member plugs the threaded portion side through hole from the inner side of the cylinder of the plug body.

Also. In the above-described plug for water supply piping, the outer side surface near one end surface of the cylindrical portion of the plug body is provided with a slit having a predetermined depth around the outer side.

According to the plug for the water supply pipe having the above configuration, splashing of water at the time of inspection can be suppressed, and it can be easily reused, and the inspection efficiency can be improved.

[Best Mode for Carrying Out the Invention]

(First embodiment)

A first embodiment of the present invention will be described with reference to Figs. 4 to 10 . Fig. 4 is a view schematically showing a configuration of a plug for a water supply pipe according to the present embodiment, and Figs. 5 to 7 are views showing a detailed structure thereof. 8 to 10 are views showing a state in which the water supply pipe plug is attached to the faucet holder to perform the water supply pipe inspection.

Here, in the following embodiment, the water supply pipe 40 to be subjected to the water supply pipe inspection using the plug 1 for the water supply pipe of the present invention is, for example, the same as that shown in FIG. 1 described above. Further, the plug 1 for a water supply pipe according to the present invention is plugged in a faucet holder 30 which is provided on a wall surface of a kitchen A or a toilet D as shown in FIG. 1, and the faucet holder 30 is connected to the water supply pipe 40. And an outlet of water supplied from the water supply pipe 40. In addition, the water supply pipe 40 is inspected by the water supply pipe 40 in a state where the faucet holder 30 is plugged by the water supply pipe plug 1 . The end of the faucet holder 30 is connected to the inspection pump 50, and the inspection pump 50 applies a constant water pressure to the water supply pipe 40 to check whether water leakage has occurred in the water supply pipe 40. It is carried out at a suitable water pressure.

In addition, in FIG. 1, the two pipes 40 connected to the kitchen A, the bathroom B, and the washroom C are used for cold water and hot water, but the water supply pipe plug 1 of the present invention can also be used for any Inspection of the piping.

[structure]

First, the faucet holder 30 to which the plug 1 for a water supply pipe of the present invention is attached constitutes a water outlet of the water supply pipe 40 and has a substantially cylindrical shape. Further, the female screw portion 31 (the socket side screw portion) is formed on the inner wall surface of the faucet holder 30, and the water supply pipe plug 1 is locked and plugged as indicated by an arrow Y1 in Fig. 4 .

Further, as shown in FIG. 4, the plug 1 for a water supply pipe according to the present embodiment has a cylindrical plug body 10 having a one end side (the left end side of FIG. 4) as a plug, and more from one end surface thereof. A male thread portion 11 (thread portion) that is integrally provided in a protruding manner. Further, the water supply pipe plug 1 has a gasket 20 which is provided facing an annular end surface of the plug body 10 to which the male screw portion 11 is connected. The specific structure of the plug body 10 will be described below with reference to the drawings.

5 is a view showing a detailed configuration of the plug 1 for a water supply pipe, and the cross-sectional view taken along line A-A of FIG. 6 shows the plug body 10, and the cross-sectional view taken along line B-B of FIG. 7 shows the gasket 20. Further, although the plug body 10 shown in Fig. 5 is a cross-sectional view, the hatching is not shown, and the other drawings in the present embodiment or other embodiments described below are also the same. 6 is a view of the water supply pipe plug 1 shown in FIG. 5 as seen from the one end side (the male screw portion 11 side), and FIG. 7 is the gasket 20 shown in FIG. 5 as seen from the one end side. Figure.

As shown in Fig. 5 and Fig. 6, the plug body 10 and the yang which constitute the plug 1 for the water supply pipe are provided. The threaded portion 11 has the same central axis, and the outer diameter of the plug body 10 is formed to be larger than the outer diameter of the male thread portion 11. Thereby, one end surface 12 of the plug body 10 to which the male screw portion 11 is connected, that is, the periphery of the root portion (element symbol 12) of the male screw portion 11 of the plug body 10 is formed in a circular shape. An end surface 12 of the annular plug body 10 has a peripheral portion (outermost peripheral portion) projecting at a predetermined height, and as described below, is formed to cover the outer circumference of the gasket 20 and press the gasket 20 from the outside to be supported. A cylindrical washer support portion 13. Further, the opposite side of the one end surface 12 of the plug body 10 is formed in a cylindrical shape to form a cylindrical wall 15 of a predetermined length.

