JP2015161376A - Packing with falling prevention function used at connection part of stop valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a packing with a falling prevention function for preventing the packing from being removed even if water flow blows out during work by non-water failure by installing and fixing the packing at an inner diameter part of a connection part of a stop valve and to perform a replacing work for the stop valve in a short period of time without being dependent upon a skilled worker.SOLUTION: A packing member arranged between a joint member and a connecting member of a stop valve when the stop valve is replaced forms a fitting part integrally constituted with the packing member, the fitting part constitutes a fitting part of a hollow shape protruded at one side of the packing connected surface of the packing member and the fitting part of the hollow shape of the packing member can be fixed to the inner diameter part of the stop valve connecting part.

Description

The present invention relates to a packing disposed between a joint member and a stop cock connecting member for connecting a water supply pipe branched from a distribution pipe to a stop cock installed on the primary side of a water meter. The present invention relates to a packing with a drop-off preventing function provided on a joining end face of a connection portion of a water stop cock.

A system for supplying water to a general detached house from a water purification plant via a water distribution pipe is laid from the water purification plant to the vicinity of the detached house in each residential area. Further, tap water is supplied by connecting a water supply pipe through a water tap with a saddle.

And the tap water supplied to each house through the water supply pipe is introduced into a water meter box buried in the residential land of each house, and a water stopcock and a water pipe installed in the water meter box It is connected via a meter so that water is supplied to the kitchen, bathroom, washroom, toilet, etc. in each building.

The packing with a drop-off prevention function used in the connection portion of the stop cock according to the present invention is provided to connect the water supply pipe branched from the distribution pipe to the stop cock in the water meter box. The present invention relates to a packing disposed at a tip portion of a joint member for connecting a pipe and a stop cock between the joint member and the stop cock, and in particular, the packing structure of the present invention has a connection portion of the stop cock. It is related with the packing with the fall-off prevention function which can be fitted provided in the internal-diameter part of the joining end surface.

Thus, the system for supplying water to a general detached house according to the present invention, the implementation position of the present invention, and the disadvantages of the conventional packing structure will be described with reference to FIGS. 14 and 15A, 15B, 15C. To do.

In FIG. 14, reference numeral 50 denotes a water distribution pipe buried from the water purification plant and piped to the vicinity of the building of each residential land, and the water distribution pipe 50 is provided with a saddle for branching and supplying tap water to each residential land. A water faucet 51 is provided, and the water supply pipe 52 is introduced through a joint member 54 into a water meter box 53 embedded in each residential land via the saddle-equipped water faucet 51.

The water supply pipe 52 is connected to a water stopcock 56 installed on the primary side 55 in the water meter box 53 via a joint member 54, and a water meter 58 via a stopcock 56 and a joint 57. Water is supplied to a building (not shown) through a water supply pipe 59.
In FIG. 14, the water meter box 53 has side walls 60a, 60b, 60c, and 60d with rib structures having a large side pressure resistance, and has a box shape including a bottom plate 61 and a water meter inspection lid 62. Yes. The arrow 63 of the water supply pipe 52 introduced into the water meter box 53 indicates the direction of water flow in the water supply pipe 52 on the primary side 55, and the arrow 64 indicates the direction of water flow of the water supply pipe 59 to the building side. Yes.

Further, 65 is a cap nut for connecting the water supply pipe 52 and the joint member 54, 66 is a joint cap nut for connecting the joint member 54 and the water stop cock 56, and 67 is a connection of the water stop cock 56 and the joint 57. A joint cap nut 68, a joint cap nut for connecting the joint 57 and the water meter 58, and a joint connecting cap nut 69 for connecting the water meter 58 and the water supply pipe 59 on the building side.

Next, the installation position of the conventional packing structure and the defects of the conventional packing structure will be described with reference to FIGS. 15 (A), (B), and (C). FIG. 15A shows an enlarged cross-sectional view of the main portion of the water meter box 53 in FIG. 14, and FIG. 15B shows the joint member 54, the conventional packing 70, and the water stop shown in FIG. FIG. 15C is a perspective view showing the shape of the conventional packing 70. FIG. In FIG. 15, newly illustrated components are described by adding new reference numerals, but the same reference numerals as those in FIG. 14 indicate the same components.

In FIG. 15A, the water supply pipe 52 is installed on the primary side 55 of the water meter 58 installed in the water meter box 53 by the joint cap nut 66 via the cap nut 65 and the joint member 54. The water stop cock 56 is connected to a water meter 58 via a joint 57 and supplied to a building in the residential land via a water supply pipe 59.

FIG. 15 (B) is an enlarged assembly view showing an exploded shape between the joint member 54 and the water stop cock 56 of FIG. 15 (A), and 65 is a water supply pipe 52 (not shown) on the primary side 55. The cap nut which connects the coupling member 54 is shown. Further, a joint cap nut 66 for connecting the joint member 54 and the water stop cock 56 is provided at the distal end portion 71 of the joint member 54, and the connection of the joint cap nut 66 and the water stop cock 56 is provided. The conventional packing 70 arrange | positioned at the junction part end surface 73 of the part 72 is shown in figure.

Further, the conventional packing 70 shown in FIG. 15B is formed by forming a natural rubber, synthetic rubber, or synthetic resin plate into a ring shape as shown in FIG. A joining portion 74 a joined to the tip portion 71 of the member 54 and a joining portion 74 b joined to the joining portion end surface 73 of the joining portion 72 of the water stopcock 56 are provided.

Thus, the conventional packing 70 is used when water is branched from the distribution pipe 50 and the stop cock 56 installed on the primary side 55 of the water meter 58 is replaced. Since the primary side 55 of the stop cock 56 is not provided with another stop cock for stopping the water flow of the water supply pipe 52 when the stop cock 56 is replaced, the water flow 75 of the water supply pipe 52 is provided. Therefore, the faucet 56 was replaced while water was blown into the water meter box 53.

Therefore, when replacing a new stop cock 56, a conventional packing 70 is disposed between the joint cap nut 66 of the joint member 54 and the joint end face 73 of the connection 72 of the stop cock 56, and the joint The operation of connecting and fixing the joint member 54 to the water stop cock 56 with the cap nut 66 is performed by flowing the conventional packing 70 by the force of the water flow 75, or by placing the conventional packing 70 at the force of the water flow 75. Therefore, it was a very difficult task and forced a troublesome replacement work that required skill and labor.

