JP2004011093A - Eccentric adapter for straight pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an eccentric adaptor for straight pipe with high quality and satisfactory maintainability which satisfies the standard for certifying fine housing parts or the like declared by an organization for evaluating residential performance designated by the quality assurance standard for a residential drain pipe. <P>SOLUTION: This adaptor comprises a body having a circular opening part on the upper surface; a connection part with a building-side drain port or the upper end of a straight pipe, which is integrally provided on the lower part of the body eccentrically from the central axis of the opening part; a rotating part rotatably mounted on the opening part; and a connection part with the lower end of the straight pipe or an equipment-side drain port, which is integrally provided on the rotating plate eccentrically from the central axis thereof. Accordingly, even if the equipment-side drain port is axially shifted from the building-side drain port, this slippage can be absorbed to connect the both through the straight pipe. The bottom surface of the body is inclined downward, and the rotating part is adhered to the opening part of the body after positioning the connection parts. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an eccentric adapter used for connecting both drain ports with a straight pipe when a misalignment occurs between an appliance-side drain port such as a sink and a building-side drain port.
[0002]
[Prior art]
With the enforcement of the “Act on the Promotion of Housing Quality Assurance” (the so-called Quality Assurance Act), according to the criteria for excelling housing parts published by the designated house performance evaluation organization, maintenance and replacement of sinks and wash basins are required. From the viewpoint of ensuring ease of installation, it is specified that the appliance drain pipe should be a straight pipe in principle. That is, according to the standards, the appliance drain pipe is required to have corrosion resistance, chemical resistance, heat resistance, and a smooth inner surface.
[0003]
[Problems to be solved by the invention]
However, when the mouth axis of the appliance side drain port such as a sink is shifted from the axis of the building side drain port, the drain ports cannot be connected by a straight pipe. In such a case, a bellows tube has been conventionally used, but this does not satisfy the above-described criteria, particularly the inner surface smoothness. On the other hand, as shown in FIG. 7, there is also a free-form drain pipe which is divided into upper and lower parts, and this can be applied even when a misalignment occurs between the appliance-side drain port and the building-side drain port. However, special molding is required, and the cost is high.
[0004]
The present invention solves such a problem, and an object of the present invention is to provide an eccentric adapter used when a straight pipe is used as an instrument drain pipe.
[0005]
[Means for Solving the Problems]
In order to achieve the above-described object, in the present invention, a connection portion with a building-side drain port or a straight pipe upper end is provided eccentrically from a central axis at a lower portion of a main body having a water passage space therein, and the central axis is provided at an upper portion. A means for rotatably providing a connection part with a lower end of a straight pipe or an appliance-side drain port as a rotation axis was used. More specifically, a main body having a water passage space therein and a circular opening on the upper surface, and a building-side drain port provided eccentrically from the center axis of the opening and integrally provided at a lower portion of the main body or A connecting portion with the upper end of the straight pipe, a rotating portion rotatably attached to the opening, and a connecting portion with the lower end of the straight pipe or an appliance-side drain port provided integrally with the rotary plate eccentrically from its central axis. (See Claim 2).
[0006]
Further, in the second aspect, means for tilting the bottom surface of the main body downward is used.
[0007]
Further, in the third aspect, a means is used in which after the positioning of the connecting portion, the rotating portion is fixed to the opening of the main body by bonding.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an exploded perspective view of the adapter of the present invention. In the figure, 1 is a main body having a circular opening 1a on the upper surface, 2 is a cylindrical lower end connecting portion provided integrally with a lower portion of the main body 1, and 3 is a disc-shaped attached to the opening 1a of the main body 1. Rotating portions 4 are cylindrical upper end connecting portions provided integrally with the rotating portion 3.
[0009]
The structure of each member will be described in more detail with reference to FIG. The main body 1 has a hopper-shaped body portion 1b formed eccentrically from the center axis of the opening 1a, and a lower end connecting portion 2 is attached to a discharge portion 1c. In the case of this embodiment, the lower end connection part 2 is constituted by a cap nut formed with a female screw 2a. On the other hand, the rotating portion 3 has a rib 3 a rotatably fitted into the opening 1 a of the main body 1. Further, a through hole 3b eccentric from the center axis is provided vertically penetrating therethrough, and the upper end connecting portion 4 is integrally formed by projecting upward so as to be coaxial with the through hole 3b. 3c is an O-ring. The upper end connection portion 4 is provided with a male screw 4a.
[0010]
FIG. 3 shows a construction example of the present adapter. In the figure, 5 is a sink of a sink, 6 is a drain trap, and 7 is an instrument drain pipe. The appliance drain pipe 7 is a straight pipe. Reference numeral 8 denotes a building-side drain pipe provided under the floor, and a riser 8a of the riser 8a is offset in axis from the appliance drain pipe 7. Reference numeral 9 denotes a floor, and when the connection between the riser pipe 8a and the instrument drainage pipe 7 is completed via the adapter, the working port 9a is closed by the cover plate 10.
