JP4496640B2 - Connection structure of water discharge pipe - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a faucet for keeping out hot water.
[0002]
[Prior art]
The structure of a faucet that is rotatably connected to a conventional faucet body and has an opening / closing function part at the tip of a water discharge pipe will be described in JP-A-10-73169. FIG. 12 is a cross-sectional view of the faucet, and FIG. 13 is a cross-sectional view of the GG portion in the middle of the water discharge pipe. This faucet is attached to a counter, and has a configuration in which a valve portion 72 for adjusting and opening / closing temperature and an operation handle portion 76 for operating the same are provided at the distal end portion of the water discharge pipe portion 78. Give an explanation. Water and hot water are introduced into the main body 77 through the water supply pipe section 6 and the hot water supply pipe section 7 connected to the lower surface of the main body 77 in a watertight manner, and the water flow path 14 and the hot water flow path 15 respectively disposed in the main body 77. To the water discharge pipe 78. The water discharge pipe 78 is inserted into an opening provided on the upper side of the main body 77, and a retaining ring 75 made of stainless steel is engaged with annular grooves provided in the water discharge pipe 78 and the main body 77, respectively. And the sealing material 80 prevents leakage of water to the outside of the faucet and mixing of hot and cold water. The water channel 14 communicates with a water inlet 70 provided on an end side wall of the water discharge pipe part 78, and communicates with the temperature adjustment / open / close valve part 72 via the water supply pipe 71 in the water discharge pipe. On the other hand, the hot water flow passage 15 communicates with the hot water inlet 73 provided on the lower surface 79 of the base end portion of the water discharge pipe 78 via the bottom surface of the opening of the main body 77 and adjusts the temperature via the hot water supply path 74 in the water discharge pipe. It leads to the opening / closing valve part 72. The valve portion 72 of the faucet has both a temperature control function and an opening / closing function of hot water, and is a so-called single lever type faucet that can be temperature-controlled and opened / closed with a single lever.
[0003]
[Problems to be solved by the invention]
In the water faucet having this configuration, when the valve portion 72 is stopped, the hot water side pressure acts in a direction perpendicular to the annular area of the lower surface 79 of the water discharge pipe proximal end. The force that tries to lift the entire portion 78 in the direction opposite to the direction in which it is inserted into the main body 77, that is, the force acts in the direction in which the water discharge pipe 78 comes out of the main body 77.
Speaking of the pressure on the water side, the pressure on the water side in the vicinity of the water inlet 70 is exerted in a direction opposite to the direction in which it is inserted into the main body 77 with respect to the water discharge pipe 78 and the direction in which it is removed from the main body 77. Therefore, the pressure on the water side is relatively canceled and does not contribute to the direction in which the water discharge pipe 78 is removed from the main body 77.
[0004]
In addition, when a direct pressure hot water supply device is installed that branches off from the water supply source pressure, the hot water pressure is the same as the water pressure, that is, the primary pressure when the water is stopped. A large force is applied to the water pipe in the direction of coming out of the main body.
In the example of FIG. 12, this force is a force of a value obtained by multiplying the area of the bottom surface 79 of the water discharge pipe base by water pressure. For example, when the diameter of the water discharge pipe base end is 20 mm, the area is
(20/2) ² × π = 314 mm ²
When a water pressure of 0.75 MPa specified by JIS acts on this, the force acting in the direction in which the water discharge pipe comes out of the main body is
314 mm ² × 0.75 MPa = 235.5 N
become. Further, when a water hammer with a high pressure such as 1 MPa or 2 MPa is received, the water discharge pipe receives an even greater force in the direction of coming off from the main body.
[0005]
Further, the present invention is not limited to the conventional example having the opening / closing function part at the tip of the water discharge pipe, and as shown in FIG. 14, in a general water faucet having a rotatable water discharge pipe, a commercially available water purifier, water discharge such as rectification and spray, etc. Even when a type of switching device or a water discharge switching device with a temporary water stop function is installed at the tip of the water discharge pipe, the complicated flow path in these devices becomes a resistance and the original water discharge amount of the faucet Therefore, a high water pressure acts on the inside of the water discharge pipe, and a large force acts on the water discharge pipe portion in the direction of coming out of the main body.
