JP7410577B2 - Faucet pillar and spout adapter - Google Patents

Description

The present invention relates to a faucet column having a spout section installed in a water riser pipe installed outdoors, and a faucet adapter suitable for use with this faucet column.

Conventionally, faucet poles with water outlets are often installed in outdoor areas such as gardens of houses, and especially in cold regions, anti-freeze type faucets are installed to prevent freezing. Water faucet pillars are often installed. By the way, with anti-freeze type faucet pillars, it is usually necessary to close the anti-freeze faucet and drain water during the cold season, which poses the problem of cumbersome management. Therefore, in order to solve this problem, the present applicant has already developed an antifreeze faucet pillar equipped with an automatic water draining mechanism that allows water to be drained automatically when the outside air temperature is below a set temperature, as disclosed in Patent Document 1. proposed by.

The antifreeze faucet pillar equipped with an automatic water drain mechanism described in Document 1 has a rational mechanism that allows water to drain automatically when the outside temperature is below a set temperature, making it possible to perform water supply and drain operations more accurately and efficiently. The purpose is to provide an antifreeze faucet pillar that can be easily installed, and specifically, it includes a water valve mechanism with a water drain mechanism, a rising water channel, a water outlet, an operating part, and a water drain mechanism. , an intake cutoff valve that opens and closes the communication section between the rising water passage and the water outlet, and an intake opening/closing mechanism for automatic water draining that communicates with the rising water passage. It has an air intake port that communicates with the air intake port, and a ventilation passage that communicates with the rising water passage through an intake communication part provided below the communication part, and closes the ventilation passage when water comes out, and There is an intake check valve that opens the air passage, and an air intake valve that closes the air passage when the outside temperature is higher than the set temperature and opens the air passage so that water can be drained automatically when the outside temperature is below the set temperature. It is configured by providing a temperature sensing valve section.

Japanese Patent Application Publication No. 2016-180287

However, the antifreeze faucet pillar equipped with the automatic water draining mechanism described in Patent Document 1 mentioned above also had the following problems to be solved.

In other words, the rising waterway (water supply standpipe) is equipped with a water outlet (water spout), and the water outlet has a built-in intake check valve and thermoelement that open and close based on water temperature detection. When the water is wet, the antifreeze valve automatically closes, and the residual water in the vertical waterway is drained from the drain section. On the other hand, since water remains inside the water outlet, the residual water in this water outlet is normally drained from the water outlet (water outlet) at the tip of the water outlet, but there is no intake passage and the water outlet There was a problem in that the surface tension generated in the process prevented smooth discharge.

In the end, in this case, drainage from the water spout is not sufficient, resulting in freezing inside the water outlet, or freezing in the form of icicles at the outlet of the water outlet, making it difficult for users to use the water. There was also the issue of not being able to use it quickly.

An object of the present invention is to provide a faucet column and a spout adapter that solve the problems existing in the background art.

In order to solve the above-mentioned problems, the faucet pillar 1 according to the present invention includes a water drain Pr when configuring the faucet pillar including a water spout 3 disposed on a water riser pipe 2 installed outdoors. At the time of water stop, Pc is provided with a drainage structure Mi capable of discharging at least the residual water Wr inside from the spout 3 to the outside, and a part of the inner diameter Li of the water passage R reaching the tip of the spout 3 is arranged in the axial direction. Fs is characterized in that it is formed by a tapered surface 4t that gradually becomes larger in diameter as it goes to the downstream side Fsd, and the tip 4ts of this tapered surface 4t is formed as the tip of the water spout portion 3.

In addition, in order to solve the above-mentioned problems, the spout adapter A according to the present invention has an upstream end The part Au has a detachable part 5 which also serves as a water inlet part to be attached to and detached from the faucet column water outlet 3e, and the water outlet part 3 is provided at the downstream end part Ad, and the water passageway reaches the tip of the water outlet part 3. A part of the inner diameter Li of R is formed by a tapered surface 4t that gradually becomes larger in diameter as it goes toward the downstream side Fsd of the axial direction Fs, and the tip 4ts of this tapered surface 4t is formed as the tip of the water spout portion 3. Features.

In addition, the tapered surface 4t of the faucet pillar 1 and spout adapter A according to the present invention has an outer opening diameter Lo of the tip 4ts of the tapered surface 4t of 12.5 mm or more, and a gradient angle Qo of the tapered surface 4t. It is characterized in that the angle is set to 25° or more and 45° or less.