The present invention improves the above-described conventional packing to reliably arrange a packing used in replacement work of a new water faucet between the joint end faces of the water faucet connecting portion, This greatly improves the work of attaching and fixing the packing and connecting and fixing the joint, and the packing with a drop-off prevention function of the present invention is attached to the inner diameter portion of the joint end surface of the stop cock connection portion. In this way, it is configured so that the packing does not come off even if there is a blowout of water flow due to unrestricted water, and it is possible to shorten the time without depending on a skilled worker, such as replacing the water faucet. I did it.

Prior art documents are not disclosed, and conventional examples are described in paragraph numbers 0005 to 0014.

Thus, the present invention relates to a packing disposed between a joint member and a stop cock connecting member for connecting a water supply pipe branched from a distribution pipe to a stop cock installed on the primary side of a water meter. In particular, the present invention relates to a packing with a drop-off preventing function provided on the joint end face of the connection portion of the water stop cock.

Further, in the present invention, in replacement work of a new stop cock, a conventional packing is disposed between the joint end face of the joint part of the joint member of the joint member and the stop part of the stop cock, The joining and fixing work of the joint members is very difficult because the packing is washed away by the momentum of the water flow and the location of the packing is not determined by the momentum of the water flow. It was made in view of what was forced.

Then, the present invention improves the shape of the packing used in the replacement work of a new water faucet, etc., so that the inner diameter portion of the joint end surface of the joint cap nut of the joint member and the water faucet is surely secured. It can be installed and installed, and it is constructed so that the packing does not come off due to the flow of water flow due to unrestricted water, greatly improving the efficiency of exchanging stopcocks, etc. The above-mentioned stopcock replacement work is intended to provide a packing with a dropout prevention function used for a stopcock connection portion that can be shortened in time without relying on a skilled worker. .

In the present invention, a water supply pipe branched from a water distribution pipe is connected to a water stop cock installed on the primary side of a water meter in a water meter box between the water stop cock and the water stop cock. The packing member disposed between the joint member and the stopcock connection member at the time of replacement is mounted and clamped on the joint end face of the joint stopper and the stopcock connection portion provided at the tip of the joint member, and the joint member A ring-shaped packing member capable of maintaining watertightness between the stop cocks, and a fitting portion formed integrally with the packing member is formed on the packing member, and the fitting portion is a packing joint of the packing member. The water stop which comprised the hollow fitting cylinder part which protruded to the part surface one side, and was able to adhere the hollow fitting cylinder part of this packing member to the internal-diameter part of the junction part end surface of the said stop cock connection part Providing packing with drop-off prevention function used for plug connections That.

Further, in the present invention, the ring-shaped packing member has a fitting member mounting groove having a U-shaped cross-sectional shape opened to the inner diameter side, and the cross-sectional shape of the fitting member mounting groove is The packing member and the hollow fitting tube portion were integrally formed by fitting the flange portion of the hollow fitting tube portion having an L shape.

Further, according to the present invention, the packing member and the hollow fitting tube portion are formed integrally, and the hollow fitting tube portion is provided by providing one or a plurality of split grooves in the fitting tube portion. It is intended to provide a packing with a drop-off preventing function that is used in a water faucet connecting portion configured to add elasticity to the tip portion of the portion.

In an embodiment of the present invention, the ring-shaped packing member is formed with a fitting portion configured integrally with the packing member, and the fitting portion protrudes on one side of the packing joint surface of the packing member. A hollow fitting tube portion is formed, and the hollow fitting tube portion of the packing member is provided with two or a plurality of return protrusions on the tip circumferential portion thereof, so that the two or more It is intended to provide a packing with a drop-off preventing function used for a stop cock connecting portion in which a return protrusion is configured to be fixed to an inner diameter portion of a joint end face of the stop cock connecting portion.

Further, in the present invention, the ring-shaped packing member is formed with a fitting portion configured integrally with the packing member, and the fitting portion is a hollow protruding on one side of the packing joint surface of the packing member. An inner diameter of the joint end face of the stop cock connecting portion is configured by forming a fitting tube portion having a shape and a tapered shape in which the outer diameter of the fitting tube portion increases from the tip portion toward the vicinity of the root portion. The present invention provides a packing with a drop-off preventing function used for a connection portion of a water faucet that is configured such that a tapered hollow cylindrical tube portion can be fixed to the portion.

Furthermore, in the present invention, the ring-shaped packing member is formed with a fitting portion integrally formed with the packing member, and the fitting portion is a hollow protruding on one side of the packing joint surface of the packing member. A fitting cylinder part having a shape is formed, and the outer diameter of the fitting cylinder part is formed in a tapered shape that increases from the tip part toward the vicinity of the root part, on the outer periphery of the root part of the fitting part of the tapered shape. By engraving a relief groove, elasticity is added to the tip of the fitting tube portion, and a tapered fitting tube portion is fixed to the inner diameter portion of the joint end surface of the stop cock connection portion. The present invention provides a packing with a drop-off preventing function used for a connecting portion of a water stop cock that can be configured.

Furthermore, in the present invention, the ring-shaped packing member and the hollow fitting tube portion are integrally molded from synthetic rubber or synthetic resin, or the packing member is molded from synthetic rubber and synthetic resin. The fitting cylinder part to be fitted in the fitting member mounting groove of the packing member has a drop-off preventing function used for the connection part of the water faucet formed separately from a material different from the packing member such as a metal material. Provide packing.

Thus, the present invention improves the shape of the packing used in the replacement work of a new stop cock, etc., so that the inner diameter portion of the joint end face of the joint portion of the joint cap nut and the stop cock of the joint member is improved. It can be securely installed and installed, and even when there is a flow of water flow due to unrestricted water, it is configured so that the packing does not come off due to the flow of water, greatly improving the efficiency of exchanging stopcocks, etc. Provided with a seal with a drop-off preventing function used for the stop cock connection part, which allows the stop cock replacement work to be performed with reduced time without relying on a skilled worker. It is.

The above water supply pipes, joint members connected to the water supply pipes, water supply facility materials, such as the inner diameter portion of the joint end face of the joint between the joint cap nut and the stopcock of the joint member, are each finely standardized. In view of the above, the present invention provides a packing with a drop-off preventing function that can be used without changing the standard of the inner diameter portion, the inner diameter dimension of the joint end face of the connection portion of the stop cock, The efficiency of waterworks work can be greatly improved.