[0011]
That is, in this adapter, the opening 1a of the main body 1 can be positioned within a range of 360 degrees around the central axis of the discharge port 1c as a rotation axis in the connection work between the lower end connecting portion 2 and the riser pipe 8a (the virtual line in FIG. 4). In addition, the upper end connecting portion 4 can be positioned within a range of 360 degrees with the central axis of the positioned opening 1a as a rotation axis (see the imaginary line in FIG. 5). Therefore, according to the present adapter, it is possible to absorb the misalignment between the riser pipe 8a and the appliance drainage pipe 7 in a range in which the rotation range of the opening 1a and the rotation range of the upper end connection part 4 are combined.
[0012]
Then, when the positioning of the opening 1a and the upper end connection part 4 is completed in the above manner, the lower end side nut 7a of the appliance drainage pipe 7 is attached to the male screw 4a of the upper end connection part 4. Needless to say, the lower end connecting portion 2 is screwed to the rising pipe 8a when the opening 1a is positioned. Finally, when the connection operation by the present adapter is completed, the rotating section 3 and the opening 1a of the main body 1 are fixed with an adhesive. This is to prevent a subsequent connection failure from occurring due to careless rotation.
[0013]
Next, the function of this adapter after construction will be described. Not only can a straight pipe be used as the instrument drainage pipe 7, but the adapter itself is molded from a material having inner surface smoothness and corrosion resistance. Excellent in quality. Also, since the adapter can be easily removed, maintenance or replacement of parts is also easy. Further, molding is easy, which is advantageous in cost. Furthermore, since the main body 1 forms the hopper-shaped body 1b, the flow path resistance is small. Here, it is preferable that the main body 1 is set to have a short vertical width (height) so that foreign matter is not retained. However, if the length is set too short, the flow path resistance increases and there is a possibility of backflow.
[0014]
In the above embodiment, the hopper-type main body 1 is employed, but the shape of the main body 1 is not limited to this, and may be a cube, a rectangular parallelepiped, a spherical body, or another three-dimensional shape. Further, the shape of the rotating portion 3 is not limited to a flat plate shape as in the above embodiment, but may be a three-dimensional shape. That is, as shown in FIG. 6, both the main body 1 and the rotating portion 3 can be made hemispherical. What is necessary in the present invention is to have a water passage space therein, to provide a lower end connection part eccentrically from the central axis, and to rotatably provide an upper end connection part eccentrically provided from the central axis. Further, in the above-described embodiment, the opening 1a is provided on the upper surface of the main body 1 and the rotating portion 3 is provided therein. However, the lower portion of the main body 1 is opened, and the rotating portion formed integrally with the lower end connecting portion is fitted therein. It may be. In this case, a configuration is adopted in which the rotating unit is tightly fitted so as not to drop by its own weight. However, it is needless to say that the rotation of the rotating part is allowed.
[0015]
【The invention's effect】
As described above, according to the present invention, even if there is a misalignment between the appliance-side drain and the building-side drain, the drains can be connected by straight pipes. Satisfies the quality standards of Also, the workability is good because the nut can be attached by tightening. Furthermore, since it has a relatively simple configuration, molding is easy by applying conventional plastic molding, which is advantageous in terms of cost.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of the present adapter. FIG. 2 is a longitudinal sectional view of the present adapter. FIG. 3 is an explanatory view showing a working example of the present adapter. FIG. 4 is an explanatory view showing a rotation locus of an opening. 5 is an explanatory view showing the rotation locus of the upper end connecting portion. FIG. 6 is an explanatory view showing another embodiment of the present invention. FIG. 7 is an explanatory view showing a conventional free-form drain pipe.
DESCRIPTION OF SYMBOLS 1 Main body 1a Opening part 2 Lower end connection part 3 Rotation part 4 Upper end connection part

Claims (4)

At the lower part of the main body having a water passage space therein, a connection portion with the building side drain port or the upper end of the straight pipe is provided eccentrically from the central axis, and the lower end of the straight pipe or the appliance side with the central axis as a rotation axis at the upper part of the main body. An eccentric adapter for a straight pipe, wherein a connection part with a drain port is provided rotatably. Connection between a main body having a water passage space therein and a circular opening on the upper surface, and a building-side drain port or a straight pipe upper end eccentrically provided from the center axis of the opening and provided integrally at a lower portion of the main body. Part, a rotating part rotatably attached to the opening, and a connecting part with the lower end of the straight pipe or the appliance-side drain port provided integrally with the rotating plate eccentrically from the center axis thereof. Eccentric adapter for straight pipes. 3. The eccentric adapter for a straight pipe according to claim 2, wherein the main body has a bottom surface inclined downward. 4. The eccentric adapter for a straight pipe according to claim 2, wherein after the positioning of the connecting portion, the rotating portion is fixed to the opening of the main body by bonding.

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