According to the faucet column 1 and the spout adapter A according to the present invention having such a configuration, the following remarkable effects can be achieved.

(1) The residual water Wr inside at the time of water stop Pc, including Pr at the time of draining, is drained from the drain part 6 and can also be smoothly discharged from the spout part 3, so it is especially suitable for installation in cold regions. It is possible to avoid internal freezing on the upstream side of the spout portion 3 of a non-freezing water faucet pillar, etc., and icicle-shaped freezing on the downstream side. As a result, it is possible to eliminate the problem of users not being able to use the faucet immediately when they want to use it, and it is also possible to quickly and smoothly discharge residual water even with a normal faucet pillar 1, improving the sense of quality and marketability. I can do it. In addition, it can be implemented relatively easily by changing the shape (processing change) of the spout portion 3, etc., and is excellent in ease of implementation and low cost.

(2) When forming the tapered surface 4t, the outer opening diameter Lo of the tip 4ts of the tapered surface 4t was set to 12.5 mm or more, and the slope angle Qo of the tapered surface 4t was set to 25° or more and 45° or less. It can cover many of the water faucet pillars 1 based on the water supply standards etc. This allows implementation as an optimal form from the viewpoint of ensuring sufficient performance.

A cross-sectional side view including a partially extracted enlarged view of the water faucet pillar according to a preferred embodiment of the present invention when water is drained; Cross-sectional side view of the faucet pillar when water is being supplied, A cross-sectional configuration diagram of a spout adapter according to a preferred embodiment of the present invention, External view of the spout adapter seen from the downstream side, External front view of the spout adapter, Judgment criteria table during evaluation test of the spout adapter, The result table of the primary judgment of the evaluation test of the spout adapter, Results table of the secondary judgment of the evaluation test of the spout adapter, A cross-sectional side view showing an example of changing the faucet pillar,

Next, preferred embodiments of the present invention will be described in detail based on the drawings.

First, the configuration of the faucet column 1 including the spout adapter A according to the present embodiment will be described with reference to FIGS. 1 to 8.

First, in order to facilitate understanding of the present invention, an overview of the faucet column 1 will be explained with reference to FIGS. 1 and 2. The illustrated water faucet pillar 1 includes an automatic antifreeze faucet pillar 1a that can discharge the residual water Wr inside from the drain part 6 if the detected water temperature or air temperature falls below the set temperature during water draining Pr. show.

As shown in FIG. 1, the automatic antifreeze faucet pillar 1a is equipped with a water riser pipe 2 that stands up in the vertical direction, and is equipped with a water drainage mechanism section 11 at the lower part of this water riser pipe 2. A water supply pipe connection part 12 connected to the water supply pipe 100 is provided at the lower end of the part 11, and a first on-off valve 13 is further provided between the water draining mechanism part 11 and the water supply pipe connection part 12. In addition, in the automatic antifreeze faucet pillar 1a, the lower part of the water supply standpipe 2 including the water drainage mechanism part 11 is usually buried underground. In FIG. 1, G indicates the position of the ground.

Further, the upper end of the water riser pipe 2 is provided with a handle 14, and the middle portion 2m of the water riser pipe 2 is provided with a water outlet pipe portion 15 having a water outlet portion 3 on the tip side. A water passageway Rm is provided inside the water riser pipe 2, and a rotatable operating rod 16 is disposed on the center line. A valve portion 13v is fixed to the lower end of the operating rod 16, and together with a valve seat 13s provided at a fixed portion of the water riser pipe 2, constitutes the first on-off valve 13 described above. The water draining mechanism section 11 constitutes a spool valve 17 using a part of the operating rod 16 as a spool section 16s, and an inner opening 6i of the drain section 6 is visible at an intermediate position of the spool section 16s. The water passageway Rm is visible at the lower end position. Further, the outer opening 6e of the drain section 6 is opened to the outside, and a check valve 18 is interposed at an intermediate position of the drain section 6.