(A) It is a front view explaining Example 1. FIG. (B) It is a side view explaining Example 1. FIG. (C) It is sectional drawing explaining Example 1. FIG. (A) It is a front view explaining the other example of Example 1. FIG. (B) It is a side view explaining the other example of Example 1. FIG. (C) It is sectional drawing explaining the other example of Example 1. FIG. (A) It is an assembly drawing explaining Example 1. FIG. (B) It is explanatory drawing which shows the state which fitted packing. (A) It is a front view explaining Example 2. FIG. (B) It is a side view explaining Example 2. FIG. (C) It is sectional drawing explaining Example 2. FIG. (A) It is a front view explaining the other example of Example 2. FIG. (B) It is a side view explaining the other example of Example 2. FIG. (C) It is sectional drawing explaining the other example of Example 2. FIG. (A) It is an assembly drawing explaining Example 2. FIG. (B) It is explanatory drawing which shows the state which fitted packing. (A) It is a front view explaining Example 3. FIG. (B) It is a side view explaining Example 3. FIG. (C) It is sectional drawing explaining Example 3. FIG. (A) It is a front view explaining the other example of Example 3. FIG. (B) It is a side view explaining the other example of Example 3. FIG. (C) It is sectional drawing explaining the other example of Example 3. FIG. (A) It is an assembly drawing explaining Example 3. FIG. (B) It is explanatory drawing which shows the state which fitted packing. (A) It is a front view explaining Example 4. FIG. (B) It is a side view explaining Example 4. FIG. (C) It is sectional drawing explaining Example 4. FIG. (A) It is an assembly drawing explaining Example 4. FIG. (B) It is explanatory drawing which shows the state which fitted packing. (A) It is a front view explaining the other example of Example 4. FIG. (B) Example 4 is a side view for explaining another example. (C) It is sectional drawing explaining the other example of Example 4. FIG. It is explanatory drawing which shows the state which fitted the other example packing of Example 4. FIG. It is a conventional example and the water supply pipe | tube schematic diagram of this invention. (A) It is explanatory drawing of the conventional stop cock arrangement site | part. (B) It is an assembly drawing which shows the conventional packing arrangement | positioning site | part. (C) It is a perspective view which shows the conventional packing shape.

Thus, the packing with a drop-off prevention function used for the connection portion of the stop cock according to the present invention is provided for connecting the water supply pipe branched from the distribution pipe to the stop cock in the water meter box. In particular, the present invention relates to a packing disposed between the joint member and the stop cock at the tip of the joint member connecting the water supply pipe and the stop cock. The present invention relates to a packing with a drop-off preventing function that can be fitted and provided in an inner diameter portion of a joint end surface of a connection portion of a stopper.

Further, in the present invention, in replacement work of a new stop cock, a conventional packing is disposed between the joint end face of the joint part of the joint member of the joint member and the stop part of the stop cock, The joining and fixing work of the joint members is very difficult because the packing is washed away by the momentum of the water flow and the location of the packing is not determined by the momentum of the water flow. It was made in view of what was forced.

Furthermore, the present invention improves the shape of the packing used in replacement work of a new stop cock, etc., so that the inner diameter portion of the joint end surface of the joint cap nut of the joint member and the stop cock can be reliably secured. It can be installed and installed, and it is constructed so that the packing does not come off due to the flow of water flow due to unrestricted water, greatly improving the efficiency of exchanging stopcocks, etc. The above-mentioned stopcock replacement work is intended to provide a packing with a dropout prevention function used for a stopcock connection portion that can be shortened in time without relying on a skilled worker. .

FIG. 1 is an explanatory view of the shape of a packing member with a drop-off preventing function for explaining a first embodiment of the present invention. In FIGS. 1 (A), (B) and (C), 1 is a ring-shaped packing member, 2a Reference numeral 2b denotes a packing joint surface, 3 denotes a fitting portion formed integrally with the packing member 1, and the fitting portion 3 includes a hollow fitting tube portion 4 protruding toward the packing joint surface 2a. This hollow fitting tube portion 4 includes a tube portion 5 and a flange portion 6 provided at the root portion thereof, and return portions 7a, 7b, 7c, 7d and split grooves 8a, 8b, 8c, 8d.

And the said collar part 6 is provided in the ring-shaped packing member 1, and when the cross-sectional shape fits into the fitting member attachment groove | channel 9 which has the U-shape opened to an inner diameter side, the packing member 1 and The hollow fitting tube portion 4 and the tube portion 5 are integrally connected to each other, and the hollow fitting tube portion 4 and the tube portion 5 are provided with four return portions at the tip thereof. 7a, 7b, 7c, and 7d are provided, and the return portions 7a, 7b, 7c, and 7d are provided in a shape protruding to the outside of the distal end portion of the hollow fitting tube portion 4, and toward the distal direction. The hollow fitting tube portion 4 and the tube portion 5 are given elasticity by the open dividing grooves 8a, 8b, 8c, and 8d, and are formed into an inner diameter portion 19 (shown in FIG. 3) of the joint end surface 17 of the water stopcock connecting portion. It is configured to be easily fitted.

FIGS. 2A, 2B, and 2C are explanatory views of the shape of the packing with a drop-off preventing function for explaining another example of the embodiment 1, and FIGS. 2A, 2B, and 2C. ), 1 is a ring-shaped packing member, 2a and 2b are packing joint surface, 3 is a fitting portion formed integrally with the packing member 1, and the fitting portion 3 projects to the packing joint surface 2a side. The hollow fitting cylinder part 4 is configured, and the hollow fitting cylinder part 4 has four return parts 7a, 7b, 7c, 7d at the tip part via the cylinder part 5. And the split grooves 8a, 8b, 8c, 8d. The return portions 7a, 7b, 7c, 7d are configured as one member via the packing member 1 and the hollow cylindrical portion 5.

The difference between the first embodiment shown in FIG. 1 and the other example shown in FIG. 2 is that the first embodiment molds the ring-shaped packing member 1 with synthetic rubber or synthetic resin, and the fitting member mounting groove 9 of the packing member 1 The hollow fitting cylinder 4 and the cylinder 5 to be mounted are assembled after being separately formed of a material different from that of the packing member 1 such as a metal material. The ring-shaped packing member 1, the hollow-shaped fitting cylinder portion 4, the cylindrical body 5, and the return portions 7 a, 7 b, 7 c, and 7 d are integrally molded from the beginning with synthetic rubber or synthetic resin.

