JP2995327B1 - Piping connection device - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To be suitably used for connection of piping which penetrates a waterproof layer such as bathtub water circulation, water supply or hot water supply piping when hot spring water or seawater is used for bathtub water, and comes in contact with asphalt or a waterproofing agent. Provided is a connection device that has no risk of deterioration or destruction, and that can easily perform a terminal treatment of a waterproof layer that terminates on the outer periphery of a sheath tube, and that can enhance construction workability and sealability. SOLUTION: A socket 1 for pipe connection formed of a synthetic resin material, and a metal sheath tube 2 fitted on the outer periphery of the socket 1 with an interval S and engaged with the socket at least at one end.
A metal flange-shaped waterproof plate 3 integrally provided on the outer periphery of the sheath tube 2 and having a mounting hole 6 formed therein, and an elastic filler 4 filled between the sheath tube 2 and the socket 1. Then, a flange 7 that protrudes outward is provided at the upper end of the sheath tube 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting device for piping such as a bathtub water circulation pipe, a general water supply or hot water supply pipe, a hot spring water supply pipe, which is disposed mainly through a waterproof layer. is there.

[0002]

2. Description of the Related Art In recent years, bath facilities using hot spring water or seawater for bathtub water have been increasing due to a growing desire to promote health. In particular, the demand is increasing for baths and terrasotherapy (marine treatment) in facilities for the aged.

[0003] Usually, in a bath facility used by many people,
In order to keep the temperature of the hot water in the bathtub (bathtub water) uniform and uniform, and to keep clean water with high transparency, the water is circulated through a hair catcher, a filter, a heat exchanger, and the like.

As described above, when hot spring water or seawater is used for bathtub water, the fittings of the bathtub water circulation pipe (usually a polyvinyl chloride pipe) are made of stainless steel due to the special water quality. Even if there is, there is a risk of deterioration or corrosion.

[0005] For this reason, as a connector for the piping, use of a resin product having a property strong against the water quality, for example, a Teflon (trademark) resin product or a polyvinyl chloride resin product is considered.

However, such a resin product, for example, a connection device made of a polyvinyl chloride resin, may be softened and deformed or broken when a temperature or pressure exceeding an allowable range is applied, and creozote, asphalt, preservative, etc. Contact with chemicals, waterproofing agents and organic solvents such as ketones may cause deterioration, swelling and destruction. Therefore, there is a problem in using the resin product in a state of being fixed on a concrete slab and in contact with a waterproof layer as a connector for a bathtub water circulation pipe.

For example, as shown in FIG. 5, a floor structure of a bathroom has a waterproof mortar layer (21) and a waterproof layer (22) mainly composed of asphalt or the like provided on a concrete slab (20). Furthermore, a waterproof protective mortar layer (23), a heat insulating layer (24), a lightweight concrete layer (25) and a base mortar layer (26) are provided thereon, and a finishing material such as a tile (27) is attached on the surface. It is common.

The connection of the bathtub water circulation pipe is performed by connecting a connection tool (50) connected via a connection sleep (11) to a bathtub water circulation port (10) provided at the bottom of the bathtub or the like. A flange-shaped waterproof plate (53) as a waterproof dish on the outer periphery is installed so as to fit into the piping hole (28) in (20).
The anchor bolt (29) buried and fixed in 0) is fixed. At this time, the waterproof layer (22) provided on the concrete slab (20) comes into contact with the outer periphery of the connector such as the waterproof plate (53).

Particularly, in the case of a waterproof layer mainly composed of asphalt, the melting temperature of the asphalt is as high as 280 ° C., and the asphalt may be installed at a considerably high temperature. In contact with, it causes softening and alteration, causing breakage. Therefore, there is a problem in using the resin product in the same manner as a metal product such as stainless steel.

[0010] The above-mentioned problem can also be applied to a case where general water supply and hot water supply pipes, hot water supply pipes, and the like are arranged so as to penetrate the waterproof layer.