Further, an end surface 12 of the plug body 10, that is, an annular portion (shown by the reference numeral 12) between the inner wall surface of the washer support portion 13 and the outer surface of the male screw portion 11 is formed to have an inner circumference side than a outer circumference. The side is recessed in a direction opposite to the direction of the front end of the male thread portion 11. In other words, the one end surface 12 of the circular ring is formed obliquely in a mortar shape from the outer peripheral side to the inner peripheral side. Further, a through hole 14 that penetrates the one end surface 12 and opens into the inside of the cylinder of the plug body 10 is formed on one end surface 12 of the plug body 10. For example, four through holes 14 are formed as shown in FIG. 6, but the number of the through holes 14 may be arbitrary, and at least one may be formed.

Further, the male screw portion 11 has an outer diameter substantially the same as the inner diameter of the female screw portion 31 of the faucet holder 30 so as to be insertable and screwed to the female screw portion 31. Further, a male screw corresponding to the female screw portion 31 formed on the inner wall surface of the faucet holder 30 is formed on the outer surface of the male screw portion 11.

Further, the gasket 20 is formed of an elastic member such as rubber, has a predetermined thickness, and is formed in a circular shape. Further, the outer diameter of the washer 20 is substantially the same as the inner diameter of the washer support portion 13, and the washer 20 can be disposed inside the washer support portion 13. In addition, although the inner diameter of the gasket 20 is formed larger than the outer diameter of the male screw portion 11, it is formed at a position on the inner peripheral side of the through hole 14 at a position where it is formed. Thus, when one end surface of the gasket 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, the gasket 20 is placed in position. The outer surface of the male screw portion 11 and the inner surface of the washer support portion 13 cover the through hole 14.

However, since one end surface of the gasket 20 (the end surface facing the one end surface 12 of the plug body 10) is formed flat, when only the gasket 20 and the one end surface 12 of the plug body 10 are disposed to face each other, as shown in the figure As shown in Fig. 8, a state in which a gap is formed between one end surface of the gasket 20 and one end surface 12 of the plug body 10 is formed. In particular, on the inner peripheral side, the gap between one end surface of the gasket 20 and the one end surface 12 of the plug body 10 is increased, and the through hole 14 is opened. On the other hand, as shown in Fig. 9 below, when the gasket 20 is sandwiched by the faucet holder 30 and the one end surface 12 of the plug body 10 in a state of being pressed from both sides, since the gasket is formed of an elastic member, it is generated. In the deformation, one end surface of the gasket 20 is in close contact with the inclined one end surface 12 of the plug body 10, and the through hole 14 is sealed. This will be described in detail in the following description of the operation.

Next, an operation when the inspection is performed using the plug 1 for the water supply pipe having the above configuration will be described with reference to Figs. 8 to 10 .

[action]

First, as shown in FIG. 1, the water supply pipe plug 1 is attached to each faucet holder 30 which comprises each water outlet of the water supply piping 40. Specifically, as shown in FIG. 8, the gasket 20 is disposed such that it faces an end surface 12 of the plug body 10 around the root 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 plug 1 for the water supply pipe is locked into the female screw portion 31 of the faucet holder 30, and the faucet holder 30 is plugged.

At this time, as shown by an arrow Y1 in Fig. 9, the male screw portion 11 of the plug body 10 is locked into the female screw portion 31 of the faucet socket 30 until the gasket 20 of the water supply pipe plug 1 is faucet holder 30 and the plug body 10 is clamped in a state of being moderately pressed from the side faces of both ends. Thus, as shown in FIG. 9, since the gasket 20 is formed of an elastic member, This causes deformation, and the end surface (one end surface) of the gasket 20 facing the one end surface 12 of the plug body 10 is in close contact with the inclined one end surface 12 of the plug body 10, and the through hole 14 is sealed. Further, at this time, the outer circumference of the gasket 20 is in a state of being in close contact with the inner wall surface of the gasket support portion 13 of the plug body 10.

Then, after all the faucet holders 30 are plugged by 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. 1 . At this time, since the gasket 20 is in a state of being in close contact between the faucet holder 30 and the plug body 10 as described above, water leakage does not occur.

Then, if the air remains in the water supply pipe 40, the proper inspection cannot be performed. Therefore, it is necessary to perform the operation of extracting the air in the water supply pipe 40. For this reason, the state in which the plug 1 for the water supply pipe for the faucet holder 30 is attached, that is, the locked state, is released. Specifically, as shown by an arrow Y2 in FIG. 10, the male thread portion 11 is rotated to move the plug body 10 in a direction away from the faucet holder 30. At this time, at least the end surface of the faucet holder 30 and the other end surface of the gasket 20 (the end surface opposite to the one end surface facing the one end surface 12 of the plug body 10) are kept in close contact with each other, and the water supply pipe is used. The installation state of the plug 1 is released.