FIG. 3 (A) shows the disassembly between the joint member 10 and the stop cock 11 in order to connect the water supply pipe branched from the distribution pipe to the stop cock installed on the primary side of the water meter in the water meter box. And the packing member 1 of Example 1 or the packing member 1 of the other example which has the same external shape as Example 1 is arrange | positioned, FIG.3 (B) is Example 1 in the stop cock 11 side. The state which mounted | wore the packing member 1 of this is shown.

3 (A) and 3 (B), 12 is a joint surface of the packing member 1 provided at the tip of the joint member 10, and 13 is a joint capable of connecting the stop cock 11 and the joint member 10 by tightening. The cap nut 14 is a female screw engraved on the inner diameter portion of the joint cap nut 13, and the outer diameter portion of the stop cock 11 facing the primary side connection portion 15 of the stop cock 11 is for a joint. A male screw 16 that is screwed into the female screw 14 of the cap nut 13 is engraved. Further, a joint end face 17 of the stop cock connection section is provided on the primary side connection section 15 side of the stop cock 11, and a water flow port 18 is formed at the center of the joint end face 17 of the stop cock connection section. It is opened, and an inner diameter portion 19 for flowing water is formed behind the edge of the flowing water port 18.

As shown in FIG. 3 (A), the packing member 1 disposed facing the joint end surface 17 of the stopcock connecting portion between the joint cap nut 13 and the stopcock 11 is caused by indefinite water from the joint member 10 side. As shown in FIG. 3B, in a situation where there is a blowout of water flow, the fitting cylinder portion 4 of the packing member 1 that is joined to the joining portion end surface 17 of the stop cock connecting portion and formed integrally with the packing member 1. Is fixed to the water inlet 18 and the inner diameter portion 19.

Therefore, in the situation of FIG. 3B, the blowing of water flow from the joint member 10 side is continued, but the packing member 1 is joined to the joint end face 17 of the stop cock connecting portion. The packing member 1 is not swept away by flowing water, or the location of the packing member 1 is not determined by the momentum of the water flow, which greatly improves the replacement work efficiency of the stop cock 11, etc. The replacement work of the stop cock 11 is to provide a packing with a drop-off preventing function used for the connection part of the stop cock 11 which can be performed with reduced time without relying on a skilled worker.

Thus, as shown in FIGS. 1 (A), (B), (C) and FIGS. 2 (A), (B), (C), the first embodiment and other examples of the first embodiment are water distribution pipes. When the water stopcock 11 is replaced between the joint member 10 and the stopcock 11 for connecting the water supply pipe branched from the water stopcock 11 installed on the primary side of the water meter in the water meter box. The packing member 1 disposed between the connecting member of the joint member 10 and the stop cock 11 is a joint end face of the stop cock connecting portion of the stopcock 11 and the joint nut 13 provided at the tip of the joint member 10. 17 is a ring-shaped packing member 1 that is sandwiched and held between the joint member 10 and the water stopcock 11, and the packing member 1 is integrally formed with the packing member 1. 3, and the fitting part 3 protrudes to one side of the packing joint surface 2 a of the packing member 1. The water stopcock is configured such that the fitting tube portion 4 having a shape is formed, and the hollow fitting tube portion 4 of the packing member 1 can be fixed to the inner diameter portion 19 of the joint end surface 17 of the water stopcock joint portion. The present invention provides a packing with a drop-off preventing function used for a connecting portion.

Further, in the first embodiment, the ring-shaped packing member 1 has a fitting member mounting groove 9 having a U-shaped cross-section that opens to the inner diameter side, and the fitting member mounting groove 9 includes the fitting member mounting groove 9. By fitting the flange portion 6 of the hollow fitting tube portion 4 having an L-shaped cross section, the packing member 1 and the hollow fitting tube portion 4 are integrally formed, and the hollow shape By providing one or a plurality of split grooves 8a, 8b, 8c,... In the fitting tube portion 4, elasticity is added to the tip of the hollow fitting tube portion 4, and the hollow fitting is performed. Two or more return portions 7a, 7b, 7c,... Are provided at the distal end of the combined tube portion 4, and the two or more return portions 7a, 7b, 7c,. Drop-off used for a stop cock connecting portion configured to be fixed to the inner diameter portion 19 of the joint end surface 17 of the plug joint portion. It is intended to provide a stop function with packing.

Furthermore, in Example 1 and another example of Example 1, the ring-shaped packing member 1 and the hollow fitting cylinder portion 4 are integrally formed of synthetic rubber or synthetic resin, or the ring The shaped packing member 1 is molded from synthetic rubber and synthetic resin, and the hollow fitting cylinder portion 4 mounted in the fitting member mounting groove 9 of the packing member 1 is made of a material different from the packing member, such as a metal material. It is intended to provide a packing with a drop-off preventing function formed separately.

FIG. 4 is an explanatory view of the shape of a packing member with a drop-off preventing function for explaining a second embodiment of the present invention. In FIGS. 4 (A), (B), and (C), 1 is a ring-shaped packing member, 2a 2b is a packing joint surface, 3 is a fitting portion formed integrally with the packing member 1, and the fitting portion 3 is a hollow fitting tube portion protruding toward the joint surface 2a side of the packing member. 4 is configured. In addition, the hollow fitting tube portion 4 is provided with return protrusions 20a and 20b at the tip circumferential portion of the fitting tube portion 4, so that a plurality of return protrusions 20a and 20b are provided with the water stoppage. The plug connecting portion is configured to be securely fixed to the inner diameter portion 18 of the joint end face 17.

5A, 5B, and 5C illustrate another example of the second embodiment, where 1 is a ring-shaped packing member, 2a and 2b are packing joint surfaces, and 3 is a packing member. 1, the fitting portion 3 constitutes a hollow fitting tube portion 4 protruding toward the joint surface 2a side of the packing member, and this hollow fitting tube In the portion 4, the return protrusions 20 a and 20 b are provided on the tip circumferential portion of the fitting tube portion 4, so that the return protrusions 20 a and 20 b are connected to the inner diameter portion of the joint end surface 17 of the stop cock connection portion It was configured to be able to be firmly fixed to 19.

The difference between the second embodiment shown in FIG. 4 and the other example shown in FIG. 5 is that the second embodiment forms the ring-shaped packing member 1 from synthetic rubber or synthetic resin, and the fitting member mounting groove 9 of the packing member 1 The hollow fitting cylinder 4 and the return protrusions 20a and 20b to be mounted are separately formed of a material different from that of the packing member 1 such as a metal material, and are assembled as shown in FIG. Another example is that the ring-shaped packing member 1, the hollow fitting tube portion 4, and the return protrusions 20 a and 20 b are integrally molded from the beginning with synthetic rubber or synthetic resin.