[0006]
In such a situation where a large force acts on the water discharge pipe in the direction of coming out of the main body, a large force acts on the parts that prevent the water discharge pipe and the main body from coming off, and the impact during long-term opening and closing There is a possibility that these parts may be damaged due to fatigue failure or the like due to fluctuations in water pressure or the like, and the water discharge pipe may suddenly come off and leak. Furthermore, when the water discharge pipe is moved to the left and right many times over a long period of time, strength deterioration due to wear or repeated progresses in the retaining parts, accelerating damage of the parts. In the case of the conventional example, a stainless retaining ring 75 is engaged with a groove provided in the main body 77 to prevent the water discharge pipe 78 from coming off, and copper-based wear generally used as a material for the main body 77 is used. In the case of a material that is easily deformed, the groove provided in the main body is scraped and worn by the engaging retaining ring 75 of the stainless steel, and the retaining ring holding portion around the groove becomes thin, and the force applied to the water discharge pipe 78 is reduced. There is a possibility that the holding portion may be suddenly damaged one day.
[0007]
In view of the above problems, in the present invention, in the spout pipe connection structure comprising at least a faucet body and a spout pipe part rotatably connected to the faucet body, the spout pipe part is used as the main body part. An object of the present invention is to provide a connection structure for a water discharge pipe that prevents the water discharge pipe from coming out of the faucet body suddenly even if the functional portion that is rotatably connected and held is damaged.
Furthermore, the connection structure which a user understands that the function part which connects and hold | maintains a water discharge pipe part to a main-body part rotatably is damaged is provided.
[0008]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a water discharge pipe connection structure comprising at least a water faucet body and a water discharge pipe portion rotatably connected to the water faucet body. A cap, a first retaining ring, a guide, and a second retaining ring are provided at a connection portion with the stopper body, and the first retaining ring and the second retaining ring are spaced apart from each other on the outer peripheral wall of the water discharge pipe. And the first retaining ring is sandwiched between the cap and the guide, prevents the water discharge pipe from being pulled out, and holds it rotatably. A retaining ring is positioned at the lower end of the guide with a gap, and when the first retaining ring stops functioning, it comes into contact with the lower end of the guide to prevent the water discharge pipe from coming off. Thereby, even when the first retaining ring is broken, the second retaining ring functions to prevent the water discharge pipe from coming off from the main body, and the faucet is continuously used as it is. You can also.
[0009]
Furthermore, the second invention is characterized in that when the first retaining ring is broken, the water discharge pipe rises by water pressure until the second retaining ring comes into contact with the lower end of the guide.
As the water discharge pipe rises, the user can recognize an abnormality of the water discharge pipe connecting portion and can take appropriate measures such as contacting a maintenance company.
[0010]
Furthermore, in the third aspect of the invention, when the second retaining ring comes into contact with the lower end of the guide, the base end portion of the water discharge pipe comes off the ring that has guided the base end portion, and the water discharge pipe is It is characterized by tilting.
Since the inclination of the water discharge pipe appears as rattling, the user can recognize the abnormality of the water discharge pipe connecting portion and can take appropriate measures such as contacting a maintenance company.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
(Example)
The present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of an essential part of an embodiment of the present invention, FIG. 2 is an external view of the embodiment, FIG. 3 is an exploded perspective view of the embodiment, and FIG. FIG. 5 is an exploded perspective view of the temperature control function unit used in the embodiment. FIG. 5 is a side view of the main body on the side where the temperature control function unit is inserted. FIGS. 6 and 7, FIGS. 8 and 9, and FIGS. 10 and 11 are cross-sectional views of the main part showing the form of another embodiment and the state in which the embodiment works. First, the structure of each part of the faucet according to the present invention will be described with reference to FIGS. In FIG. 2, water and hot water flow into the faucet body 1 through a water supply pipe 6 and a hot water supply pipe 7, respectively, and a desired water discharge by rotating the temperature control handle 2 provided on the side surface of the main body 1. After being mixed with the temperature, the water reaches the opening / closing valve part provided at the tip of the water discharging pipe part 3 through the water discharging pipe 3, and water is discharged and stopped by rotating the opening / closing handle part 4 linked to the opening / closing valve. Is done.