On the other hand, the upper end of the operating rod 16 is fixed to the handle 14. In this case, the outer circumferential surface near the upper end of the operating rod 16 is engaged with the inner circumferential surface of the fixed portion of the water riser pipe 2 via the threaded portion 19 to control the rotational displacement of the handle 14. This is converted into a vertical displacement of the rod 16. A valve portion 20v is fixed at an intermediate position of the operating rod 16, and together with a valve seat 20s provided at a fixed portion of the water riser pipe 2, constitutes a second on-off valve 20. A rear end of a water outlet pipe portion 15 formed in a cylindrical shape and projecting laterally (forward) is fixed to the side surface of the water riser pipe 2 located laterally. A downwardly directed water outlet 3 is disposed near the front end of the bottom surface of the water outlet pipe 15. The illustrated spout section 3 includes a slightly inclined faucet column spout 3e so as to discharge water slightly diagonally forward, and a spout adapter A is attached to this faucet column spout 3e to complete the whole spout section. 3.

In this way, the spout adapter A can be attached to the faucet pillar spout 3e provided in the faucet pillar 1 having the water riser pipe 2 installed outdoors, and in particular, It can be used as a highly versatile spout adapter A by being attached to various types of faucet pillars 1, such as an automatic antifreeze faucet pillar 1a that repeats the time Pr.

Further, an intake valve unit 7 is disposed inside the water outlet pipe section 15 whose front end surface is closed. This intake valve unit 7 includes an intake check valve 21 and a thermoelement 22. The water passage side of the intake check valve 21 is communicated with the water passage Rm of the water riser pipe 2, and the air passage side of the intake check valve 21 is communicated with the secondary side of the thermoelement 22, and the thermostat The primary side of the element 22 is communicated with the atmosphere through the ventilation path 7i.

Next, the function of the automatic antifreeze faucet column 1a will be explained with reference to FIGS. 1 and 2. FIG. 1 shows the state of Pr when water is drained or Pc when water is stopped, and FIG. 2 shows the state of Ps when water is supplied.

First, during water supply Ps, the state is as shown in FIG. 2. During water supply Ps, the handle 14 is rotated counterclockwise. As a result, the operating rod 16 engages with the threaded portion 19 and rotates, so that it is upwardly displaced along with the rotation, and as shown in FIG. 2, the valve portion 13v of the first on-off valve 13 is upwardly displaced. It becomes open. The spool portion 16s closes the inner opening 6i of the drain portion 6 and the water passage Rm. Further, the valve portion 20v of the second on-off valve 20 is also displaced upward and becomes open. As a result, water is supplied along the path indicated by the arrow fw shown in FIG. In this case, the intake check valve 21 of the intake valve unit 7 is closed by water pressure, and the thermoelement 22 is closed by the air temperature or water temperature, so that intake air is cut off.

On the other hand, at the time of water stoppage Pc, the state is as shown in FIG. When the water is stopped Pc, the handle 14 is rotated clockwise. As a result, the operating rod 16 engages with the threaded portion 19 and rotates, so that it is displaced downward along with the rotation, and as shown in FIG. 1, the valve portion 13v of the first on-off valve 13 is lowered and It comes into contact with the seat 13s. As a result, the first on-off valve 13 is brought into a closed state. Further, the spool portion 16s is displaced downward, and the inner opening 6i of the drain portion 6 and the water passage Rm are brought into communication with each other, and the valve portion 20v of the second on-off valve 20 is displaced downward and placed in the closed state. In this case, the thermoelement 22 of the intake valve unit 7 is closed due to the air temperature or water temperature, and the intake air is cut off. Therefore, water is not drained from the drain section 6 due to the negative pressure inside the water supply pipe 2. It won't happen. That is, no water flow is generated inside the automatic antifreeze faucet column 1a, and the state is Pc when the water is stopped.

Furthermore, in this state (water cutoff Pc), the temperature drops, resulting in a water draining state Pr. The state of Pr at the time of draining is basically the state shown in FIG. Now, assume that the air temperature (water temperature) has dropped to below the set temperature. As a result, the temperature-responsive thermo-element 22 becomes open, and the intake valve unit 7 communicates with the atmosphere through the air passage 7i, allowing it to take in air. As a result, air is taken in along the path indicated by the dotted arrow fa shown in FIG. 1, and the negative pressure in the passageway Rm is released, resulting in a water draining state Pr in which water is drained along the path indicated by the dotted arrow fr. Note that the check valve 18 of the drain section 6 is displaced to the open side (increased position in FIG. 1) when water is drained Pr.