FIG. 6 (A) shows the disassembly between the joint member 10 and the stop cock 11 in order to connect the water supply pipe branched from the distribution pipe to the stop cock installed on the primary side of the water meter in the water meter box. And the packing member 1 of Example 2 or the packing member 1 of the other example which has the same external shape as Example 2 is arrange | positioned, FIG.6 (B) is Example 2 in the stop cock 11 side. The state which mounted | wore the packing member 1 of this is shown.

6 (A) and 6 (B), 12 is a joint surface of the packing member 1 provided at the tip of the joint member 10, and 13 is a joint capable of connecting the stop cock 11 and the joint member 10 by tightening. The cap nut 14 is a female screw engraved on the inner diameter portion of the joint cap nut 13, and the outer diameter portion of the stop cock 11 facing the primary side connection portion 14 of the stop cock 11 is for a joint. A male screw 16 that is screwed into the female screw 14 of the cap nut 13 is engraved. Further, a joint end face 17 of the stop cock connection section is provided on the primary side connection section 15 side of the stop cock 11, and a water flow port 18 is formed at the center of the joint end face 17 of the stop cock connection section. It is opened, and an inner diameter portion 19 for flowing water is formed behind the edge of the flowing water port 18.

As shown in FIG. 6 (A), the packing member 1 disposed between the joint cap nut 13 and the stop cock 11 so as to oppose the joint end face 17 of the stop cock connecting portion is caused by unrestricted water from the joint member 10 side. As shown in FIG. 6 (B) under the situation where there is a blowout of water flow, it is fitted to the joint end face 17 of the stop cock connection portion by the return projections 20a and 20b, and is formed integrally with the packing member 1. The fitting cylinder portion 4 of the packing member 1 is securely fixed to the water flow port 18 and the inner diameter portion 19.

Therefore, in the situation of FIG. 6 (B), the blowing of the water flow from the joint member 10 side is continued, but the packing member 1 is joined to the joint end face 17 of the stop cock connecting portion. The packing member 1 is not swept away by flowing water, or the location of the packing member 1 is not determined by the momentum of the water flow, which greatly improves the replacement work efficiency of the stop cock 11, etc. The replacement work of the stop cock 11 is to provide a packing with a drop-off preventing function used for the connection part of the stop cock 11 which can be performed with reduced time without relying on a skilled worker.

Further, in the second embodiment and the other example of the second embodiment, a ring-shaped packing member 1 and a fitting portion 3 configured integrally with the packing member 1 are formed, and the fitting portion 3 is formed by the packing member. 1 has a hollow fitting tube portion 4 projecting on one side of the packing joint surface 2a, and the hollow fitting tube portion 4 of the packing member 1 has two or more return portions on its circumferential edge. By providing the projections 20a, 20b, 20c,..., The two or a plurality of return projections 20a, 20b, 20c,... Are formed on the inner diameter portion 19 of the joint end surface 17 of the stop cock connecting portion. This is a packing with a drop-off preventing function used for a connection portion of a water faucet that can be securely fixed.

FIG. 7 is an explanatory view of the shape of a packing with a drop-off preventing function for explaining a third embodiment of the present invention. 7 (A), (B) and (C), 1 is a ring-shaped packing member, 2a and 2b are packing joint surfaces, and 3 is a fitting portion formed integrally with the packing member 1, The fitting portion 3 constitutes a hollow fitting cylinder portion 4 projecting toward the packing joint surface 2a, and the hollow fitting cylinder portion 4 is provided with a flange portion 6 provided at the base portion thereof. And a fitting taper 21 and a split groove 8a having a shape in which the diameter of the distal end portion is narrowed toward the flowing water port 18 and the outer diameter of the fitting cylinder portion is increased from the distal end portion toward the vicinity of the root portion. .

And the said collar part 6 is provided in the ring-shaped packing member 1, and when the cross-sectional shape fits into the fitting member attachment groove | channel 9 which has the U-shape opened to an internal diameter side, the packing member 1 is attached. And the hollow fitting tube portion 4 are integrally formed. The hollow fitting tube portion 4 is provided with a fitting taper 21 and a split groove 8a on the outer peripheral portion at the tip. The fitting taper 21 is provided with elasticity to the hollow fitting tube portion 4 by the split groove 8a that opens toward the end of the hollow fitting tube portion 4 and is used for the stopcock connection portion. It is configured so that it can be easily and reliably fitted to the inner diameter portion 19 (shown in FIG. 9) of the joint end face 17.

8A, 8 </ b> B, and 8 </ b> C illustrate another example of the third embodiment, where 1 is a ring-shaped packing member, 2 a and 2 b are packing joint surfaces, and 3 is an integral part of the packing member 1. The fitting portion 3 is formed, and the fitting portion 3 constitutes a hollow fitting tube portion 4 protruding toward the joint surface 2a side of the packing member. The tip 21 is provided with a fitting taper 21 and a split groove 8a, and the packing member 1 and the hollow fitting cylinder 4 are configured as one member.

The difference between the third embodiment shown in FIG. 7 and the other example shown in FIG. 8 is that the ring-shaped packing member 1 is molded from synthetic rubber or synthetic resin in the third embodiment, and the fitting member mounting groove 9 of the packing member 1 is formed. The hollow fitting cylinder 4 and the cylinder 5 to be mounted are assembled after being separately formed of a material different from that of the packing member 1 such as a metal material. The ring-shaped packing member 1 and the hollow fitting tube portion 4 are integrally molded from the beginning with synthetic rubber or synthetic resin.

FIG. 9 (A) shows the joint between the joint member 10 and the stop cock 11 in order to connect the water supply pipe branched from the distribution pipe to the stop cock installed on the primary side of the water meter in the water meter box. Then, the packing member 1 of Example 3 or another example of the packing member 1 having the same external shape as that of Example 3 is arranged. FIG. 9B shows Example 3 on the stop cock 11 side. The state which mounted | wore the packing member 1 of this is shown.

9A and 9B, 12 is a joint surface of the packing member 1 provided at the tip of the joint member 10, and 13 is a joint capable of connecting the water stopcock 11 and the joint member 10 by tightening. The cap nut 14 is a female screw engraved on the inner diameter portion of the joint cap nut 13, and the outer diameter portion of the stop cock 11 facing the primary side connection portion 14 of the stop cock 11 is for a joint. A male screw 16 that is screwed into the female screw 14 of the cap nut 13 is engraved. Further, a joint end face 17 of the stop cock connection section is provided on the primary side connection section 15 side of the stop cock 11, and a water flow port 18 is formed at the center of the joint end face 17 of the stop cock connection section. It is opened, and an inner diameter portion 19 for flowing water is formed behind the edge of the flowing water port 18.

