JPH04285219A - Hot water drain structure for bathtub - Google Patents

Abstract

PURPOSE:To improve the quality of piping construction by forming a piping fitting, disposed on the underfloor ground, of a cylinder part for inserting a discharge pipe, and a bearing part of semi-circular cross section with an omitted part formed at the connecting fitting part of a drain pipe. CONSTITUTION:The hot water drain pipe 5 of a bathtub 2 and a drain fitting 11 disposed on the underfloor ground A are connected to each other through a connecting fitting 13 to form hot water drain structure. A joint part 4 is integrally formed at the hot water drain pipe 5 through a vertical part 24 and a bent part 25 so as to connect the hot water drain pipe 5 to a discharge pipe 6 through the connecting fitting 13 for outdoor drainage. The piping fitting 11 is formed of a cylinder part 9 into which the discharge pipe 6 can be inserted and a bearing part 10 of semi-circular cross section with an omitted part formed therein, and the adhesion of gravel, dirt, and the like generated around at the time of connecting the hot water drain pipe 5 to the discharge pipe 6 is prevented by the receiving part 10. The hot water drain pipe 5 and the discharge pipe 6 can be thereby connected to each other positively with desirable piping quality.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water drain structure for a bathtub that can reliably connect a hot water drain pipe connected to a hot water outlet of a bathtub and a discharge pipe extending outdoors with good quality.

0002

[Prior Art and Problems to be Solved by the Invention] Hot water from a bathtub has conventionally been drained from a hot water drain pipe b connected to a hot water outlet of a bathtub a and extending along the subfloor surface, as illustrated in FIG. This was done via a drain pipe f which was connected to a drain pipe d extending outdoors beyond the cloth foundation c by fixing a connecting fitting e using adhesive, for example.

[0003] Furthermore, since such a drain pipe f is usually buried in the ground beneath the floor, the connection between the drain pipe b and the discharge pipe d is constructed below the level g of the ground under the floor. tube b
, sand, etc. in the adhesive application area at the connection part of the discharge pipe d.
Debris such as gravel tends to adhere to the application area, and this dirt prevents a high-quality connection, causing waste water to leak from the connection, making it less reliable, and sand and other substances getting into the hot water and discharge pipes, making it difficult to drain the water. There are issues that need to be resolved, such as blocking the flow of hot water.

[0004] The present invention is based on the idea that a pipe holder is disposed on the subfloor surface, in which a cylindrical part surrounding the discharge pipe and extending outdoors is integrally provided with a receiving part for exposing the joint part of the discharge pipe. The purpose of the present invention is to provide a hot water drainage structure for a bathtub that can prevent dust from adhering to the connection part between a hot water pipe and a discharge pipe, can perform piping construction with high quality, and can ensure the connection.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the hot water drain structure for a bathtub according to the present invention includes a hot water drain pipe connected to a hot water drain port of a bathtub and having a joint portion extending along the subfloor surface;
A drain pipe connected to the joint part using a connecting fitting and extending outdoors is placed on a subfloor surface on which a drain pipe is arranged, and a cylindrical part that surrounds the discharge pipe and extends outdoors includes the connecting fitting and the joint part A pipe receiving fitting is provided which is integrally provided with a receiving part having a semicircular cross section and having a notch extending in the longitudinal direction to expose the pipe.

[0006]

[Function] The joint of the hot water drain pipe that is connected to the hot water outlet of the bathtub and extends along the subfloor surface is connected to the discharge pipe that extends outdoors using a connecting fitting. A pipe receiving fitting is provided which integrally includes a cylindrical part extending outdoors and a receiving part which exposes the joint part of the discharge pipe and receives the joint part. Therefore, since the joint part is connected to the discharge pipe at the receiving part of the pipe holder, the connecting part can be protected from surrounding sand, gravel, etc. by the receiving part, and by preventing dust from adhering to the connecting part, A hot water discharge pipe and a discharge pipe can be reliably connected with good quality.

[0007] Furthermore, since the discharge pipe is surrounded by the cylindrical part of the piping holder that has been installed in advance, the exhaust pipe can be guided by the piping holder and introduced accurately and smoothly, making it easier to carry out piping work. It is possible to improve the performance and mounting accuracy.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 and 2, the hot water drainage structure of the bathtub of the present invention includes a hot water drain pipe 5 connected to the hot water drain port 3 of the bathtub 2 and having a joint part 4 extending along the subfloor surface A; Further, on the subfloor surface A where a drain pipe 7 having a discharge pipe 6 extending to the outdoors B is disposed, a receiving part 10 for receiving the joint part 4 is integrally attached to a cylindrical part 9 surrounding the discharge pipe 6 and extending to the outdoors B. A pipe receiving fitting 11 is provided.

The bathtub 2 is a well-known box with an upper opening, and is placed on the subfloor surface A via a footrest 20. Before the bathtub 2 is installed, a hot water outlet is opened in the floorboard 21. 3
For example, the drain pipe 5 extending downward using a nut fitting 22
are connected in advance.

[0010] The drain pipe 5 has an elongated joint part 4 integrally at the lower end of the vertical part 24 whose upper end is connected to the water discharge port 3 through a bent part 25. When the bathtub 2 is installed, it is set at a height that is approximately level with the level C of the subfloor surface A. Note that the joint portion 4 is gently sloped toward the outdoors B to guide the waste water to the outdoors B.