By the way, in the case of the automatic antifreeze faucet pillar 1a having such a structure, the water outlet pipe section 15 is provided, and the space between the water outlet pipe section 15 and the intake valve unit 7 functions as the water passage Rm. Moreover, since the second on-off valve 20 is in a closed state during water stoppage Pc or water draining time Pr, the water outlet section 3 is in a sealed state. As a result, the residual water Wr is not discharged from the water spout 3 due to the negative pressure generated inside the water outlet pipe 15 . As a result, when water is drained Pr, drainage from the spout 3 is not sufficient, and freezing occurs inside the water spout, or ice cubes form at the outlet of the water spout, which may cause problems for the user. There was a problem that the user could not use the device promptly when he or she wanted to use it. The present invention aims to solve this problem.

Next, the configuration of the main parts of the automatic antifreeze faucet column 1a and the configuration of the spout adapter A according to the present embodiment will be explained with reference to FIGS. 1 to 8.

The automatic antifreeze faucet pillar 1a basically includes a drainage structure Mi capable of discharging at least the residual water Wr inside from the spout 3 during water stoppage Pc including water draining Pr. Specifically, the above-mentioned water outlet pipe section 15 and water spout section 3 in which residual water Wr exists at the time of water stop Pc including Pr at the time of draining become the drainage structure Mi.

Further, the water spout portion 3 of the automatic antifreeze faucet column 1a is provided on the bottom surface of the water outlet pipe portion 15, as shown in FIG. As mentioned above, the illustrated spout part 3 includes a slightly inclined cylindrical faucet column spout 3e and a spout attached (attached and detached) to the faucet column spout 3e so as to discharge water slightly diagonally forward. It is composed of a water outlet adapter A. This spout adapter A can be used as an independent hose adapter, etc., but in the case of this embodiment, it is integrated into the automatic antifreeze faucet pillar 1a by being attached to the faucet pillar spout 3e. It functions as a spout section 3.

As shown in FIGS. 1 to 5, the spout adapter A constituting the spout portion 3 includes a water pipe portion 3m formed in a cylindrical shape, and a faucet column is attached to the upstream end Au of the water pipe portion 3m. It has an inner circumferential surface that is screwed (attached and detached) to the outer circumferential surface of the water spout 3e, and is provided with a detachable part 5 that also serves as a water inlet part. will be established. A part of the inner diameter Li of the water passage R reaching the tip of the water spout portion 3 is formed by a tapered surface 4t that gradually becomes larger in diameter as it goes toward the downstream side Fsd in the axial direction Fs, and the tip of this tapered surface 4t. 4ts is formed at the tip of the spout portion 3.

When forming the tapered surface 4t, as shown in FIGS. 3 and 4, the outer opening diameter Lo of the tip 4ts of the tapered surface 4t is set to 12.5 mm or more, and the slope angle Qo of the tapered surface 4t is set to 25 degrees. It is desirable to set the angle between 45° and 45°. If selected in this way, most of the faucet pillars 1 based on the current waterworks standards etc. can be covered, so it can be implemented as an optimal form from the viewpoint of ensuring sufficient performance. The downstream end 4ts of this tapered surface 4t coincides with the tip of the water spout portion 3.

Verification was conducted to confirm the effectiveness of this tapered surface 4t. The verification results are shown in Figures 6-8.

For the verification test, as shown in Figure 7, a total of 10 samples A to J with different dimensional conditions, that is, outer opening diameter Lo [mm], slope angle Qo [°], and inner diameter Li [mm], were prepared. , conducted the first and second tests.

In the primary test, automatic antifreeze faucet columns 1a related to samples A to J were installed in a freezing room, water was supplied and drained three times or more for each sample, and water was drained from the spout 3 during draining. The condition was observed and judged by three people. FIG. 6 shows the determination criteria. As a result, the results shown in FIG. 7 were obtained in the primary test. Specifically, six samples A, C, D, F, I, and J were rated “◎ (best),” and four samples B, E, G, and H were rated “× (poor).” .

In the second test, samples A, C, D, F, I, and J, which were rated "◎ (best)" in the first test, were installed outdoors under conditions close to the actual installation environment and a similar test was conducted. went. That is, for each sample, water supply and water draining were repeated three or more times, and three people observed and judged the state of drainage from the spout 3 at the time of water draining. The judgment criteria are the same as in FIG. 6 used in the primary test. As a result, the results shown in FIG. 8 were obtained in the secondary test. Specifically, samples A, C, D, and F were rated "Δ (fair)," sample I was rated "○ (good)," and sample J was rated "◎ (best)."