[0012]
The main body 1 is fitted to the lower portion of the fixing portion 5 attached to the counter surface and fixed with a set screw 8. At this time, the water supply pipe part 6 and the hot water supply pipe part 7 are inserted into the fixed part 5. The water and hot water that have passed through the water supply pipe 6 and the hot water supply pipe 7 respectively reach the opening 9 provided on the side surface of the main body via the water flow path 14 and the hot water flow path 15 in the main body 1. The bottom portion 10 of the opening 9 is provided with a water opening hole 11, a hot water opening hole 12, and a mixed water opening hole 13 communicating with the water discharge pipe portion.
[0013]
A temperature adjustment function part 67 is inserted and fixed in the opening 9 in a watertight manner via the packing 26. As shown in FIG. 5, the temperature adjustment function unit 67 includes a resin-made casing 23 in which, for example, a fixed disk 24 made of PPS resin and a movable valve 25 made of polyacetal resin are housed. A hole 27, a hot water through hole 28, and a mixed water through hole 29 are provided through the packing 26 to oppose the water opening hole 11, the hot water opening hole 12, and the mixed water opening hole 13 on the surface of the bottom 10 of the main body. Yes. One end of the movable valve 25 protrudes from the casing 23, and the temperature control handle 2 is attached to the shaft 30, and a cavity 31 is provided on the surface facing the fixed disk 24, and the temperature control handle 2 is rotated. By rotating the movable valve 25, the overlapping state of the hollow portion 31, the hot water passage hole 28, and the water passage hole 27 changes, and the mixing ratio of hot water and water changes.
[0014]
The temperature control handle portion 2 includes a cylindrical portion 17 fixed to the shaft 30 and an arc-shaped ring portion 18 continuously provided on the outer peripheral surface of the cylindrical portion 17, and the ring portion 18 faces the front side. In the state where the ring portion 18 is substantially parallel to the counter surface, the mixed water is discharged at an appropriate temperature, and only the water is about 45 at a position inclined about 45 degrees downward from this position. Only hot water is discharged at a position inclined upward. Here, the convex portion 34 provided at the base portion of the shaft 30 engages with a fan-shaped counterbored portion 35 provided in the casing 23, and the convex portion 34 rotates and moves only within the range of the counterbored portion 35. This is possible, that is, it constitutes a rotation restricting means for the temperature adjusting handle portion 2.
[0015]
Hot water that has passed through the mixed water through hole 29 of the temperature control function section 67 is introduced into the water discharge pipe section 3 via the mixed water opening hole 13 and the mixed water flow path 16 formed in the main body section 1. Here, the main body portion 1 is provided with a connection opening 40 and a screw portion 49 of the water discharge pipe portion 3 on the upper surface thereof. A cylindrical member 42 having a hollow portion is inserted into the inner peripheral wall of the end portion of the water discharge pipe 3 with sealing materials 43 and 51 for preventing water leakage, and is prevented from coming off by a retaining ring 44. Two seal members 43 and 51 are mounted in parallel with a gap between them, and the gap between the seal members is sealed with grease to prevent leakage and smooth rotation of the water discharge pipe over a long period of time. It keeps in. Further, a cap 45, a first retaining ring 46, and a guide 47 are inserted into the end of the water discharge pipe 3, and a second retaining ring 48 is located at the lower end of the guide 47 with a gap therebetween. It is attached to the channel protrusion 50 and connected to the main body 1 by screwing the cap 45 and the main body screw 49. Further, the base 52 of the water discharge pipe 3 is fitted with a ring 52 disposed at the bottom of the main body opening 40 to prevent the water discharge pipe from rattling. Here, the first retaining ring 46 and the second retaining ring 48 are each anchored in an annular groove provided on the outer peripheral wall of the end portion of the water discharge pipe 3 at a predetermined interval. Further, the first retaining ring 46 is made of resin and has a notch, and the notch is expanded by utilizing the spring property of the resin, and an annular groove provided on the outer peripheral surface of the water discharge pipe 3. Assemble to. Further, since it is made of resin, it can be attached to the connecting portion with a small clearance, and the water discharge tube can be smoothly slid freely and rattling can be suppressed.