Then, as shown in FIG. 10, since one end surface of the gasket 20 (the end surface facing the one end surface 12 of the plug body 10) is formed straight, one end surface of the gasket 20 and one end surface 12 of the plug body 10 are formed. A state in which a gap is created. More specifically, the gap between the inner diameter side of the gasket 20 and the one end surface 12 of the plug body 10 becomes large, and the through hole 14 formed in one end surface 12 of the plug body 10 is in an open state. On the other hand, on the outer diameter side of the gasket 20, one end surface of the gasket 20 is in close contact with the one end surface 12 of the plug body 10, and the outer surface of the gasket 20 is in close contact with the inner wall surface of the gasket support portion 13. .

As described above, in a state where a predetermined water pressure is applied to the water supply pipe 40 by the inspection pump 50, the state shown in FIG. 10 is changed. Therefore, the air in the water supply pipe 40 is as The arrows A1, A2, and A3 of Fig. 10 can be dissipated to the inside of the cylinder of the plug body 10. Specifically, the air in the water supply pipe 40 first flows in from the faucet holder 30 through the screw portion of 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. The space between the outer side surface of the male threaded portion 11 of the plug body 10 and the inner side surface of the gasket 20. Thereafter, as shown by an arrow A2, the air flows from the outer side surface of the male screw portion 11 of the plug body 10 and the inner side surface of the gasket 20 to the gap between one end surface of the gasket 20 and one end surface 12 of the plug body 10, As shown by the arrow A3, the through hole 14 opened on one end surface 12 of the plug body 10 is dissipated to the inside of the cylinder.

At this time, it is thought that the water supplied to the water supply pipe 40 is also dissipated to the through hole 14 together with the air of the water supply pipe 40, but even in this case, it is discharged to the inside of the cylinder of the plug body 10, Therefore, the discharged water can be easily recovered. Further, since the end surface of the faucet holder 30 is in close contact with the other end surface of the gasket 20, the outer side surface of the gasket 20 is in close contact with the inner wall surface of the gasket support portion 13, so that water can be prevented from being discharged from other places.

Thereafter, as shown by an arrow Y1 in Fig. 9, the male screw portion 11 of the plug body 10 is locked into the female screw portion 31 of the faucet holder 30 until the gasket 20 of the water supply pipe plug 1 is received by the faucet as shown in Fig. 9 The seat 30 and the plug body 10 are sandwiched in a state of being moderately pressed from the side faces. Thereby, the faucet holder 30 is completely plugged by the water supply pipe plug 1 and can be properly inspected. Further, after the inspection, the male screw portion 11 of the plug body 10 is released from the faucet holder 30, so that it can be easily removed and can be reused as it is.

In summary, by using the plug 1 for the water supply pipe of the present invention, proper inspection can be performed, and it can be easily reused, and the cost of inspection can be reduced. Further, by using the plug 1 for the water supply pipe of the present invention, when the water supply pipe 40 is inspected, it is possible to prevent the water from splashing around. As a result, it is possible to solve the problem that the wall in which the water supply pipe 40 is installed, in particular, the wall surface of the faucet holder 30 is stained with water.

Further, although the case where one end surface 12 of the plug body 10 is formed obliquely is exemplified as described above, it is not limited to being formed obliquely, and may be formed straight. Even in this case, when the mounting state of the water supply pipe plug 1 with respect to the faucet holder 30 is released, the air of the water supply pipe 40 can be extremely small from between the gasket 20 and one end face 12 of the plug body 10. The gap flows into the through hole 14.

Further, although the inner diameter of the gasket 20 is formed to be larger than the outer diameter of the male screw portion 11 of the plug body 10 as described above, it may be formed to have substantially the same diameter. Even in this case, when the mounting state of the water supply pipe plug 1 with respect to the faucet holder 30 is released, the air of the water supply pipe 40 can flow from the small gap between the gasket 20 and the male screw portion 11. Go to the through hole 14.

(Second embodiment)

Next, a second embodiment of the present invention will be described with reference to Figs. 11 to 12 . The plug 1 for a water supply pipe according to the present embodiment has substantially the same configuration as that disclosed in the first embodiment described above, and has the following configuration.

Fig. 11 is a cross-sectional view showing the plug 1 for a water supply pipe, and the plug body 10 is shown in a cross-sectional view taken along line A-A of Fig. 12. However, the hatching is not shown in the cross-sectional view of the plug body 10. Fig. 12 is a view showing the plug body 10 seen from one end side.