Therefore, the applicant of the present invention has solved the above-mentioned problems in the connection of pipes, and has been able to use the hot spring water or seawater as the bathtub water in a suitable manner for connection of a bathtub water circulation pipe, and to use asphalt. In order to be able to use it without fear of deterioration or destruction even if it comes in contact with water or a waterproofing agent, a socket for connection made of synthetic resin and a metal sheath tube fitted with a waterproof plate fitted outside (Japanese Patent Application No. 10-72590) has been proposed.

[0012] The present invention is to improve the above-mentioned connection device to achieve the same object as described above, and to fix the connection device with a waterproof layer on a concrete slab.
The terminal treatment of the waterproof layer that terminates at the outer periphery of the sheath tube is facilitated, and the workability and sealability are enhanced.Furthermore, the socket is easily assembled by engaging the sheath tube. This prevents the elastic filler filled between the inner tube and the sheath tube from being pulled down.

[0013]

SUMMARY OF THE INVENTION The present invention relates to a pipe connecting apparatus for bathtub water circulation, water supply and hot water supply, and a pipe connecting apparatus for bathtub water circulation, water supply and hot water supply. A socket formed of a synthetic resin material, to which a connection pipe or a circulation pipe can be connected from both end openings, and the socket at one end which is fitted at a predetermined interval on the outer periphery of the socket and is at least upstream. A metal sheath tube engaged with and connected to the sheath tube, a metal flange-shaped waterproof plate integrally provided on the outer periphery of the sheath tube and having a mounting hole formed at a required position, the sheath tube and the socket And a resilient filler filled between the sheath tube and a flange protruding outward at the upper end of the sheath tube.

According to this connecting device, for example, when installing a bathtub water circulation pipe, it is fixed on the concrete slab with an anchor bolt or the like at a waterproof plate portion, and a waterproof layer such as asphalt is provided on the concrete slab. We put on and construct. At this time, the waterproof layer is terminated at the outer peripheral portion of the sheath tube of the connection device. In particular, since one end portion (mainly the upper end portion) on the upstream side of the sheath tube is provided with a flange extending outward, By terminating under the flange,
The terminal treatment can be easily performed, and a good waterproof effect can be exhibited.

Further, in this construction, the waterproof layer does not come into contact with the inner resin socket only because the waterproof layer comes into contact with the outer sheath tube or the waterproof plate. In addition, since the sheath tube and the waterproof plate are made of metal, there is no danger of swelling, deformation or breakage even when the waterproof layer or waterproof agent mainly composed of asphalt comes into contact.

Also, the socket that comes into contact with the inner bath water is
It is made of a synthetic resin material and is more resistant to hot spring water and seawater than metals, and does not cause deterioration or corrosion even when hot spring water or seawater is used as bath water.

Furthermore, since an elastic filler is filled between the inner socket and the outer sheath tube, vibration and noise of the socket due to the flow of bath water can be reduced, and expansion and contraction of the tube due to temperature change. Is also acceptable. In addition, when the elastic filler is made of a material having heat insulating properties, the heat insulating effect can prevent the heat of asphalt from being transmitted to the inner resin socket at the time of construction, and the heat of the bathtub water flowing inside can be prevented from flowing outside. Transmission to the sheath can also be prevented.

The invention according to claim 2 is characterized in that one end of the sheath tube has
An end member for shielding between the sheath tube and the socket is provided,
The end member is connected to the outer periphery of the socket in a sealing manner by screwing means, and a flange is formed on the outer periphery of the end member.

Thus, the socket and the sheath tube can be easily engaged and connected by the screwing means.
The internal socket can be stably supported at a predetermined height position with respect to the waterproof plate and the sheath tube fixed to the concrete slab. In addition, the sealing performance of the engagement connection portion of the socket at the one end of the sheath tube is also well maintained, and it is possible to prevent moisture transmitted along the outer periphery of the connected pipe from invading the elastic filler portion.

According to a third aspect of the present invention, the other end of the sheath tube has
An inner flange-shaped end plate for preventing the elastic filler from coming off and falling is provided so as not to be engaged with the socket. Thereby, the expansion and contraction of the pipe due to the temperature change can be allowed, and the elastic filler can be prevented from being pulled out and dropped by vibration or the like.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a cross-sectional view of one embodiment of a pipe connection device (A) according to the present invention, FIG. 2 is a plan view of the same, and FIG. 3 is a plan view of the same from the lower surface side. I have. FIG. 4 shows a working example in which the connecting device (A) is used for connecting a bathtub water circulation pipe, and FIG. 5 shows an enlarged cross-sectional view of a part thereof.