As shown in FIG. 9 (A), the packing member 1 disposed facing the joint end face 17 between the joint cap nut 13 and the water stopper 11 has a situation in which there is a blowout of water flow from the joint member 10 side due to indefinite water. As shown in FIG. 9B below, the packing member is integrally formed with the packing member 1 by being fitted to the joint end face 17 of the stop cock connecting portion by the fitting taper 21 of the fitting cylinder portion 4. One fitting cylinder portion 4 can be reliably and quickly fixed to the water flow port 18 and the inner diameter portion 19.

Therefore, in the situation of FIG. 9B, the blowing of water flow from the joint member 10 side is continued, but the packing member 1 is joined to the joint end face 17 of the stop cock connecting portion. The packing member 1 is not swept away by flowing water, or the location of the packing member 1 is not determined by the momentum of the water flow, which greatly improves the replacement work efficiency of the stop cock 11, etc. The replacement work of the stop cock 11 is to provide a packing with a drop-off preventing function that is used for a stop cock connecting portion that can be shortened in time without relying on a skilled worker.

Further, in the third example and the other examples of the third example, the packing member 1 and the hollow fitting tube portion 4 are integrally formed, and one or more of the tapered hollow fitting tube portion 4 is provided. By providing the split grooves 8a, 8b, 8c,..., Elasticity is added to the distal end portion of the hollow fitting tube portion 4, and the inner diameter portion 19 of the joint end surface 17 of the stop cock connecting portion. Further, the present invention provides a packing with a drop-off preventing function used for a connecting portion of a water faucet in which a hollow fitting tube portion 4 with a taper can be fixed easily and reliably.

FIG. 10 is an explanatory view of the shape of a packing with a drop-off preventing function for explaining a fourth embodiment of the present invention. 10 (A), (B), and (C), 1 is a ring-shaped packing member, 2a and 2b are packing joint surfaces, and 3 is a fitting portion formed integrally with the packing member 1, The fitting part 3 constitutes a hollow fitting cylinder part 4 protruding toward the packing joint part surface 2a, and the hollow fitting cylinder part 4 is a flange part provided at the root part 22 thereof. 6 and a fitting taper 21 having a shape in which the outer diameter of the fitting cylinder portion increases from the tip portion toward the vicinity of the root portion.

And the said collar part 6 is provided in the ring-shaped packing member 1, and when the cross-sectional shape fits into the fitting member attachment groove | channel 9 which has the U-shape opened to an internal diameter side, the packing member 1 is attached. And the hollow fitting tube portion 4 are integrally formed, and the hollow fitting tube portion 4 is provided with an escape groove 23 on the outer periphery of the root portion 22. The escape groove 23 adds elasticity to the distal end portion of the hollow fitting tube portion 4 and attaches the fitting tube portion 4 to the inner diameter portion 19 of the joint end surface 17 of the stop cock joint portion. In addition, the clearance groove 23 is recessed inward from the starting point so that it can be easily fixed to the inner diameter portion 19. And the relief groove 23 is carved in the root part 22 of the hollow fitting cylinder part 4, and the said packing junction part surface 2a closely_contact | adheres to the junction part end surface 17 of the stop cock connection part shown in FIG. This can improve the water tightness of the packing member 1. Reference numeral 21 denotes a fitting taper provided at the outer periphery of the distal end of the hollow fitting cylinder portion 4, and the fitting taper has a shape in which the diameter of the distal end portion is narrowed toward the flowing water port 18.

FIG. 11 (A) shows the connection between the joint member 10 and the stop cock 11 in order to connect the feed pipe branched from the distribution pipe to the stop cock 11 installed on the primary side of the water meter in the water meter box. FIG. 11 (B) shows a state in which the packing member 1 with the escape groove 23 of Example 4 is mounted on the water faucet 11 side. Yes.

11 (A) and 11 (B), 12 is a joint surface of the packing member 1 provided at the tip of the joint member 10, and 13 is a joint capable of connecting the water stopcock 11 and the joint member 10 by tightening. The cap nut 14 is a female screw engraved on the inner diameter portion of the joint cap nut 13, and the outer diameter portion of the water stopcock 11 provided to face the primary side connection portion 15 of the water stopcock 11. Is engraved with a male screw 16 which is screwed into the female screw 14 of the joint cap nut 13. Further, a joint end face 17 of the stop cock connection section is provided on the primary side connection section 15 side of the stop cock 11, and a water flow port 18 is formed at the center of the joint end face 17 of the stop cock connection section. It is opened, and an inner diameter portion 19 for flowing water is formed behind the edge of the flowing water port 18.

As shown in FIG. 11 (A), the packing member 1 disposed between the joint cap nut 13 and the stop cock 11 so as to oppose the joint end face 17 of the stop cock connecting portion is continuously connected from the joint member 10 side. As shown in FIG. 11 (B) under the situation where there is a water flow blown out by water, the fitting cylinder of the packing member 1 joined to the joint end face 17 of the stop cock connecting portion and integrally formed with the packing member 1 The portion 4 is fixed to the water inlet 18 and the inner diameter portion 19.

Therefore, in the situation of FIG. 11B, the blowout of water flow from the joint member 10 side is continued, but the packing member 1 has an outer periphery of the root portion 22 of the hollow fitting cylinder portion 4. A relief groove 23 is formed on the top, and is tightly joined in a planar manner to the joint end face 17 of the stop cock connecting portion to improve water tightness, and the packing member 1 is caused to flow by blowing off running water. The arrangement part of the packing member 1 is not determined by the momentum of the water flow, and the replacement work efficiency of the stop cock 11 and the like is greatly improved. The replacement work of the stop cock 11 is a skillful work. It is intended to provide a packing with a drop-off preventing function used for the connection portion of the water stop cock 11 that can be shortened without relying on a person.