According to the verification results shown in FIG. 8, it was confirmed that the state of drainage water was greatly affected by the dimensional conditions. In particular, among the verification samples this time, sample J obtained a judgment result of "◎ (best)". That is, the best results were obtained with dimensions in which the outer opening diameter Lo was 14.031 [mm], the slope angle Qo was 40 [°], and the inner diameter Li was 9.5 [mm].

Furthermore, according to the verification results shown in FIG. 8, the outer opening diameter Lo of the tip 4ts of the tapered surface 4t should be set to 12.5 mm or more, and the slope angle Qo of the tapered surface 4t should be set to 25° or more and 45° or less. For example, it was confirmed that, apart from the quality of drainage, it was possible to achieve the objective from the perspective of securing drainage and preventing freezing. Therefore, in particular, if the outer opening diameter Lo of the tip 4ts of the tapered surface 4t is set to 12.5 mm or more, and the slope angle Qo of the tapered surface 4t is set to 25° or more and 45° or less, it is possible to meet the current water supply standards. Since it can cover many of the water faucet pillars 1 based on etc., it can be implemented as an optimal form from the viewpoint of ensuring sufficient performance.

As described above, the automatic antifreeze faucet pillar 1a (faucet pillar 1) according to the present embodiment has a basic configuration in which at least the residual water Wr inside is pumped into the spout during water stoppage Pc including water draining Pr. 3, and a part of the inner diameter Li of the water passage R reaching the tip of the water spout 3 is formed into a tapered surface 4t that gradually becomes larger in diameter as it goes toward the downstream side Fsd of the axial direction Fs. Since the tip 4ts of the tapered surface 4t is formed as the tip of the water spout section 3, residual water Wr inside at the time of water stop Pc, including Pr at the time of draining, is drained from the drain section 6. At the same time, it can also be smoothly discharged from the spout 3, so it is particularly effective against internal freezing on the upstream side of the spout 3 and ice column-shaped freezing on the downstream side of anti-freeze faucet pillars installed in cold regions. can be avoided. As a result, it is possible to eliminate the problem of users not being able to use the faucet immediately when they want to use it, and it is also possible to quickly and smoothly discharge residual water even with a normal faucet pillar 1, improving the sense of quality and marketability. I can do it. In addition, it can be implemented relatively easily by changing the shape (processing change) of the spout portion 3, etc., and is excellent in ease of implementation and low cost.

In particular, in the embodiment, the faucet column 1 is an intake valve unit that automatically switches to the open side to allow air to be taken into the interior if the detected water temperature or air temperature falls below a set temperature during water draining Pr. 7, and is applied to the automatic antifreeze faucet column 1a that can discharge at least the residual water Wr inside the water supply riser pipe 2 from the drain part 6, so that the residual water Wr inside at the time of draining Pr can be quickly and smoothly discharged. This makes it possible to effectively eliminate freezing on the upstream and downstream sides of the spout 3, which tends to occur in the automatic antifreeze faucet pillar 1a.

Although the preferred embodiments have been described in detail above, the present invention is not limited to such embodiments, and does not deviate from the gist of the present invention in detailed configurations, shapes, materials, quantities, numerical values, etc. It can be arbitrarily changed, added, or deleted within the range.

For example, in the embodiment, the automatic antifreeze faucet column 1a has been described in detail as an example, but various other modifications can be implemented in the same manner. Another modification example is shown in FIG. 9 is the same as the automatic antifreeze faucet pillar 1a shown in FIGS. 1 and 2 in that it is an automatic antifreeze faucet pillar 1a. The difference from FIG. 1 (FIG. 2) is that the position of the water outlet pipe section 15 has been changed.