The connecting device (A) shown in the figure is, for example, as shown in FIG. 4, a member for forming a bathtub water circulation port (10) such as a suction port and a discharge port provided on the bottom and side surfaces of the bathtub (B). The lower or downstream side is connected via a connection sleeve (11).

The connection device (A) includes an inner connection socket (1), an outer sheath tube (2), a flange-shaped waterproof plate (3) attached to the sheath tube (2), and a socket ( 1)
And an elastic filler (4) as a filling material filled between the sheath tube (2).

The socket (1) has openings (a) at both ends.
(B) It is formed of a synthetic resin material so that the connection sleeve (11), the circulation pipe (12) or the connection pipe for connecting these can be connected by fitting or screwing means. As the material, a heat-resistant resin such as a heat-resistant polyvinyl chloride resin is particularly preferably used, but other synthetic resin materials can also be used.

The sheath tube (2) is mainly made of a corrosion-resistant metal such as stainless steel, and has an inner diameter slightly larger than the outer diameter of the socket (1), for example, about 5 to 20 mm. One end portion which is fitted on the outer periphery with a required interval (S) and is located on the upstream side, that is, the upper end portion when used in the vertical direction as shown in the figure (hereinafter simply referred to as the upper end portion) 2) is engaged and connected to the outer periphery of the socket (1).

Specifically, as the engagement connecting means,
At the upper end of the sheath tube (2), a metal end member (5) made of stainless steel or the like for shielding between the socket (1) and the outer periphery of the socket (1) is provided by the end member (5). Are engaged and connected by screwing means. That is, a male screw (1a) is formed on the outer periphery of the upper end of the socket (1), and the male screw (1a) is formed on the inner periphery of the end member (5).
And a female screw (5a) that is screwed together with the second screw (1a) (5a). Particularly, by using a screw packing material (not shown) for the screwed portion, the screwed connection is made so as to maintain a sealed state. In order to further improve the sealing property of this portion, a sealing agent such as silicon can be applied to the upper part of the engagement connection portion between the socket (1) and the end member (5). (6) indicates a portion where the sealant is applied.

Thus, the socket (1) and the sheath tube (2)
Can be easily engaged and connected by means of a screwing means, so that the assembling work is facilitated, and the sealing property of the engaged and connected portion is well maintained, thereby preventing moisture from entering the elastic filler (4). it can. The sheath tube (2) is integrated with the end member (5) by press fitting or welding. In addition, the connection may be made by other means such as screwing means.

At the upper end of the sheath tube (2), for example, a flange (7) is provided on the end member (5) so as to protrude outward by about 5 to 10 mm as shown in the figure. This flange (7) can be formed integrally with the upper end of the sheath tube (2) itself. However, in practice, as shown in the figure, the flange (7) is formed integrally with the upper end of the outer periphery of the end member (5). It is preferable that the upper end portion of the sheath tube (2) is fitted to the outer periphery and connected to the outer periphery, because the connected state is stable.

Further, an inner flange-shaped end plate for preventing the elastic filler (4) from being pulled out and dropped between the socket (1) and the sheath tube (2) is provided at the lower end of the sheath tube (2). (8) is provided with a small gap (for example, about 1 mm) so as to be disengaged from the socket (1). As the attachment means, a mounting portion (2a) is fixed to the outer periphery of the lower end portion of the sheath tube (2) by welding means, and a ring disk-shaped end plate (8) is screwed to the mounting portion (2a). It is detachably fixed by means (8a). (1b) is a socket (1)
A notch provided on the outer periphery of the lower end portion of the socket, and is formed as a grip portion at the time of a screwing operation between the socket (1) and the sheath tube (2).