As shown in Figs. 11 and 12, on one end surface 12 of the plug body 10 formed in a circular shape, groove portions 12a and 12b having a predetermined depth of a circular shape are formed. Specifically, the groove portions 12a and 12b are formed in a V shape which is recessed in the thickness direction of the one end surface on one end surface 12 of the plug body 10. Further, the groove portion 12a is formed to pass through the circular shape in the through hole 14, and a further groove portion 12b is formed on the inner side.

Therefore, in order to check the water supply pipe plug 1 on the faucet holder 30 after performing the inspection after the above-described extraction air operation, it remains when the air is extracted. Air and water between the gasket 20 and one end surface 12 of the plug body 10 may be housed in the above-described groove portions 12a, 12b. Therefore, it is possible to avoid a situation in which proper inspection cannot be performed due to residual air or water, and proper inspection can always be performed.

(Third embodiment)

Next, a third embodiment of the present invention will be described with reference to Figs. 13 to 16 . The plug 1 for a water supply pipe according to the present embodiment has substantially the same configuration as that disclosed in the first embodiment, but has several configurations.

[structure]

First, as shown in the cross-sectional view of Fig. 13, in the present embodiment, one end surface 12 of the plug body 10 is formed straight. Further, the outer peripheral side of one end surface 12 of the plug body 10 is formed with a recess of a predetermined depth to form a circular recess 12c. The inner diameter of the recessed portion 12c is formed larger than the first washer 21 described later, and the outer diameter of the recessed portion 12c is formed to be larger than the outer diameter of the faucet socket 30, and is substantially the same as the inner diameter of the washer support portion 13. However, the outer diameter of the recess 12c may be formed to be smaller than the outer diameter of the faucet holder 30. Further, the through hole 14 described above is formed in a straight portion of one end surface 12 of the plug body 10.

Further, in the present embodiment, as shown in Figs. 13 and 14, there are two annular washers. First, the inner diameter of the first gasket 21 and the outer diameter of the male thread portion 11 of the plug body 10, particularly the portion corresponding to the root of the male thread portion 11 of the one end surface 12 of the plug body 10, where no male thread is formed The outer diameter is approximately the same. Further, the outer diameter of the first gasket 21 is formed to be smaller than the distance from the center of one end surface 12 of the plug body 10 to the farthest portion of the through hole 14. Further, as shown in FIG. 14, the first gasket 21 is disposed at a root portion of the male screw portion 11 opposed to the one end surface 12 of the plug body 10, and in this state, one end surface of the first gasket 21 (and the plug body) The end faces of the one end surface 12 facing each other are not blocked by the above-mentioned through holes 14.

Further, the inner diameter and the outer diameter of the second washer 22 are formed in correspondence with the annular recess 12c formed on one end surface 12 of the plug body 10 described above. The inner diameter and outer diameter of 12c are substantially the same. Further, since the second washer 22 is housed and disposed in the recessed portion 12c on one end side (the end surface side facing the one end surface 12 of the plug body 10), it can be disposed on the outer peripheral side of the one end surface 12 of the plug body 10. At this time, the outer surface of the second gasket 22 abuts against and covers the inner wall of the gasket support portion 13.

In addition, the thickness (height) of the second gasket 22 is formed thicker (longer) than the first gasket 21. Thereby, as shown in FIG. 14, in a state where the first washer 21 and the second washer 22 are disposed facing one end surface 12 of the plug body 10, the end faces (ends) of the second washer 22 on the opposite side thereof, The end surface (front end side) of the male screw portion 11 is located closer to the end surface (end portion) of the first washer 21 .

[action]

Next, an operation when the inspection is performed using the plug 1 for the water supply pipe having the above configuration will be described with reference to Figs. 14 to 16 .

First, as shown in FIG. 14, the first gasket 21 is disposed such that it faces an end surface 12 around the root of the male screw portion 11 of the plug body 10. Further, on the outer side of the first gasket 21, the second gasket 22 is disposed such that one end surface side thereof is housed in the concave portion 12c formed in 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 locked into the female screw portion 31 of the faucet holder 30 to close the faucet holder 30.

At this time, the male screw portion 11 of the plug body 10 is locked into the female screw portion 31 of the faucet holder 30 until the end surface of the faucet holder 30 is in close contact with the first gasket 21. Then, as shown in Fig. 15, since the second washer 22 is formed of an elastic member, it is deformed by the faucet holder 30 and the plug body 10 in a state of being moderately pressed from the both end faces, and the faucet holder 30 is deformed. The plug body 10 is also in close contact with the outer peripheral side.