That is, in the embodiment shown in FIG. 1 (FIG. 2), the intake valve unit 7 is disposed inside the water outlet pipe section 15, and the water outlet adapter A is attached to the faucet column water outlet 3e provided in the water outlet pipe section 15. By installing the spout adapter A, the discharge port 3 of the water spout adapter A is used as the water spout portion of the automatic antifreeze faucet column 1a. However, in the modified example shown in FIG. 15, in other words, it is arranged on the rear surface of the water riser pipe 2 with respect to the water outlet pipe section 15, and the angle is changed by 90 degrees and it is arranged in the vertical direction. Furthermore, in the modified example of FIG. 9, since the entire interior of the water outlet pipe section 15 can be used as the water passageway R, the inner diameter is made smaller than that of the water outlet pipe section 15 of FIG. , it was formed as the spout portion 3 of the automatic antifreeze faucet column 1a. Therefore, the shape of the spout section 3 provided at the tip of the water outlet pipe section 15 in the modified example is the same as the shape of the spout section 3 provided at the tip of the spout adapter A.

The other configurations in FIG. 9 are the same as those in FIG. 1. Therefore, the same parts in FIG. 9 as in FIG. 1 (FIG. 2) are given the same reference numerals to clarify the structure, and detailed explanation thereof will be omitted. The automatic antifreeze faucet pillar 1a shown in FIG. 9 also has the same basic functions and operations as the automatic antifreeze faucet pillar 1a shown in FIGS. 1 and 2.

Although FIG. 9 is shown as a modification example of the automatic antifreeze faucet column 1a, the present invention has the shape of the water spout 3 as the main part, so that the antifreeze water faucet can be drained by manual operation. The same applies to plug posts. Therefore, it is also possible to apply the faucet pillar 1 to an antifreeze faucet pillar that can discharge at least the residual water Wr inside the water supply riser pipe 2 from the drain part 6 during water draining Pr. Since the residual water Wr inside at the time Pr can be quickly and smoothly discharged, it is possible to effectively eliminate freezing that occurs inside and outside the spout portion 3 of the antifreeze faucet pillar. Furthermore, the present invention can be similarly applied to a normal water faucet column 1 that does not have antifreeze function.

In addition, in the embodiment, the case where the inclined surface in the axial direction of the tapered surface 4t is formed flat is shown, but there is a case where the inclined surface in the axial direction of the tapered surface 4t is formed partially or completely, or where a coating treatment is applied to the surface. This does not exclude cases where surface treatment or other surface treatments have been applied. On the other hand, the spout adapter A can be applied as a faucet pillar spout to be attached to a faucet pillar spout 3e provided in a faucet pillar 1 having a water riser pipe 2 installed outdoors. It can be attached to and removed from various spouts and drains.

INDUSTRIAL APPLICATION The faucet pillar and spout adapter which concern on this invention can be utilized for various faucet pillars which are equipped with the spout part arrange|positioned to the water supply standpipe installed outdoors.

1: Faucet column, 1a: Automatic antifreeze faucet column, 2: Water riser pipe, 3: Water spout, 3e: Faucet column spout, 4t: Tapered surface, 4ts: Tip of tapered surface, 5: Detachable part, 6: Drain part, 7: Intake valve unit, Pr: When water is drained, Pc: When water is stopped, A: Spout adapter, Au: Upstream end, Ad: Downstream end, Lo: Outer opening diameter, Li : Inner diameter of water passage, Qo: Gradient angle, Wr: Residual water, Mi: Drainage structure, R: Water passage, Fs: Axial direction, Fsd: Downstream side in axial direction,

Claims (2)

A faucet pillar equipped with a spout section installed in a water supply standpipe installed outdoors, including a drainage structure capable of discharging at least residual water inside from the spout section to the outside when water is stopped, including when water is drained. , a part of the inner diameter of the water passage leading to the tip of the water spout is formed by a tapered surface that gradually increases in diameter as it goes downstream in the axial direction, and the outer opening diameter of the tip of this tapered surface is 12.5 mm. As described above, the faucet column is characterized in that the tip of the tapered surface is formed as the tip of the spout by setting the slope angle of the tapered surface to 25 degrees or more and 45 degrees or less. A spout adapter that is attached to and detached from a faucet column spout installed on a water supply standpipe installed outdoors, which has a detachable part at the upstream end that also serves as a water inlet that is attached to and detached from the faucet column spout. At the same time, a water spout is provided at the downstream end, and a part of the inner diameter of the water passage leading to the tip of the water spout is formed by a tapered surface that gradually increases in diameter as it goes downstream in the axial direction, and By setting the outer opening diameter of the tip of the tapered surface to 12.5 mm or more and setting the slope angle of the tapered surface to 25° or more and 45° or less, the tip of the tapered surface is formed as the tip of the water spout portion. A spout adapter characterized by:

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