Thus, in Example 4, as shown in FIGS. 10A, 10 </ b> B, and 10 </ b> C, the water supply pipe branched from the water distribution pipe is installed on the primary side of the water meter in the water meter box. Between the joint member 10 for connecting to the stop cock 11 and the stop cock 11, the packing disposed between the joint member 10 and the primary side connection portion 15 of the stop cock 11 when the stop cock 11 is replaced. The structure of the member 1 is formed with a fitting portion 3 formed integrally with the packing member 1, and the fitting portion 3 has a fitting taper 21 protruding on one side of the packing joint surface 2 a of the packing member 1. The hollow fitting tube portion 4 is formed by forming a relief groove 23 on the outer peripheral surface of the root portion 22 of the packing member 1 and the hollow fitting tube portion 4. 4 is provided with elasticity at the tip, and a hollow shape is formed in the inner diameter portion 19 of the joint end surface 17 of the stop cock connecting portion. And provides a high packing member 1 of watertightness that the fitting tube portion 4 and easily securably configuration.

FIGS. 12A, 12B, and 12C are explanatory views of the shape of the packing with a drop-off preventing function for explaining another example of the fourth embodiment of the present invention. FIG. 12A, FIG. In (C), 1 is a ring-shaped packing member, 2a and 2b are packing joint part surfaces, 3 is a fitting part formed integrally with the packing member 1, and the fitting part 3 is a packing joint part surface. The hollow fitting cylinder portion 4 projecting toward the 2a side is configured, and the hollow fitting cylinder portion 4 is provided with a relief groove 23 on the outer periphery of the root portion 22 thereof. The groove 23 adds elasticity to the distal end portion of the hollow fitting tube portion 4 so as to attach the fitting tube portion 4 to the inner diameter portion 19 of the joint end surface 17 of the water stop cock joint portion. It is configured to be able to be fixed to the inner diameter portion 19 easily. And the relief groove 23 is carved in the root part 22 of the hollow fitting cylinder part 4, and the said packing junction part surface 2a closely_contact | adheres to the junction part end surface 17 of the stop cock connection part shown in FIG. This can improve the water tightness of the packing member 1. In addition, 21 is a taper for fitting provided in the front-end | tip outer peripheral part of the hollow fitting cylinder part 4. FIG.

FIG. 13 shows a state in which a packing member 1 with a relief groove 23 for explaining another example of the fourth embodiment is attached to the stop cock 11 side. In FIG. 13, 12 is a joint surface of the packing member 1 provided at the tip of the joint member 10, 13 is a joint cap nut capable of connecting the stop cock 11 and the joint member 10 by tightening, and 14 is a joint. A joint nut 15 is provided on the outer diameter portion of the water stopcock 11 provided opposite to the internal connection portion 15 of the water stopcock 11. A male screw 16 that is screwed into the female screw 14 is engraved. Further, a joint end face 17 of the stop cock connection section is provided on the primary side connection section 15 side of the stop cock 11, and a water flow port 18 is formed at the center of the joint end face 17 of the stop cock connection section. It is opened, and an inner diameter portion 19 for flowing water is formed behind the edge of the flowing water port 18.

And the packing member 1 arrange | positioned facing the joint part end surface 17 of a stop cock connection part between the cap nut 13 and the stop cock 11 shown in FIG. 13 is the water flow by the unaltered water from the joint member 10 side. As shown in FIG. 13 under a situation where there is a blowout, the fitting cylinder portion 4 of the packing member 1 joined to the joint end surface 17 of the water faucet connection portion and formed integrally with the packing member 1 is connected to the water outlet 18. Fixed to the inner diameter portion 19.

In the fourth embodiment and the other examples of the fourth embodiment, the ring-shaped packing member 1 is formed with a fitting portion 3 configured integrally with the packing member 1, and the fitting portion 3 is formed of the packing member 1. 2a, a tapered hollow fitting tube portion 4 projecting on one side of the packing joint surface 2a is formed, and an escape groove 23 is formed on the outer periphery of the packing member 1 and the root portion 22 of the hollow fitting tube portion 4. By providing elasticity to the tip of the hollow fitting tube portion 4, the hollow fitting tube portion 4 having a taper is formed on the inner diameter portion 19 of the joint end surface 17 of the stopcock joint portion. The present invention provides a packing with a drop-off preventing function that is used in a connection portion of a water stop cock that is configured to be fixed.

Thus, in the present invention, the water supply pipe branched from the water distribution pipe is connected between the joint member 10 and the stop cock 11 for connecting to the stop cock installed on the primary side of the water meter in the water meter box. The packing member 1 disposed between the joint member 10 and the stopcock 11 connecting member when the stopcock 11 is replaced includes a joint nut 13 and a stopcock connector provided at the tip of the joint member 10. A ring-shaped packing member 1 that is attached to and sandwiched by the joint end surface 17 and can maintain watertightness between the joint member 10 and the water stopcock 11. The packing member 1 is formed integrally with the packing member 1. A fitting portion 3 is formed, and the fitting portion 3 constitutes a hollow fitting cylinder portion 4 protruding to one side of the packing joint surface 2a of the packing member 1, and the hollow fitting of the packing member 1 is formed. The cylindrical portion 4 is connected to the stop cock connecting portion of the stop cock 11. There is provided a disengagement prevention function packing used for connection of the stop cock, characterized in that the securably configured on the inner diameter portion 19 of the part edge 17.

Further, in the present invention, the ring-shaped packing member 1 has a fitting member mounting groove 9 having a U-shaped cross-section that opens to the inner diameter side, and the fitting member mounting groove 9 includes the fitting member mounting groove 9. A water faucet connecting portion that integrally forms the packing member 1 and the hollow fitting cylinder portion 4 by fitting the flange portion 6 of the hollow fitting cylinder portion 4 having an L-shaped cross section. It is a packing with a drop-off preventing function used for the above.

Further, in the present invention, the packing member 1 and the hollow fitting cylinder part 4 are integrally formed, and the fitting cylinder part 4 is provided with one or a plurality of split grooves 8a, 8b, 8c,. It is a packing with a drop-off preventing function that is used in a connecting portion of a water stop cock that is configured to add elasticity to the distal end portion of the hollow fitting tube portion 4 by being provided.

In the present invention, the ring-shaped packing member 1 is formed with a fitting portion 3 formed integrally with the packing member 1, and the fitting portion 3 is a packing joint surface of the packing member 1. 2a comprises a hollow fitting tube portion 4 protruding on one side, and the hollow fitting tube portion 4 of the packing member 1 has two or more return protrusions 20a, 20b on the tip circumferential portion thereof. 20c, the two or more return projections 20a, 20b, 20c, etc. can be fixed to the inner diameter portion 19 of the joint end face 17 of the stop cock connecting portion. The present invention provides a packing with a drop-off preventing function used for a water faucet connection.