Then, after all the faucet holders 30 are plugged by 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. 1 . At this time, since the water outlet of the faucet holder 30 is in a state of being sealed by the male screw portion 11 of the plug body 10 and the first gasket 21, water leakage does not occur.

Then, if the air remains in the water supply pipe 40, the proper inspection cannot be performed. Therefore, it is necessary to perform the operation of extracting the air in the water supply pipe 40. For this reason, the state in which the plug 1 for the water supply pipe for the faucet holder 30 is attached, that is, the locked state, is released. Specifically, as shown by an arrow Y12 in FIG. 16, the male thread portion 11 is rotated to move the plug body 10 in a direction away from the faucet holder 30. At this time, the end surface of the faucet holder 30 is in a state of being away from the other end surface of the first gasket 21 (the end surface opposite to the one end surface facing the one end surface 12 of the plug body 10), or the faucet holder 30 It is not in a state of being in close contact with the first gasket 21 (for example, a contact state). However, the end surface of the faucet holder 30 is kept in close contact with the second gasket 22 located on the outer peripheral side.

Then, as shown in FIG. 16, a gap is formed between the end surface of the water outlet of the faucet holder 30 and the first gasket 21. On the other hand, the outer peripheral side of the end surface of the faucet holder 30 is in a state of being in close contact with the second gasket 22. In this state, since the predetermined water pressure is applied to the water supply pipe 40 by the inspection pump 50, the air in the water supply pipe 40 can be dissipated to the circle of the plug body 10 as indicated by arrows A11 and A12 of FIG. Inside the barrel. Specifically, the air in the water supply pipe 40 first flows in from the faucet holder 30 through the screw portion of 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 A11. A space is formed between the end surface of the faucet socket 30 and the first gasket 21 and between the outer side surface of the first gasket 21 and the inner side surface of the second gasket 22. Thereafter, the air is dissipated into the inside of the cylinder through the through hole 14 opened at one end surface 12 of the plug body 10 as indicated by an arrow A12.

At this time, it is thought that the water supplied to the water supply pipe 40 is also dissipated to the through hole 14 together with the air of the above-described water supply pipe 40, but even in this case It is also discharged to the inside of the cylinder of the plug body 10, so that the discharged water can be easily recovered. Further, since the end surface of the faucet holder 30 is in close contact with the second gasket 22, it is possible to prevent water from being discharged from other places.

Thereafter, the male screw portion 11 of the plug body 10 is locked into the female screw portion 31 of the faucet holder 30 again as shown by the arrow 11 in Fig. 15, until the end face of the faucet holder 30 and the second washer 22 are as shown in Fig. 15. Close to the end. Thereby, the faucet holder 30 is completely plugged by the plug 1 for the water supply pipe, so that proper inspection can be performed. Further, after the inspection, the male screw portion 11 of the plug body 10 is released from the faucet holder 30, so that it can be easily removed and can be reused as it is.

In summary, by using the plug 1 for the water supply pipe of the present invention, proper inspection can be performed and can be easily reused, reducing the cost of inspection. Further, by using the plug 1 for the water supply pipe of the present invention, when the water supply pipe 40 is inspected, it is possible to prevent the water from splashing around. As a result, it is possible to solve the problem that the wall in which the water supply pipe 40 is installed, in particular, the wall surface of the faucet holder 30 is stained with water.

Further, in the above description, the opening of the through hole 14 is not covered by the first gasket 21 and is completely exposed. However, a part of the through hole 14 may be covered by the first gasket 21 or the second gasket 22. That is, at least a portion of the through hole 14 is opened and exposed between the first gasket 21 and the second gasket 22.

(Fourth embodiment)

Next, a fourth embodiment of the present invention will be described with reference to Fig. 17 . The plug 1 for a water supply pipe according to the present embodiment has substantially the same configuration as that disclosed in the above-described third embodiment, and has the following configuration.

Figure 17 is a cross-sectional view showing the plug 1 for a water supply pipe, as shown, on a flat end portion 12 of the plug body 10 formed in a circular shape, that is, a flat portion of an end face 12, forming a predetermined depth of a circular ring shape. Groove portions 12d, 12e. Specifically, the ditch The groove portions 12d and 12e are recessed in a thickness direction of the one end surface 12 on one end surface 12 of the plug body 10 to form a V shape. Further, the groove portion 12d is formed around the root portion of the male screw portion 11, and another groove portion 12e is formed inside the through hole 14 forming position on the outer side. Further, the positions at which the groove portions 12d and 12e are formed are not limited to the above positions.