[0016]
Further, in a situation where water pressure is applied in the initial stage of use of the faucet, the first retaining ring 46 attached to the water discharge pipe 3 is arranged and configured to be pressed into the lower inner periphery of the cap 45. It functions as a first retaining member for rotatably holding the water pipe 3. In addition, since a slight gap A is provided between the second retaining ring 48 and the guide 47, the second retaining ring 48 does not contribute to retaining in this state. Here, the retaining by the first retaining ring 46 and the second retaining ring 48 is configured to function independently.
[0017]
The water discharge pipe 3 is formed by bending a metal pipe such as a copper pipe into a shape having an inflection point in the middle part, and an opening / closing valve part 60 is fixed to the front end side thereof by screwing. A water discharge port 62 serving as an outlet of the mixed water is provided. The opening / closing valve portion 60 has a valve seat portion formed of rubber or ceramic, and the valve seat portion is operated by a rotation operation of the opening / closing handle portion 4 coupled to the spindle 61 interlocked with the valve seat portion. Open and close the flow path to stop the mixed water.
[0018]
According to the configuration of the present invention, when the open / close valve portion at the tip of the water discharge pipe is stopped, when the water faucet is used for a long time under the condition that a high water pressure acts in the water discharge pipe, Force due to water pressure works in the direction to escape from the main body by the circular area. Here, the reason why the force for pulling out the water discharge pipe does not act on the entire inner diameter of the water discharge pipe is that the water pressure acts on the annular area of the upper surface of the cylindrical member 42 in the direction in which the water discharge pipe does not come out, so that the amount corresponding to the area. This is because the force in the direction in which the water discharge pipe comes out is canceled. Now, damage to the water discharge pipe connecting portion due to the force acting in the direction in which the water discharge pipe is pulled out first occurs with respect to the first retaining ring 46 constituting the first retaining ring. That is, in the first retaining ring 46, the engaging portion 46 a is engaged with a groove provided annularly on the outer peripheral wall of the water discharge pipe 3, and the shoulder portion 46 b is held at the lower inner peripheral portion of the cap 45. For this reason, a shearing force is applied to the first retaining ring 46, and the retaining part 46 using the soft resin material is divided into the engaging part 46a and the shoulder part 46b by the shearing force. Receive power in the direction you want to go. Further, when the faucet is used over a long period of time while the shearing force is applied, the engaging portion 46a gradually loses its shape, and the first retaining ring 46 is damaged, and the first spout pipe is damaged. Loses its function as a retainer.
[0019]
When the first retaining ring 46 breaks and loses its function, the water discharge pipe rises by a distance A and the second retaining ring 48 comes into contact with the lower end surface of the guide 47 to newly prevent the water discharge pipe from coming off. Function as.
[0020]
If operated as described above, the first and second double stoppers are provided on the water discharge pipe, so that even if the first retaining ring breaks, the second retaining ring is immediately Can function to prevent the water discharge pipe from suddenly coming off and being damaged, resulting in a water leakage accident. Furthermore, in the state where the second retaining ring is functioning, the position of the water discharge pipe rises, so that the user can feel an abnormality, and if something that appears as a mark appears further, it is more reliable. In addition, the user can recognize the abnormality of the water discharge pipe portion and perform appropriate maintenance.