The flange-shaped waterproof plate (3)
Is made of the same metal material as stainless steel as the sheath tube (2),
It is integrally attached to the outer periphery of the sheath tube (2) by welding means so as to serve as a waterproof dish. The welded corners are rounded. The waterproof plate (3) is provided with mounting holes (3a) at required positions on the periphery such as the four corners as shown in the figure, and the concrete slab (20) is formed at the mounting holes (3a). It can be fixed to the anchor bolt (27) buried and fixed in the. The shape of the waterproof plate (3) is not limited to a rectangular shape as shown in the figure, but can be implemented in various forms. (3b) is a waterproof groove.

The sheath tube (2) and the socket (1)
As the elastic filler (4) to be filled in between, a material having heat resistance as well as elasticity in addition to elasticity can be preferably used. For example, a foam such as a soft polyurethane resin generally used as a caulking material, a silicone resin or a rubber material used as a sealing material or a packing material, or the like can be used. In addition, since the silicone resin is relatively expensive, a string-shaped foam (not shown) of the soft synthetic resin is inserted around the socket (1) so as to be wound around the socket (1) to fill the foam. By filling and integrating the silicone resin,
It is also possible to save the amount of silicone resin used.

In any case, the elastic filler (4)
May be bonded or non-bonded to the socket (1) and the sheath tube (2), but the bonded state is preferable because it has better stability. The inner flange-shaped end plate (7) is attached and fixed after the elastic filler (4) is filled.

In the connecting device (A) of the above embodiment, the outer surface of the sheath tube (2) and the end member (5) at the upper end of the sheath tube (2) where there is a risk of liquid contact, and if necessary, the waterproof plate (3). The upper surface of) is coated with a resin such as a fluororesin processing. Even if seawater or hot spring water leaked from above the connection device may penetrate and come into contact,
The resin coating layer (9) can prevent deterioration and corrosion of metal, and is particularly preferable.

The construction of the bathtub water circulation pipe using the connection device (A) of the above embodiment will be described.

As shown in FIG. 3, the concrete slab (20)
After placing the mortar layer (21) and the waterproof base, a hole (28) for piping in a part of this concrete slab (20)
The connecting device (A) of the present invention is disposed in the mounting hole (3) formed in the flange-shaped waterproof plate (3) on the outer periphery of the sheath tube (2).
a) is fitted around an anchor bolt (29) which is embedded and fixed in the concrete slab (20) around the pipe hole (28), and is fixed by tightening a nut.
A circulation pipe (12) is connected to the socket (1) inside the connection device (A) through the lower opening (b), and a bathtub water circulation provided at the bottom of the bathtub from the upper opening (a). The mouth (10) is connected via a connection sleeve (11) according to the distance to the bottom of the bathtub.

Thus, the waterproof base mortar layer (21)
A waterproof layer (22) mainly composed of asphalt or the like is laminated so as to fill the waterproof plate (3), and a waterproof protective mortar layer (23), a heat insulating layer (24), and a lightweight concrete layer are further formed thereon. (25) and a base mortar layer (26) are provided, and a finishing material (27) such as a tile is stuck on the surface to perform construction.

In the above construction, the waterproof layer (22) is terminated at the outer peripheral portion of the sheath tube (2) of the connection device (A). 5), the terminal treatment can be easily performed by terminating the outer periphery of the upper part of the sheath tube below the flange (7) or the lower surface of the flange as shown in an enlarged view in FIG. .

For example, in the case where the flange (7) is not provided, if the waterproof layer (22) is terminated at the outer peripheral portion of the sheath tube (2), the terminal of the waterproof layer (22) with respect to the sheath tube (2) can be formed. If the contact state is not perfect, moisture that has penetrated from above due to water leakage may enter between the sheath tube (2) and the waterproof layer (22), and therefore, treatment with a sealant or the like is required. However, as described above, when the flange (7) is provided at the upper end of the sheath tube (2), the waterproof layer (22) can be attached to the flange as described above. (7)
If it is treated so as to terminate below, the water penetrating from above can be prevented from penetrating into the terminal portion of the waterproof layer (22) by the overhanging shape of the flange (7), and the water can be prevented from flowing through the sheath tube (2). It is possible to exhibit a good waterproof effect without invading between the and the waterproof layer (22).