Therefore, in order to lock the water supply pipe plug 1 into the faucet holder 30 after the above-described extraction air operation, the air and water remaining between the first gasket 21 and the one end surface 12 of the plug body 10 can be It is accommodated in the above-mentioned groove parts 12d and 12e. Therefore, it is possible to avoid a situation in which an appropriate inspection cannot be performed due to residual air or water, and an appropriate inspection can always be performed.

(Fifth Embodiment)

Next, a fifth embodiment of the present invention will be described with reference to Figs. 18 to 20 . The plug 1 for a water supply pipe according to the present embodiment has substantially the same configuration as that disclosed in the first embodiment, but has several configurations. Further, the configuration described below can also be applied to the configurations of the above-described second, third, and fourth embodiments.

[structure]

Fig. 18 is a sectional view showing a plug for a water supply pipe, and Fig. 19 is a view showing a plug body seen from one end side. Further, although the plug body 10 is shown in a cross-sectional view taken along line A-A of Fig. 19, the hatching is not shown in Fig. 18, and the other drawings in the present embodiment are also the same.

As shown in FIG. 18 and FIG. 19, in the male screw portion 11 of the plug body 10 of the present embodiment, a screw hole 16 is formed in the center thereof, and the screw hole 16 penetrates to one end surface 12 of the plug body 10 in the axial direction. The opposite side is a through hole (thread portion side through hole) inside the cylinder, and a female screw is formed on the inner wall surface. Further, the male screw portion 11 is formed with a cross-shaped through hole 17 having a cross-sectional shape that crosses the screw hole 16 and intersects the plug in the axial direction. The opposite side of the one end surface 12 of the plug body 10 is a through hole (thread portion side through hole) inside the cylinder.

Further, the plug body 10 in the present embodiment has a bolt member 18 having a screw body that is screwed to the screw hole 16 from the opposite side of the one end surface 12 of the plug body 10, that is, the cylinder inner side. The bolt member 18 has a screw head portion 18a on one end side of the screw body, and is sized to block a cross-shaped through hole 17 formed in the male screw portion 11 of the plug body 10. Further, a wrench hole 18b for increasing the rotational force by a wrench or the like when the bolt member 18 is screwed to the bolt hole 16 is formed at the center of the screw head portion 18a of the bolt member 18. Further, when the bolt member 18 is inserted into the screw hole 16 of the plug body 10, a third washer 19 made of an elastic member is interposed between the male screw portion 11 of the plug body 10 and the screw head portion 18a. Further, the third washer 19 is formed to be substantially the same size as the screw head portion 18a of the bolt member 18.

Thereby, the bolt member 18 is screwed into the screw hole 16 of the plug body 10 through the third washer 19, so that the screw hole 16 and the cross-shaped through hole 17 are sealed by the screw body, the third washer 19, and the screw head 18a. Plugged in. On the other hand, by removing the bolt member 18 from the screw hole 16 of the plug body 10, the male screw portion 11 of the plug body 10 can be made to communicate with the inside of the cylinder of the plug body 10 from the front end side.

[action]

Next, an operation when the inspection is performed using the plug 1 for the water supply pipe having the above configuration will be described with reference to Figs. 18 and 20 .

First, as shown in FIG. 18, the bolt member 18 is attached to the screw hole 16 of the plug body 10 through the third washer 19, and the screw hole 16 and the cross-shaped through hole 17 are plugged. Further, as indicated by an arrow Y21, the male screw portion 11 of the water supply pipe plug 1 is locked into the female screw portion 31 of the faucet socket 30, and the faucet holder 30 is plugged. Thereafter, predetermined water is applied to the water supply pipe 40 by the inspection pump 50 in the same manner as described above. Press and carry out the work of extracting air and carry out inspection.

Then, after the inspection, in the state in which the water supply pipe plug 1 is attached to the faucet holder 30, the bolt member 18 is removed from the screw hole 16 of the plug body 10 as indicated by an arrow Y22 in FIG. At this time, since the water supply pipe 40 is also applied with the water pressure, the water from the faucet holder 30 can be discharged from the screw hole 16 formed in the male screw portion 11 of the plug body 10 and the cross-shaped through hole 17. However, even if water can be discharged from the screw hole 16 and the cross-shaped through hole 17, since it is discharged only into the inside of the cylinder of the plug body 10, water can be recovered from the other end side of the plug body 10 to suppress the post-inspection. Water splashes around. Therefore, the processing after the inspection is also easy.