Further, in the present invention, the ring-shaped packing member 1 is formed with a fitting portion 3 formed integrally with the packing member 1, and the fitting portion 3 is a packing joint surface of the packing member 1. 2a By forming a hollow fitting tube portion 4 protruding on one side, and forming the outer diameter of the fitting tube portion 4 into a tapered shape that increases from the tip portion toward the vicinity of the root portion, the water stop cock 11 is provided with a drop-off preventing function used for a stop cock connection portion in which a tapered hollow fitting cylinder portion 4 can be fixed to an inner diameter portion 19 of a joint end face 17 of the stop cock connection portion. Is.

Further, in the present invention, the ring-shaped packing member 1 is formed with a fitting portion 3 integrally formed with the packing member 1, and the fitting portion 3 is a packing joint surface of the packing member 1. 2a A hollow fitting tube portion 4 projecting on one side is formed, and the outer diameter of the fitting tube portion 4 is formed in a tapered shape that increases from the tip portion toward the vicinity of the root portion 22, and the taper shape is attached. A relief groove 23 is formed on the outer periphery of the root portion 22 of the fitting cylinder portion 4 so as to add elasticity to the tip end portion of the fitting cylinder portion 4. A packing with a drop-off preventing function is provided which is used for a connection portion of a water stop cock in which a tapered fitting tube portion 4 can be fixed to an inner diameter portion 19 of a joint end face 17.

Furthermore, in the present invention, the ring-shaped packing member 1 and the hollow fitting tube portion 4 are integrally formed of synthetic rubber or synthetic resin, or the packing member 1 is made of synthetic rubber or synthetic resin. The hollow fitting cylinder portion 4 that is molded by the above and fitted in the fitting member mounting groove 9 of the packing member 1 is formed as a water stopcock that is formed separately from a material different from that of the packing member 1 such as a metal material. It is intended to provide a packing with a drop-off preventing function used for the connecting portion.

In Embodiments 1 to 4 of the present invention, the shape of the packing used in the replacement work of a new stop cock is improved as described above, so that the joint cap nut of the joint member and the stop cock are connected. It can be securely placed and mounted on the inner diameter part of the joint end face of the part, and even under circumstances where there is a blowout of water flow due to uninterrupted water, the water flow prevents the packing from coming off, It is intended to greatly improve the efficiency of exchanging taps, etc., and the exchanging operation of the stop cock is used for a stop cock connecting portion that can be shortened without relying on a skilled worker. A packing with a drop-off prevention function is provided.

In addition, water supply facilities, joint members connected to the water supply pipe, the inner diameter of the joint end face of the joint between the joint cap nut and the stop cock of the joint member, etc. are each finely standardized. In view of this, the present invention does not use a different member by changing the standard of the inner diameter part shape, inner diameter part size, etc. of the joint end surface of the connection part of the water faucet, but using a conventional member. The present invention provides a packing with a dropout prevention function that can be used, and can greatly improve the efficiency of waterworks work.

1 Packing member 2a, 2b Packing joint surface
DESCRIPTION OF SYMBOLS 3 Fitting part 4 Hollow fitting cylinder part 5 Cylinder part 6 Gutter part 7a, 7b, 7c, 7d Return part 8a, 8b, 8c, 8d Split groove 9 Fitting member attachment groove 10 Joint member 11 Water stopcock 12 Joint surface 13 Joint cap nut 14 Female screw 15 Primary side connection portion 16 Male screw 17 Joint end surface 18 of the stopcock connection portion Water flow port 19 Inner diameter portions 20a, 20b, 20c ... Return projection portion 21 Taper for fitting 22 Root part 23 Escape groove

Claims (7)

Between the water stopcock and the joint member for connecting the water supply pipe branched from the water distribution pipe to the water stopcock installed on the primary side of the water meter in the water meter box,
When replacing the stop cock, the packing member disposed between the joint member and the stop cock connecting member is attached and clamped to the joint end face of the joint stopper and the stop cock connecting portion provided at the tip of the joint member. A ring-shaped packing member capable of maintaining watertightness between the joint member and the stop cock,
The packing member is formed with a fitting portion formed integrally with the packing member,
The fitting portion constitutes a hollow fitting cylinder portion protruding to one side of the packing joint surface of the packing member,
A packing with a drop-off preventing function used for a stop cock connecting portion, wherein the hollow fitting cylinder portion of the packing member is configured to be fixed to an inner diameter portion of a joint end face of the stop cock connecting portion. . The ring-shaped packing member has a fitting member mounting groove having a U shape whose cross-sectional shape opens to the inner diameter side,
The packing member and the hollow fitting cylinder part are integrally configured by fitting the flange part of the hollow fitting cylinder part having a L-shaped cross section in the fitting member mounting groove. A packing with a drop-off preventing function used for a connecting portion of a water stop cock according to claim 1 characterized by the above. The packing member and the hollow fitting tube portion are configured integrally,
3. The structure according to claim 1, wherein one or a plurality of split grooves are provided in the fitting tube portion so as to add elasticity to the tip portion of the hollow fitting tube portion. A packing with a drop-off preventing function used for a stop cock connecting part. By providing two or a plurality of return protrusions at the tip circumferential part of the fitting cylinder part,
The water stop according to any one of claims 1 to 3, wherein the two or a plurality of return protrusions are configured to be fixed to an inner diameter portion of a joint end surface of the stop cock connecting portion. Packing with a drop-off prevention function used for the plug connection. The outer diameter of the fitting tube portion is configured to have a tapered shape that increases from the tip portion toward the vicinity of the root portion, and the connecting portion of the water faucet according to any one of claims 1 to 3. Packing with drop-off prevention function used The outer diameter of the fitting tube portion is configured in a tapered shape that increases from the tip toward the vicinity of the root,
By engraving a relief groove on the outer periphery of the base of the tapered fitting cylinder,
It is configured to add elasticity to the distal end portion of the fitting tube portion, and a tapered fitting tube portion is configured to be fixed to an inner diameter portion of a joint portion end surface of the stop cock connecting portion. A packing with a drop-off preventing function used for the connection portion of the water stop cock according to claim 1. The packing member and the fitting tube portion are integrally molded with synthetic rubber or synthetic resin, or the packing member is molded with synthetic rubber and synthetic resin,
7. The fitting cylinder portion mounted in the fitting member mounting groove of the packing member is formed separately from a material different from that of the packing member, such as a metal material. Packing with a drop-off prevention function used for the connection part of the water stop cock described in Crab.