[0011] Furthermore, the discharge pipe 6 connected to the joint part 4 is
An outer wall W forming one wall of the bathroom R in which the bathtub 2 is arranged.
It penetrates the through hole 30 drilled in the upright part F1 of the cloth foundation F that supports the lower end of the pipe and extends at a gentle slope to the drainage tank (not shown) in outdoor B. It will later be buried underground. The discharge pipe 6 is inserted into a cylindrical portion 9 of a pipe receiving fitting 11 arranged in advance.

As shown in detail in FIG. 4, the pipe receiving fitting 11 includes an elongated cylindrical cylindrical portion 9 having an inner diameter through which the discharge pipe 6 can be inserted, and is provided integrally with the cylindrical portion 9. It also has a receiving part 10 having a semicircular cross section and having a missing part 12 extending in the longitudinal direction. The receiving portion 10 is arranged with its recess 10A facing upward, and the joint portion 4 of the drain pipe 5 is placed in the recess 10.
A, and the upper half of the joint 4 is exposed over its entire length at the cutout 12. Further, in the receiving part 10, a short cylindrical connecting fitting 13 that surrounds and connects the joint part 4 and the discharge pipe 6 is also exposed in the missing part 12. Note that the recessed portion 10A is provided at the indoor end of the receiving portion 10.
A semicircular plate member 23 is provided for closing. The plate material 2
3 prevents sand etc. from entering into the recess 10A of the receiving part 10 from the indoor side when the pipe receiving fitting 11 is installed on the subfloor surface A.

[0013] However, the piping holder 11 is as shown in Figs.
As shown in FIG.
, and the concave portion 10A of the receiving portion 10 faces upward before the discharge pipe 6, and the through hole 30 of the rising portion F1 of the cloth foundation F.
The cylindrical portion 9 is penetrated through the cylindrical portion 9. The pipe receiving fitting 11 is disposed with its lower half positioned below the level C of the subfloor surface A, and is gently inclined toward the outdoors B. Thereafter, the discharge pipe 6 is inserted into the cylindrical part 9 and its inner end is terminated on the receiving part 10. Furthermore, as shown by the dashed line in FIG.
The bent portion 25 of the receiving portion 10 is placed close to the plate 23 at the end of the receiving portion 10 on the subfloor surface A via the footrest 20.

Furthermore, as shown in FIG. The cylindrical portion 9 of the piping holder 11 is connected by fixing the connecting fitting 13 using an adhesive or the like with the upper half exposed and the lower half placed in the recess 12, and the cylindrical portion 9 of the pipe receiving fitting 11 is exposed to the outdoors B. The discharge pipe 6 is buried underground to form a drain pipe 7.

[0015] Since the joint part 4 and the discharge pipe 6 are connected on the receiving part 10 of the pipe receiving fitting 11 in this way, surrounding dirt such as sand and gravel is prevented from adhering to the adhesive-applied part, and the connection is prevented. Metal fittings 1
3 can be firmly fixed, eliminating water leakage from the connection parts and enabling high-quality and reliable connections.

Furthermore, since the hot water discharge pipe 5 and the discharge pipe 6 are introduced and connected to the piping holder 11 arranged in advance, the positioning of the hot water discharge pipe 5 and the discharge pipe 6 is facilitated, and piping work is facilitated. Workability can be improved.

[0017]

[Effects of the Invention] As mentioned above, the bathtub drainage structure of the present invention has the following features:
The drain pipe is formed by connecting the discharge pipe to the joint of the drain pipe at the pre-arranged pipe receiving part of the pipe fitting, so sand, gravel, etc. can be prevented from adhering during the connection work, resulting in high quality. Reliable piping construction can be achieved. Moreover, the discharge pipe can be introduced while being guided by the cylindrical part of the pipe receiving fitting, and the efficiency of its construction can be improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the hot water drainage structure of a bathtub according to the present invention.

FIG. 2 is a sectional view showing an embodiment of the present invention.

FIG. 3 is a partially cutaway front view showing the state of connection between the joint part of the discharge pipe and the discharge pipe.

FIG. 4 is a perspective view illustrating a pipe holder.

FIG. 5 is a sectional view illustrating a prior art.

[Explanation of symbols]

2 Bathtub 3　Drainage port 4 Joint part 5　Hot water drain pipe 6 Discharge pipe 7 Drain pipe 9 Cylinder part 10 Receiving part 11 Piping bracket 12 Missing part 13 Connection fittings A　Subfloor surface B Outdoors

Claims (1)

[Claims] Claim 1: A drain pipe having a joint part that is connected to a water outlet of a bathtub and extends along the subfloor surface, and a discharge pipe that is connected to the joint part using a connecting fitting and extends outdoors. A cylindrical part that surrounds the discharge pipe and extends outdoors is integrally provided with a receiving part having a semicircular cross section that includes the connecting fitting and has a missing part extending in the longitudinal direction to expose the joint part, on the subfloor surface where the discharge pipe is disposed. A bathtub drainage structure consisting of pipe fittings.