The waterproof layer (22) comes into contact with the sheath tube (2) and the flange-like waterproof plate (3), but since the sheath tube (2) and the waterproof plate (3) are made of metal. In addition, even if it comes into contact with a waterproof layer mainly composed of asphalt, a waterproof agent or the like, there is no possibility of swelling, deformation or breakage. Also, the inner socket (1) is covered by the outer sheath tube (2) and does not come into contact with the waterproof layer (22).

Furthermore, since the space between the inner socket (1) and the outer sheath tube (2) is filled with the elastic filler (4), the socket (1) is fixed as described above. The upper end portion is engaged and connected to the sheath tube (2), so that it is stably held. In addition, the elastic filler (4) can absorb and reduce the vibration and noise of the socket (1) due to the bathtub water flow.
When the elastic filler (4) is made of a material having heat insulating properties, the heat insulating effect can prevent the heat of asphalt from being transmitted to the socket (1) at the time of construction, and the heat of the bathtub water flowing inside can be prevented from flowing outside. Can be prevented from being transmitted to the sheath tube (2).

In the above-described embodiment, the case where the present invention is used to connect a bathtub water circulation pipe has been described. However, the connecting device of the present invention is used not only for connecting a bathtub water circulation pipe but also for general water supply and hot water supply. The present invention can also be suitably used for a pipe connection device such as a pipe, a hot water supply pipe, or the like, which is provided mainly through a waterproof layer. Further, the apparatus of the present invention is not limited to the case where the apparatus is used in the vertical direction, and can be used in the horizontal direction. In that case, the upper side of the above embodiment is used as the upstream side.

[0043]

As described above, the pipe connection device of the present invention can be suitably used for connection of various pipes such as a bathtub water circulation pipe when hot spring water or seawater is used for bathtub water. In addition, even if the outer peripheral portion comes into contact with asphalt, a waterproofing agent, or the like, there is no risk of deterioration or destruction. In addition, particularly in the case where the waterproofing layer is fixed at the portion of the waterproof layer on the concrete slab, the terminal treatment of the waterproof layer terminating at the outer periphery of the sheath tube can be easily performed, and the workability and sealing property can be improved.

Further, in the case of the second aspect of the present invention, the assembly by engagement of the socket and the sheath tube is facilitated to ensure the sealing state of the elastic filler portion.
The elastic filler filled between the socket and the sheath tube can be stably held without fear of pulling out downward.

[Brief description of the drawings]

FIG. 1 is a sectional view of one embodiment of a pipe connection device according to the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a plan view from the lower surface side of the same.

FIG. 4 is a cross-sectional view showing a construction example using the above connection device.

FIG. 5 is an enlarged view of a part of the above.

FIG. 6 is a sectional view showing a conventional construction example.

[Explanation of symbols]

 (A) Connection device (1) Socket (1a) Male screw (2) Sheath tube (3) Waterproof plate (4) Elastic filling material (5) End member (5a) Female screw (6) Sealing material applied part ( 7) Flange (8) Inner flange end plate (9) Resin coating layer (10) Bathtub water circulation opening (11) Connection sleeve (20) Concrete slab (22) Waterproof layer (28) Piping hole (29) Anchor bolt (S) spacing

Claims (3)

(57) [Claims] 1. A connection device for piping for bathtub water circulation, water supply, hot water supply, and the like, comprising a socket formed of a synthetic resin material, to which a connection pipe or a circulation pipe can be connected through openings at both ends, and an outer periphery of the socket. A metal sheath tube engaged with and connected to the socket at one end portion which is fitted at a predetermined interval to at least the upstream side, and which is integrally attached to the outer periphery of the sheath tube and has a required position A metal flange-shaped waterproof plate having a mounting hole formed therein, and an elastic filler filled between the sheath tube and the socket, and a flange protruding outward at one end of the sheath tube is provided. A pipe connection device, which is provided. 2. An end member for shielding between the sheath tube and the socket is provided at one end of the sheath tube, and the end member is engaged and connected to the outer periphery of the socket in a sealed state by screwing means. The pipe connecting device according to claim 1, wherein a flange is formed on an outer periphery of the end member. 3. An end plate in the form of an inner flange for preventing the elastic filler from being pulled out and dropped is provided at the other end of the sheath tube so as to be disengaged from the socket. A piping connection device according to item 1.