[0021]
Further, another embodiment of the present invention will be described with reference to FIGS. In FIG. 6, the configuration of the hot water channel is the same as that in FIG. 1 described above. The difference from FIG. 1 is that the sealing material 51 in contact with the outer peripheral wall of the channel protrusion 50 is provided at one place. The lower end side of the guide 47 is deleted to make it shorter, and the distance B between the lower end surface of the guide 47 and the second retaining ring 48 is increased. Further, on the outer peripheral wall of the water discharge pipe 3 concealed by the cap 45, a letter 41 such as “It is time to replace” is formed by laser marking or the like. If laser marking is used, the concave characters are formed on the surface of the water discharge tube, which is highly resistant to wear due to rotational sliding of the water discharge tube. Alternatively, other than letters, a picture, a mark, or the like that calls attention may be provided by printing or sticking.
[0022]
The operation of this configuration is as follows. When the first retaining ring 46, which is the first retaining portion, is damaged in the same process as in the embodiment of FIG. The second retaining portion functions as the distance 48 rises by a distance B to a position where 48 hits the lower surface of the guide 47. When the state at this time is shown in FIG. 7, the character 41 described above appears on the outer peripheral wall of the water discharge pipe on the upper side of the cap 45. Further, when the water discharge pipe 3 is lifted, the base end portion thereof is detached from the ring 52 that has been held and guided, and the inclination and the rattling are increased.
[0023]
Due to the function of the second retaining part as described above, the user can easily detect an abnormality of the faucet due to the appearance of caution information “It is time to replace” and the inclination or rattling of the water discharge pipe. Thus, it is possible to take appropriate measures such as contacting a maintenance company, and to avoid a situation where the water discharge pipe comes out.
[0024]
Further, another embodiment of the present invention will be described with reference to FIGS. In FIG. 8, the configuration of the flow path of hot water is the same as that of FIG. 1 described above. The difference from FIG. 1 is that a small diameter portion 50a is provided on the upper outer periphery of the flow passage protrusion 50 and the outer periphery of the protrusion 50 is The sealing material 51 in contact with the wall is provided at one place, and the lower end side of the guide 47 is deleted to make it shorter, and the distance between the lower end surface and the second retaining ring 48 is C. Here, the distance between the base of the small-diameter portion 50a and the sealing material 51 is smaller than C, and the sealing material 51 is not able to stop completely due to insufficient sealing allowance at the peripheral diameter of the small-diameter portion 50a. Dimensional relations that cause serious water leakage.
[0025]
The operation in this configuration is the same as in the embodiment of FIG. 1, and when the first retaining ring 46 as the first retaining portion is broken, the water discharge pipe is The retaining ring 48 is raised by a distance C to a position where it comes into contact with the lower surface of the guide 47, and the second retaining portion functions. FIG. 9 shows the state at this time, and the sealing material 51 is also raised by the distance C, and the inner diameter side of the sealing material 51 comes into contact with the small diameter portion 50a. Since the sealing material 51 has a dimensional relationship that causes slight water leakage at the position of the small diameter portion 50a, water leakage occurs from the portion, and the water leaked from the inner diameter portion 45a and the lower end portion 45b of the cap 45 to the outside of the faucet. Flows out.
[0026]
By the above action, when the first retaining ring is broken and the second retaining ring functions, the water discharge pipe rises from the faucet body and water leaks from the upper part of the faucet body. The user is forced to take immediate action under the unusual situation of water leakage, and the water discharge pipe part is quickly maintained, and the water discharge accident that the water discharge pipe comes out of the faucet body is avoided. Can do.