Further, the screw hole 16 and the cross-shaped through hole 17 formed in the plug body 10 may have any shape, and the inner wall surface of the screw hole 16 may not be formed with a thread. Further, the bolt member 18 that blocks the screw hole 16 or the cross-shaped through hole 17 is not limited to a screw.

(Sixth embodiment)

Next, a sixth embodiment of the present invention will be described with reference to Figs. 21 to 22 . The plug 1 for a water supply pipe according to the present embodiment has substantially the same configuration as that disclosed in the first embodiment, but has several configurations. Further, the configuration described below can also be applied to the configurations of the above-described second, third, and fourth embodiments.

As shown in Fig. 21, the plug 1 for a water supply pipe according to the present embodiment is formed on the outer side surface of the cylindrical cylindrical wall 15 on the opposite side with respect to the one end surface 12 of the plug body 10, and is formed to surround the outer side surface. A groove 15a of a predetermined depth of one week. The slit 15a is located near an end face 12 of the plug body 10, particularly at the root of the cylindrical wall 15 projecting from the inner side of the one end face 12. Further, the groove shape of the slit 15a is formed, for example, in a V-shaped cross section. Further, the depth of the slit 15a is formed such that the strength of the cylindrical wall 15 with respect to the one end surface 12 can be easily broken and separated.

According to the above configuration, it is not necessary to install the faucet holder 30 such as a faucet after the inspection, and by breaking and separating the cylindrical wall 15 of the plug 1 for the water supply pipe to be installed, it is possible to prevent interference with subsequent operations or actions.

As described above, the present invention has been described with reference to the above embodiments, but the present invention is not limited to the above embodiment. Various changes that can be understood by those skilled in the art can be made within the scope of the invention of the present invention.

1‧‧‧Encapsulation for water supply piping

10‧‧‧embossed ontology

11‧‧‧Yang thread department

12‧‧‧One end

12a, 12b, 12d, 12e‧‧‧ Groove

12c‧‧‧ recess

13‧‧‧Gas Support Department

14‧‧‧through holes

15‧‧‧Cylinder wall

15a‧‧‧ slotting

16‧‧‧Threaded holes

17‧‧‧ Cross shape through hole

18‧‧‧Bolt components

18a‧‧‧ screw head

18b‧‧‧wrench hole

19‧‧‧3rd washer

20‧‧‧Washers

21‧‧‧1st washer

22‧‧‧2nd washer

30‧‧‧Water tap holder

31‧‧‧ Female thread

40‧‧‧Water supply piping

50‧‧‧Check pump

101‧‧‧Check embolization

110‧‧‧ Body Department

111‧‧‧Pushing Department

120‧‧‧ Tape

201‧‧‧Check embolization

210‧‧‧ Body Department

211‧‧‧ male thread department

220‧‧‧Circular washer

221‧‧‧Cylinder

A‧‧‧ Kitchen

B‧‧‧Bathroom

C‧‧‧ washroom

D‧‧‧ Toilet

Fig. 1 is a view for explaining a water supply pipe for inspection using a plug for a water supply pipe according to the present invention.

FIG. 2 is a view schematically showing a configuration of a plug for a water supply pipe according to the present invention.

FIG. 3 is a view schematically showing a configuration of a plug for a water supply pipe according to the present invention.

FIG. 4 is a view schematically showing a configuration of a plug for a water supply pipe according to a first embodiment of the present invention.

Fig. 5 is a view showing a detailed configuration of a plug for a water supply pipe shown in Fig. 4;

Fig. 6 is a view showing the plug body constituting the plug for the water supply pipe shown in Fig. 5 as seen from the one end side.

Fig. 7 is a view showing a gasket constituting the plug for the water supply pipe shown in Fig. 5 as seen from the one end side.

8 is a view showing a state in which the water supply pipe plug shown in FIG. 5 is attached to a faucet holder to perform a water supply pipe inspection.

FIG. 9 is a view showing a state in which the water supply pipe plug shown in FIG. 5 is attached to a faucet holder to perform a water supply pipe inspection.

Figure 10 is a view showing the installation of the plug for the water supply pipe shown in Figure 5 in the faucet bearing A diagram of the situation when the water supply piping is inspected on the seat.

FIG. 11 is a view showing a detailed configuration of a plug for a water supply pipe according to a second embodiment of the present invention.