[0027]
Further, another embodiment of the present invention will be described with reference to FIGS. In FIG. 10, the configuration of the hot water flow path is the same as that of FIG. 1 described above, and the difference from FIG. 1 is that an annular groove for mounting a sealing material on the outer peripheral wall of the flow path projection 50 is shown. The sealing material 54 is disposed and a tapered shape 55 is provided on the inner wall of the lower end portion of the water discharge pipe. Furthermore, the lower end side of the guide 47 is deleted to make it shorter, and the distance between the lower end surface and the second retaining ring 48 is D. Here, when the abutting portion of the inner wall of the water discharge pipe is displaced by the distance D upward with respect to the sealing material 54, the sealing allowance of the sealing material 54 is insufficient and a slight water leakage occurs. The dimensions are related to the occurrence of
[0028]
The operation of the water discharge pipe connecting portion in this configuration is as follows. When the first retaining ring 46 is damaged in the same process as in the embodiment of FIG. The stopper 47 functions to rise by a distance D to a position where it hits the lower surface of the guide 47. The state at this time is shown in FIG. 11, and since the tapered portion 55 of the water discharge pipe is in slight contact with the sealing material 54, a slight water leak occurs from the portion due to insufficient sealing allowance. The leaked water flows out of the faucet from the inner diameter portion 45a and the lower end portion 45b of the cap 45.
[0029]
Due to the above action, when the first retaining ring is broken and the second retaining ring functions, the same effect as the embodiment of FIG. 8 described above can be obtained. In other words, since the water discharge pipe rises from the faucet body and water leaks from the upper part of the faucet body, the user is required to take immediate action under the unusual situation of water leakage. Maintenance of the water pipe portion is quickly performed, and a water leakage accident in which the water discharge pipe comes out of the faucet body can be avoided.
[0030]
The present invention is not limited to the above-described embodiments, and is provided with a single water faucet that supplies only water or hot water, or a temperature control unit and an opening / closing unit at the tip of a water discharge pipe as taken up in the conventional example of FIG. The single lever-type faucet and the faucet attachment form are not a type with a base attached to the counter surface, but can also be applied to a faucet such as wall mounting. Alternatively, as the temperature control valve unit, a temperature control valve unit used in a so-called thermostat type mixing plug that automatically controls the mixing ratio of hot water and water may be used.
[0031]
【The invention's effect】
In the present invention, in a water discharge pipe connection structure comprising at least a water faucet body and a water discharge pipe portion rotatably connected to the water faucet main body, a first stopper is attached to the connection portion between the water discharge pipe and the main body portion. A ring and a second retaining ring are provided so that the second retaining ring can function when the first retaining ring is damaged. As a result, the water discharge pipe is suddenly removed from the faucet body even if the water discharge pipe connection part is damaged due to high water pressure acting on the water discharge pipe because it has a water purifier or the like and an opening / closing function part at the tip of the water discharge pipe. It is possible to avoid problems that cause water leakage accidents.
Further, when the first retaining ring that rotatably connects and holds the water discharge pipe portion to the main body portion is damaged, the water discharge pipe rises or tilts, so that the user can know that an abnormality has occurred. Structure can be provided.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an essential part showing an embodiment of the present invention.
FIG. 2 is an external perspective view of the faucet.
FIG. 3 is an exploded perspective view of the same.
FIG. 4 is a side view of the temperature adjustment function part mounting portion of the main body.
FIG. 5 is an exploded perspective view of the temperature control function unit.
FIG. 6 is a cross-sectional view of a main part showing another embodiment of the present invention.
7 is a cross-sectional view of the main part showing the case where the second retaining ring functions in the invention of FIG. 6. FIG.
FIG. 8 is a cross-sectional view of a main part showing another embodiment of the present invention.
9 is a cross-sectional view of the main part showing the case where the second retaining ring functions in the invention of FIG.
FIG. 10 is a cross-sectional view of a main part showing another embodiment of the present invention.
11 is a cross-sectional view of the main part showing the case where the second retaining ring functions in the invention of FIG.
FIG. 12 is a cross-sectional view of a main part showing a conventional embodiment.
13 is a cross-sectional view of the water discharge pipe GG portion of FIG. 12;
FIG. 14 is an external perspective view of a faucet equipped with a water purifier at the tip of a rotatable water discharge pipe.
[Explanation of symbols]
A: The amount of movement of the water discharge pipe until the second retaining ring functions after the first retaining ring in FIG. 1 is broken. B: The second retaining ring after the first retaining ring is broken in FIG. The amount of movement of the water discharge pipe C until the function of the first stop ring in FIG. 8 after the first retaining ring breaks in FIG. 8 and the amount of movement D of the water discharge pipe until the second retaining ring functions. The amount G of movement of the water discharge pipe until the second retaining ring functions after the breakage of the pipe. Reference numeral H representing the cross-sectional position of the conventional water discharge pipe in FIG. 12 ... Water pressure acts in the direction in which the water discharge pipe is removed in FIG. Circular area 1 ... main body, 2 ... temperature control handle, 3 ... water discharge pipe, 4 ... open / close handle,
5 ... Fixing part, 6 ... Water supply pipe, 7 ... Hot water supply pipe, 8 ... Set screw,
9 ... Temperature control side opening of main body, 10 ... Bottom of temperature control side opening of main body,
11 ... Water opening hole, 12 ... Hot water opening hole, 13 ... Mixed water opening hole,
14 ... water flow path, 15 ... hot water flow path, 16 ... mixed water flow path,
17 ... cylinder part, 18 ... ring part, 23 ... casing, 24 ... fixed disk,
25 ... movable valve, 26 ... packing, 27 ... water passage, 28 ... hot water passage,
29 ... Mixed water through hole, 30 ... Shaft, 31 ... Cavity, 34 ... Projection,
35 ... counterbore part, 40 ... opening part, 41 ... character, 42 ... cylindrical member,
43 ... Sealing material, 44 ... Retaining ring, 45 ... Cap,
45a ... upper surface inner diameter part of the cap, 45b ... lower surface outer diameter part of the cap,
46 ... 1st retaining ring, 46a ... Engagement part of retaining ring, 46b ... Shoulder part of retaining ring,
47 ... Guide, 48 ... Second retaining ring, 49 ... Threaded portion, 50 ... Flow path protrusion,
51 ... Sealing material, 52 ... Ring, 54 ... Sealing material, 55 ... Tapered part,
60 ... Open / close valve, 61 ... Spindle, 62 ... Spout,
67 ... Temperature control function unit, 70 ... Water inlet, 71 ... Water supply pipe in the water discharge pipe,
72 ... Temperature control / open / close valve section, 73 ... Hot water inlet, 74 ... Hot water supply passage in the water discharge pipe,
75 ... Retaining ring, 76 ... Operation handle, 77 ... Main body,
78 ... Water discharge pipe, 79 ... Bottom surface of the water discharge pipe base end, 80 ... Sealing material

Claims (3)

In a spout tube connection structure comprising at least a faucet body and a spout pipe portion rotatably connected to the faucet body,
The connecting portion of the water discharge pipe with the faucet body includes a cap, a first retaining ring, a guide, and a second retaining ring,
The first retaining ring and the second retaining ring are respectively moored in a groove provided in an annular shape at regular intervals on the outer peripheral wall of the water discharge pipe,
The first retaining ring is sandwiched between the cap and the guide, prevents the water discharge pipe from being pulled out, and holds it rotatably;
When the second retaining ring is located at the lower end of the guide with a gap and the first retaining ring stops functioning, the second retaining ring abuts on the lower end of the guide and prevents the water discharge pipe from coming off. Connecting structure of the water discharge pipe. The connection of the water discharge pipe according to claim 1, wherein when the first retaining ring is broken, the water discharge pipe rises by water pressure until the second retaining ring comes into contact with the lower end of the guide. Construction. When the second retaining ring comes into contact with the lower end of the guide, a base end portion of the water discharge pipe is detached from a ring that has guided the base end portion, and the water discharge pipe is inclined. Item 3. A structure for connecting a water discharge pipe according to item 1 or 2.

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