FIG. 12 is a view showing the plug body constituting the plug for the water supply pipe shown in FIG. 11 as seen from the one end side.

FIG. 13 is a view showing a detailed configuration of a plug for a water supply pipe according to a third embodiment of the present invention.

FIG. 14 is a view showing a state in which the water supply pipe plug shown in FIG. 13 is attached to a faucet holder to perform a water supply pipe inspection.

Fig. 15 is a view showing a state in which the water supply pipe plug shown in Fig. 13 is attached to a faucet holder to perform a water supply pipe inspection.

Fig. 16 is a view showing a state in which the water supply pipe plug shown in Fig. 13 is attached to a faucet holder to perform a water supply pipe inspection.

Fig. 17 is a view showing a detailed configuration of a plug for a water supply pipe according to a fourth embodiment of the present invention.

FIG. 18 is a view showing a detailed configuration of a plug for a water supply pipe according to a fifth embodiment of the present invention.

Fig. 19 is a view showing the plug body constituting the plug for the water supply pipe shown in Fig. 18 as seen from the one end side.

FIG. 20 is a view showing a state after the water supply pipe inspection is performed by attaching the plug for the water supply pipe shown in FIG. 18 to the faucet holder.

Fig. 21 is a view showing a detailed configuration of a plug for a water supply pipe according to a sixth embodiment of the present invention.

FIG. 22 is a view showing a state after the water supply pipe inspection is performed by attaching the plug for the water supply pipe shown in FIG. 21 to the faucet holder.

1‧‧‧Encapsulation for water supply piping

10‧‧‧embossed ontology

11‧‧‧Yang thread department

12‧‧‧One end

13‧‧‧Gas Support Department

14‧‧‧through holes

15‧‧‧Cylinder wall

20‧‧‧Washers

Claims (7)

a plug for a water supply pipe, plugging a water outlet of a water supply pipe and having a socket side threaded portion on an inner side thereof; the water supply pipe plug having: a plug body having a cylindrical shape sealed at one end; a threaded portion protruding from an end surface of the plug body of the plug body, inserted and screwed to the socket side threaded portion; an outer diameter of the plug body formed to be larger than an outer diameter of the threaded portion; a portion of the plug body that is formed around the root portion of the plug body and formed into a circular ring shape, forming a through hole penetrating from the one end surface to the inside of the cylinder of the plug body; and having a gasket, the gasket is a resilient member having a circular thickness and having a predetermined thickness facing the one end surface of the annular plug body; a cylindrical washer support portion is disposed around an end surface of the plug body, the washer The support portion covers the outer circumference of the gasket disposed facing an end surface of the plug body. A plug for a water supply pipe according to the first aspect of the invention, wherein the inner diameter of the annular ring is formed to be larger than an outer diameter of the threaded portion. A plug for a water supply pipe according to the first aspect of the invention, wherein an end surface of the plug body having a circular shape is formed to be inclined from an outer circumferential side to an inner circumferential side of the one end surface so that the inner end side of the one end surface The circumferential side is recessed toward the opposite side of the protruding end side of the threaded portion from the outer peripheral side. The plug for a water supply pipe according to the first aspect of the invention, wherein the gasket is composed of a first gasket and a second gasket; the first gasket has an inner diameter substantially the same as an outer diameter of the thread portion, and is disposed at The threaded portion is attached to a root of one end surface of the plug body; the second washer has an inner diameter larger than an outer diameter of the first washer, and is disposed outside the first washer; setting the first washer and the first The thickness of the two washers so that the first pad a state in which the ring and the second gasket are disposed facing an end surface of the plug body, in a thickness direction of the first gasket and the second gasket, on a side opposite to an end surface side of the plug body The end of the second gasket is located on the protruding end side of the threaded portion compared to the end of the first gasket; at least a portion of the through hole is located between the first gasket and the second gasket. A plug for a water supply pipe according to the first aspect of the invention, wherein a groove portion having a predetermined depth is formed on one end surface of the annular plug body. The plug for a water supply pipe according to the first aspect of the invention, wherein the threaded portion side through hole is provided, and the threaded portion side through hole is along the axial direction of the screw portion, and the threaded portion of the water supply pipe plug is opposed to The insertion end of the socket side threaded portion communicates with the inside of the cylinder of the plug body; and a detachable bolt member is provided, and the bolt member seals the threaded portion side through hole from the cylindrical inner side of the plug body. A plug for a water supply pipe according to the first aspect of the invention, wherein an outer side surface near an end surface of the cylindrical portion of the plug body is provided with a slit having a predetermined depth around the outer side.